Log in

Relevant bibliographies by topics / Bc meson, B physics / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Bc meson, B physics.

Dissertations / Theses on the topic 'Bc meson, B physics'

Author: Grafiati

Published: 9 March 2023

Last updated: 31 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic 'Bc meson, B physics.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

FIORENDI, SARA. "Measurement of the ratio B(Bc± → J/ψπ±π±π∓ )/B(Bc± → J/ψπ± ) and the production cross sections times branching fractions of Bc± → J/ψπ± and B± → J/ψK± in CMS". Doctoral thesis, Università degli Studi di Milano-Bicocca, 2014. http://hdl.handle.net/10281/55490.

Full text

Abstract:

Il mesone pseudoscalare Bc, stato fondamentale del sistema ( ̄bc), è la particella più leggera formata da due quark pesanti di diverso sapore, e rappresenta perciò un laboratorio ideale per lo studio della dinamica dei decadimenti degli Heavy Flavor. Lo studio delle proprietà del mesone Bc è di particolare interesse se paragonato agli stati ̄bb e ̄cc, che non portano sapore, e offre un nuovo terreno per verificare le predizioni dei modelli effettivi ispirati dalla cromodinamica quantistica. Ciascuno dei due quark costituenti la Bc può decadere attraverso l’interazione debole. In part

APA, Harvard, Vancouver, ISO, and other styles

2

TARONI, SILVIA. "Performance of the cms forward pixel detector and analysis of the Bc to J/psi pi decay channel." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2009. http://hdl.handle.net/10281/7780.

Full text

Abstract:

The performance of the irradiate CMS forward pixel detector are discussed in the first part of the thesis. The analysed data are collected in a testbeam of a detector module irradiated up to 45 Mrad. The high absorbed dose has not compromised the detector response. In the second part, the feasibility of the analysis of the B_c decaying into J/psi + pion at CMS is expounded. The results are obtained for 1fb-1 and 200pb-1 of integrated luminosity.

APA, Harvard, Vancouver, ISO, and other styles

3

Lyon, James David. "Rare semi-leptonic B meson decays." Thesis, University of Edinburgh, 2014. http://hdl.handle.net/1842/8904.

Full text

Abstract:

In this thesis, novel corrections to B → X˦ and B → Xl+l- decays, where X is a pseudoscalar or vector meson, are presented. These are the chromomagnetic matrix element, weak annihilation in a general four-quark operator basis and a long-distance charm loop contribution. The calculation of the chromomagnetic matrix element completes the calculation of matrix elements for all relevant effective weak operators in B → V decays, removing an infrared divergence which previous computations had treated in a very approximate way. It also encounters an interesting technical obstacle not previously seen

APA, Harvard, Vancouver, ISO, and other styles

4

Zhang, Hongshan (Kevin). "First measurements of the exclusive decays of the upsilon(5S) to B* meson B* bar meson pion pion final states and improved B*(s) meson mass measurements." Related electronic resource: Current Research at SU : database of SU dissertations, recent titles available full text, 2006. http://proquest.umi.com/login?COPT=REJTPTU0NWQmSU5UPTAmVkVSPTI=&clientId=3739.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Rieger, Jason. "First measurement of the neutral B(S) meson semileptonic branching ratio to an orbitally excited D meson state (neutral B(S) meson decaying to D meson(2536)-muon(+)-neutrino-X meson)." [Bloomington, Ind.] : Indiana University, 2008. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3331275.

Full text

Abstract:

Thesis (Ph.D.)--Indiana University, Dept. of Physics, 2007.<br>Title from PDF t.p. (viewed on Jul 27, 2009). Source: Dissertation Abstracts International, Volume: 69-11, Section: B, page: 6877. Adviser: Rick Van Kooten.

APA, Harvard, Vancouver, ISO, and other styles

6

Anikeev, Konstantin. "Measurement of the lifetimes of B meson mass eigenstates." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/32421.

Full text

Abstract:

Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 2004.<br>Includes bibliographical references (p. 201-209).<br>In this dissertation, we present the results of the average lifetime measurements in ..., ..., and ... decays, as well as the results of a time-dependent angular analysis of ... and ... decays. The time-dependent angular analysis of ... allows the extraction of separate lifetimes for the mass eigenstates, ... and ..., in the ... system. The two lifetimes are combined to extract the width difference, ..., between the two eigenstates. This quantity is extremely

APA, Harvard, Vancouver, ISO, and other styles

7

Capdevila, Soler Bernat. "Searching for new physics in semileptonic B meson decays." Doctoral thesis, Universitat Autònoma de Barcelona, 2020. http://hdl.handle.net/10803/669491.

Full text

Abstract:

Al llarg dels últims anys, s'han observat nombroses senyals que suggereixen l'existència de Física més enllà del Model Estàndard en desintegracions semi-leptòniques de mesons B, mediades per transicions del tipus b --> sll. Més concretament, l'experiment LHCb, juntament amb altres experiments al LHC i col·laboracions externes com Belle, han trobat desviacions en les mesures experimentals de diferents observables d'important rellevància respecte les seves prediccions teòriques en el Model Estàndard. Parcialment, aquesta situació no es sorprenent, ja que en un conjunt gran de dades un sempre esp

APA, Harvard, Vancouver, ISO, and other styles

8

Gratrex, James. "Rare radiative and semileptonic B meson decays." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/33173.

Full text

Abstract:

Recent results at the LHCb and B-factory experiments have suggested that rare processes in B →Vγ and B → V ℓ¯ℓ decays, where V is a vector meson, show some deviation from Standard Model predictions. Although these anomalies are not yet at the level to constitute a formal discovery, they are certainly suggestive of potential New Physics effects in flavour-changing neutral currents. However, explanations within the Standard Model cannot yet be ruled out. This thesis contributes to the understanding of such anomalies in two ways. Firstly, the angular distribution of the B → KJ (→ Kπ)ℓ1¯ℓ2 decay i

APA, Harvard, Vancouver, ISO, and other styles

9

Wallace, Charlotte. "Studies of excited D mesons in B meson decays." Thesis, University of Warwick, 2016. http://wrap.warwick.ac.uk/85415/.

Full text

Abstract:

This thesis documents the studies of several three-body B+ meson decays, each with a charged charmed meson in the final state. All analyses presented use a data sample recorded by the LHCb detector in 2011 and 2012, corresponding to an integrated luminosity of 3:0 fb‾1 of pp collision data. The B+ →D‾ K+π + and B+ →D+ K+π.+ decay modes are observed for the first time. The branching fraction of the favoured B+ → D‾ K+π + decay mode is measured relative to the topologically similar B+ →D‾ π+ π+ decay and the B+ ‾ D‾ K+π+ final state is used as a normalisation channel for the suppressed B+ → D+ K

APA, Harvard, Vancouver, ISO, and other styles

10

Corwin, Luke Andrew. "Leptonic Decays of the Charged B Meson." The Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=osu1228320450.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Yasin, Zafar. "Search for the decay of a charged B meson to a charged rho meson and a f₀(980) meson." Diss., UC access only, 2009. http://proquest.umi.com/pqdweb?index=138&did=1907183711&SrchMode=1&sid=1&Fmt=7&retrieveGroup=0&VType=PQD&VInst=PROD&RQT=309&VName=PQD&TS=1270493424&clientId=48051.

Full text

Abstract:

Thesis (Ph. D.)--University of California, Riverside, 2009.<br>Includes abstract. Includes bibliographical references (leaves 104-105). Issued in print and online. Available via ProQuest Digital Dissertations.

APA, Harvard, Vancouver, ISO, and other styles

12

Saab, Tarek. "Study of charmonium final states in B meson decays." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape11/PQDD_0003/MQ44266.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Rasheed, Reem. "Search for new physics using radiative B meson decays and lifetime measurment of the B meson with the Belle II experiment." Thesis, Strasbourg, 2020. https://publication-theses.unistra.fr/public/theses_doctorat/2020/RASHEED_reem_2020_ED182.pdf.

Full text

Abstract:

Juste après le Big Bang, matière et antimatière étaient présentes en quantités égales. Mais l’univers que nous observons aujourd’hui est presque entièrement constitué de matière. Une différence de comportement des particules et anti-particules constitue un ingrédient fondamental pour expliquer cette disparition. La violation de la symétrie quantique CP (Charge et Parité) introduit une telle asymétrie, cependant le niveau observé actuellement pour cette violation ne suffit quantitativement pas. L’expérience Belle II vient de démarrer au Japon, elle permet d’étudier avec une très grande précisio

APA, Harvard, Vancouver, ISO, and other styles

14

Eriksson, David. "Phenomenology of Charged Higgs Bosons and B-meson Decays." Doctoral thesis, Uppsala universitet, Kärn- och partikelfysik, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-9564.

Full text

Abstract:

For more than 30 years the Standard Model has been the theoretical foundation for particle physics. The theory has been veriﬁed successfully by experimental tests. Its biggest shortcoming is the non-discovery of the Higgs boson,responsible for giving the other particles masses. Despite its success there are hints that the Standard Model is not the complete theory and many extensions of it, such as supersymmetry, have been proposed. Extended theories often predict the existence of a charged Higgs boson and its detection will be a clear sign of physics beyond the Standard Model. The main focus i

APA, Harvard, Vancouver, ISO, and other styles

15

Welty-Rieger, Leah. "The lifetime of a beautiful and charming meson B(c) meson lifetime measured using the D0 detector /." [Bloomington, Ind.] : Indiana University, 2008. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3337257.

Full text

Abstract:

Thesis (Ph.D.)--Indiana University, Dept. of Physics, 2008.<br>Title from PDF t.p. (viewed on Jul 28, 2009). Source: Dissertation Abstracts International, Volume: 69-12, Section: B, page: 7581. Adviser: Rick Van Kooten.

APA, Harvard, Vancouver, ISO, and other styles

16

Morda, Alessandro. "Rare dileptonic B meson decays at LHCb." Thesis, Aix-Marseille, 2015. http://www.theses.fr/2015AIXM4042/document.

Full text

Abstract:

Les désintégrations rares B0(s)→ll sont générées par des courants neutres avec changement de la saveur. Pour cette raison, ainsi qu'à cause de la suppression d'hélicité, leurs taux de désintégration sont très petits dans le Modèle Standard (MS), mais la présence de particules virtuelles de Nouvelle Physique peut radicalement modifier cette prédiction. Une partie du travail original présenté dans cette thèse est dédié à l'optimisation de l'algorithme d'Analyse Multi Varié (MVA) pour la recherche de la désintégration B0(s)→μμ avec l'échantillon collecté par l'expérience LHCb. Cet échantillon a é

APA, Harvard, Vancouver, ISO, and other styles

17

Damet, Jerome. "Physics and Detector Simulation Studies of B-Meson Decays in ATLAS." Doctoral thesis, Uppsala University, Department of Nuclear and Particle Physics, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-1284.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Damet, Jérôme. "Physics and detector simulation studies of B-meson decays in ATLAS /." Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2001. http://publications.uu.se/theses/91-554-4942-5/.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Bertholet, Émilie. "Search for new physics in charmless three-body B-meson decays." Thesis, Sorbonne université, 2019. http://www.theses.fr/2019SORUS178.

Full text

Abstract:

Cette thèse traite de différents aspects de l'analyse des désintégrations de mésons B en trois particules non charmées. Une étude d'une méthode d'extraction de la phase faible gamma de la matrice CKM utilisant cinq modes de désintégration sous l'hypothèse de symétrie SU(3) de saveur est effectuée. Le résultat est obtenu en utilisant les résultats d'analyses de BABAR et inclut une propagation complète des incertitudes. Six solutions sont obtenues avec une incertitude inférieure à 11 degrés. Il est aussi montré que l'effet de la brisure de SU(3) sur l'analyse, moyenné sur le plan de Dalitz, est

APA, Harvard, Vancouver, ISO, and other styles

20

Maksimović, Petar 1968. "Observation of [pi]-B meson charge-flavor correlations and measurement of time dependent B⁰⁰ mixing in pp collisions." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/47407.

Full text

Abstract:

Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1998.<br>On t.p. "[pi]" appears as the lower case Greek letter, and the second "B" and "p" are each surmounted by a stroke.<br>Includes bibliographical references (p. 238-243).<br>by Petar Maksimović.<br>Ph.D.

APA, Harvard, Vancouver, ISO, and other styles

21

King, James Edward. "A study of charm meson production in semileptonic B decays at LEP." Thesis, Queen Mary, University of London, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.339003.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Bellerive, Alain. "Investigation of semileptonic B meson decays to p-wave charm mesons." Thesis, McGill University, 1997. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=34913.

Full text

Abstract:

This thesis presents an investigation of semileptonic B meson decays with a narrow P-wave charm meson in the final state. The data sample consists of 3.29 x 106 BB¯ events collected with the CLEO II detector at the Cornell Electron-positron Storage Ring. The P-wave charm mesons are reconstructed in the chain of decays: D0J→D*+p- ,D*+→D0p+,D 0→K-p+ or D0→K-p+p 0 . Study of the decay B-→D*+p0&ell; -n&ell;&d1; reveals useful information about the deficit observed in inclusive charm semileptonic B decays and the effective couplings of the W boson to heavy quark mesons

APA, Harvard, Vancouver, ISO, and other styles

23

Kanik, Inanc. "Light Cone Qcd Sum Rules And Meson Physics." Phd thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/2/12610082/index.pdf.

Full text

Abstract:

In this thesis, we applied Light Cone QCD sum rules (LCSR) to several problems in meson physics. Semileptonic B-&gt<br>eta l v decays are important to get information on Cabibbo-Kobayashi-Maskawa (CKM) matrix elements. We calculated form factors of this decay in LCSR frame. Our results are confirmed by later studies and these similar studies had been used for enhancing result on b to u quark transition matrix element of CKM matrix by BaBar collaboration. We used LCSR method also for calculating coupling constant of radiative rho -&gt<br>eta photon decay since the analysis of the vector particl

APA, Harvard, Vancouver, ISO, and other styles

24

Cakmak, Kerim Mehmet. "Model Independent Analysis Of Rare Exlusive B-meson Decays." Phd thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/12604763/index.pdf.

Full text

Abstract:

Using the general, model indepenent form of the effective Hamiltonian, the general expressions of the longitudinal, normal and transversal polarization asymmetries for l+ and l- for the effective B -&gt<br>K(K*)l+l- decays has been calculated. Existence of regions of Wilson coefficients for which the branching ratio coincides with the Standard Model result, while the lepton polarizations differ from the standard model prediction is expected. Hence, studying lepton polarizations in these regions of Wilson coefficients may be helpful in establishing new physics beyond standard model.

APA, Harvard, Vancouver, ISO, and other styles

25

Krop, Dan. "A search for neutral B meson oscillations at the Tevatron collider experiment DO." [Bloomington, Ind.] : Indiana University, 2007. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3264318.

Full text

Abstract:

Thesis (Ph.D.)--Indiana University, Dept. of Physics, 2007.<br>Source: Dissertation Abstracts International, Volume: 68-05, Section: B, page: 3121. Adviser: Rick Van Kooten. "Title from dissertation home page (viewed Jan. 24, 2008)."

APA, Harvard, Vancouver, ISO, and other styles

26

Gerardin, Antoine. "Heavy-light meson properties from latice QCD." Thesis, Paris 11, 2014. http://www.theses.fr/2014PA112185/document.

Full text

Abstract:

Les mésons lourd-légers jouent un rôle majeur dans la recherche de nouvelle physique au delà du modèle standard. En particulier, les propriétés du méson B sont utilisées pour contraindre la matrice Cabibbo-Kobayashi-Maskawa (CKM) qui décrit les changements de saveur d’un quark lors d’une interaction faible.Les interactions entre quarks et gluons sont décrites par la théorie de l'interaction forte (QCD). Cette dernière prédit, qu'à faible énergie, le couplage de la théorie croît rendant tout traitement perturbatif impossible. La QCD sur réseau est une régularisation non-perturbative de la QCD a

APA, Harvard, Vancouver, ISO, and other styles

27

Williams, Kimberly Marie. "Search the decay of the B meson to two leptons at the Belle Experiment." Diss., Virginia Tech, 2016. http://hdl.handle.net/10919/73753.

Full text

Abstract:

The set of decays known as B⁰ → l⁺l⁻ are exceedingly rare. This thesis details procedures developed to optimize signal extraction and improve the upper limit on the measured branching fraction. When applied to 85 million BB events collected at the Belle experiment in Tsukuba, Japan, the resulting upper limits on branching fractions were 8.8×10⁻⁸ for B⁰ → e⁺e⁻, 1.0×10⁻⁷ for B⁰ → μ⁺μ⁻, and 8.5×10⁻⁸ for B⁰ → e±μ∓" at the 90% confidence level.<br>Ph. D.

APA, Harvard, Vancouver, ISO, and other styles

28

Chai, Xuedong. "Exclusive B decays into final states with two charmed baryons." Diss., University of Iowa, 2007. http://ir.uiowa.edu/etd/126.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Shears, Tara Georgina. "A measurement of the B'+ and B'0 meson lifetimes and lifetime ratio using the OPAL detector at LEP." Thesis, University of Cambridge, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.390212.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Janicek, René. "Search for charmed meson-pion continuum production in semileptonic B decays at CLEO II." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/NQ64583.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Grant, Fraser Cameron. "A study of B'0â†S meson production in Z'0 decays at LEP." Thesis, University of Cambridge, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.360596.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Sigamani, Michael. "Determination of |Vub| using the lepton energy spectrum in events tagged with a fully reconstructed B meson." Thesis, Queen Mary, University of London, 2009. http://qmro.qmul.ac.uk/xmlui/handle/123456789/585.

Full text

Abstract:

We present measurements of partial branching fractions for the inclusive semileptonic decay of B ! Xu` (` = e or ) leading to the determination of the CKM matrix element jVubj. This analysis is based on a sample of 460 million BB events recorded at the (4S) resonance at the BABAR detector. We select B ! Xu` events using the energy spectrum of the lepton (E`) in an event where one of the B-mesons is fully reconstructed. We measure partial branching fractions in restricted regions of the E` spectrum, which are translated into values of jVubj using four theoretical approaches. We calculate the ar

APA, Harvard, Vancouver, ISO, and other styles

33

Goldenzweig, Pablo D. "A Study of Neutral B Meson Decays to ωK^*0 at Belle". University of Cincinnati / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1227110694.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

Nolte, Detlef Reinhard. "Topics in high energy physics : from supersymmetric gauge field theories to rare B meson decays /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC IP addresses, 2000. http://wwwlib.umi.com/cr/ucsd/fullcit?p9974117.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Bird, Thomas. "Flavour studies with LHCb : b-meson mixing, lepton-flavour violation and the velo upgrade." Thesis, University of Manchester, 2016. https://www.research.manchester.ac.uk/portal/en/theses/flavour-studies-with-lhcb-bmeson-mixing-leptonflavour-violation-and-the-velo-upgrade(7a8a7cf6-4885-4bc3-80b7-8208d606cf9f).html.

Full text

Abstract:

Semileptonic B decays of the type Bq⁰→Dq⁻μ⁺ν (where Dq⁻→K⁻K⁺pie⁻) are selected and their lifetimes are corrected using a statistical simulation-based correction called the k-factor. Using 1 fb⁻¹ of LHCb data the B⁰ and Bs⁰ mixing frequencies are measured to be Deltamd = ( 0.503 ± 0.011 (stat) ± 0.013 (syst) ) ps⁻¹ and Deltams = ( 17.93 ± 0.22 (stat) ± 0.15 (syst) ) ps⁻¹. We exclude the null hypothesis of no mixing for the B⁰ and Bs⁰ by 5.8 and 13.0 standard deviations respectively. This is the first observation of Bs Bsbar mixing using only semileptonic B decays. The lepton flavour violating d

APA, Harvard, Vancouver, ISO, and other styles

36

Webber, Adam Dane. "Radiation damage studies in the LHCb VELO detector and measurement of the flavour-specific asymmetry in semileptonic B-decays." Thesis, University of Manchester, 2013. https://www.research.manchester.ac.uk/portal/en/theses/radiation-damage-studies-in-the-lhcb-velo-detector-and-measurement-of-the-flavourspecific-asymmetry-in-semileptonic-bdecays(6a41db51-8d4e-4b43-914b-80a1c73d5271).html.

Full text

Abstract:

This thesis presents several studies of data collected at the LHCb detector during its first two years of operation. A detector upgrade study is first presented, using simulated events at an increased luminosity. A second study involves radiation damage to the silicon sensors of the LHCb Vertex Locator. During 2010 and 2011the silicon sensors were exposed to a range of fluences, with sensors in the mostactive regions exposed to fluences of up to approximately 45x10^12 1MeV neutron equivalent (1MeV neq). The first observation of n+-on-n sensor type inversion at the Large Hadron Collider is repo

APA, Harvard, Vancouver, ISO, and other styles

37

Lindemann, Dana. "The search for rare non-hadronic B-meson decays with final-state Neutrinos using the BaBar detector." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=110563.

Full text

Abstract:

This thesis presents the searches for two rare B meson decays: the radiative leptonic decay B+ -> l+ nu gamma (l = e, mu) and the flavor-changing neutral current B -> K(*) nu nubar. These searches use the full dataset collected by the BaBar experiment, which corresponds to almost 500 million BB pairs. After fully reconstructing the hadronic decay of one of the B mesons in Upsilon(4S) -> BB decays, evidence of B+ -> l+ nu gamma or B -> K(*) nu nubar is looked for in the rest of the event. No significant evidence of either signal decay is observed. Model-independent branching-fraction upper l

APA, Harvard, Vancouver, ISO, and other styles

38

Trincaz-Duvoid, Sophie. "Etude du bruit de fond engendré par la machine PEP-II à l'aide d'une mini-TPC. Etude de la désintégration doublement charmée du meson B avec le détecteur BaBar." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2001. http://tel.archives-ouvertes.fr/tel-00006496.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Rogers, Gareth James. "A study of direct CP-violation in charged B-meson decays with the LHCb experiment." Thesis, University of Cambridge, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.610176.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Davis, Adam C. "Search for Mixing and Charge Parity Violation in Neutral Charm Mesons through Semileptonic B Meson Decay." University of Cincinnati / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1470671480.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Hill, Donal Patrick. "Studies using B± → Dh± decays in the LHCb Run I data." Thesis, University of Oxford, 2015. http://ora.ox.ac.uk/objects/uuid:4e2457b4-f947-4cae-a4eb-0ea44ffd9421.

Full text

Abstract:

Using data equivalent to an integrated luminosity of 3 fb<sup>−1</sup> collected by the LHCb experiment during Run I (2011-2012), studies of beauty mesons decaying to a final state containing open charm are performed, concluding with a number of new results. Direct CP-violation is explored in <i>B</i><sup>±</sup> → <i>Dh</i><sup>±</sup> decays through several measurements of CP violating observables, where the charmed meson <i>D</i> is reconstructed in both 2-track and 4-track final states. A measurement of the <i>B</i><sup>±</sup> production asymmetry at LHCb is reported using <i>B</i><sup>±<

APA, Harvard, Vancouver, ISO, and other styles

42

Eygi, Zeynep Deniz. "The Standard Model Analyasis Of The Cp Violation In The Inclusive Semileptonic B-meson Decays." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12604712/index.pdf.

Full text

Abstract:

Being a flavor changing neutral current process, inclusive semileptonic B- meson decays provide reliable testing grounds for the Standard Model at the loop level. They are also importanat in the CKM phenomology and investing the CP violation due to the existence of sizable interference terms in the decay amplitude. In this work , the rare inclusive semileptonic B- meson decays for (lepton is electron ,muon , tau) are investigated in the context of the Standard Model.The differential branching ratio, forward-backward asymmetry ,CP &ndash<br>violating asymmetry and CP &ndash<br>violating

APA, Harvard, Vancouver, ISO, and other styles

43

Yilmaz, Umit Oktay. "The Polarization Properties Of The Final State Particles In The Rare Radiative B-meson Decay." Phd thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606100/index.pdf.

Full text

Abstract:

A general analysis of the photon and lepton polarizations in the rare Bs &amp<br>#8594<br>&amp<br>#61543<br>l+l- decay by using the most general model independent form of the effective Hamiltonian is presented. The total and the differential branching ratios for these decays, when photon is in the positive and negative helicity states, are studied. The sensitivity of &quot<br>photon polarization asymmetry&quot<br>and the longitudinal, transverse and normal polarization asymmetries of final state leptons, as well as lepton-antilepton combined asymmetries in Bs &amp<br>#8594<br>&amp<br>#61543<br

APA, Harvard, Vancouver, ISO, and other styles

44

Williams, Michael D. Jr. "Searching for Clean Observables in $B -> D* /tau- \bar{\nu}_{\tau}$ Decays." VCU Scholars Compass, 2019. https://scholarscompass.vcu.edu/etd/5885.

Full text

Abstract:

In this thesis, the clean angular observables in the $\bar{B} \to D^{*+} \ell^- \bar{\nu}_{\ell}$ angular distribution is studied. Similar angular observables are widely studied in $B \to K^* \mu^+ \mu^-$ decays. We believed that these angular observables may have different sensitivities to different new physics structures.

APA, Harvard, Vancouver, ISO, and other styles

45

Duraisamy, Murugeswaran. "Power Corrections in e⁺e^- →M₁M₂ and in Charmless Two Body B meson Decays." University of Cincinnati / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1258470956.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Acar, Hilal. "The Inclusive Semileptonic Decays Of The B-meson In A Cp Softly Broken Two Higgs Doublet Model." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/12604766/index.pdf.

Full text

Abstract:

In this work, the B-&gt<br>X_dell ell decays are examined in the context of a CP softly broken two Higgs doublet model. The differential branching ratio, forward-backward asymmetry, CP-violating asymmetry, CP-violating asymmetry in the forward-backward asymmetry and polarization asymmetries of the final lepton in this decay are studied. The dependencies of these physical parameters on the model parameters are analyzed by paying a special attention to the effects of neutral Higgs boson (NHB) exchanges and possible CP violating effects. It has been found that NHB effects are quite significant

APA, Harvard, Vancouver, ISO, and other styles

47

Blount, Nicholas L. 1979. "A search for direct and radiative decays of the neutral B meson to invisible final states using a hadronic tagging method at the BABAR detector." Thesis, University of Oregon, 2008. http://hdl.handle.net/1794/9171.

Full text

Abstract:

xii, 118 p. : ill. (some col.) A print copy of this thesis is available through the UO Libraries. Search the library catalog for the location and call number.<br>This dissertation describes a search for the decays B 0 [arrow right] invisible and B 0 [arrow right] invisible+γ, where invisible refers to a final state consisting of long lived particles with a low cross-section for interaction with matter, leading to a low probability of detection in typical particle detectors. While the branching fractions for these decays predicted by the Standard Model are far below what could be feasably

APA, Harvard, Vancouver, ISO, and other styles

48

Sumensari, Olcyr. "Search of new physics through flavor physics observables." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLS315/document.

Full text

Abstract:

La recherche indirecte des effets de la physique au-delà du Modèle Standard à travers les processus de la saveur est complémentaire aux efforts au LHC pour observer directement la nouvelle physique. Dans cette thèse nous discutons plusieurs scénarios au-delà du Modèle Standard (a) en utilisant une approche basée sur les théories de champs effective et (b) en considérant des extensions explicites du Modèle Standard, à savoir les modèles à deux doublets de Higgs et les scénarios postulant l'existence des bosons leptoquarks scalaires à basse énergie. En particulier, nous discutons le phénomène de

APA, Harvard, Vancouver, ISO, and other styles

49

Dorigo, Mirco. "Search for New Physics in the Bs -> J/psi phi and Bs -> phi phi decays at CDF." Doctoral thesis, Università degli studi di Trieste, 2013. http://hdl.handle.net/10077/8586.

Full text

Abstract:

2011/2012<br>We present a search for physics beyond the standard model (SM) through a measurement of the violation of the charge-parity (CP) symmetry in two decays of the Bs meson using data collected by the Collider Detector at Fermilab (CDF) in proton-antiproton collisions at the center-of-mass energy of 1.96 Tev. We exploit the decays Bs->Jpsi (->mu mu) phi(-> KK) and Bs -> phi(-> KK) phi(-> KK), for which the SM accurately predicts very small or vanishing CP violation; both decay modes are very sensitive to new sources of CP violation expected in a broad class of SM extensions. We ana

APA, Harvard, Vancouver, ISO, and other styles

50

Tayduganov, Andrey. "Electroweak radiative B-decays as a test of the Standard Model and beyond." Phd thesis, Université Paris Sud - Paris XI, 2011. http://tel.archives-ouvertes.fr/tel-00648217.

Full text

Abstract:

Recently the radiative B-decay to strange axial-vector mesons, B--> K1(1270) gamma, was observed with a rather large branching ratio. This process is particularly interesting as the subsequent K1-decay into its three-body final state allows us to determine the polarization of the photon, which is mostly left(right)-handed for Bbar(B) in the Standard Model while various new physics models predict additional right(left)-handed components. In this thesis, a new method is proposed to determine the polarization, exploiting the full Dalitz plot distribution, which seems to reduce significantly the s

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!