Littérature scientifique sur le sujet « Double Higgs production »
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Articles de revues sur le sujet "Double Higgs production"
Ahmed, Ijaz. « Sources of Charged Higgs Pair through Double or Triple Higgs Production at Linear Colliders ». Advances in High Energy Physics 2017 (2017) : 1–7. http://dx.doi.org/10.1155/2017/6139250.
Texte intégralArhrib, Abdesslam, Rachid Benbrik, Chuan-Hung Chen, Renato Guedes et and Rui Santos. « Double neutral Higgs production in the two-Higgs doublet model at the LHC ». Journal of High Energy Physics 2009, no 08 (11 août 2009) : 035. http://dx.doi.org/10.1088/1126-6708/2009/08/035.
Texte intégralGlover, E. W. N., et A. D. Martin. « Double Higgs boson production in Z decay ». Physics Letters B 226, no 3-4 (août 1989) : 393–96. http://dx.doi.org/10.1016/0370-2693(89)91217-3.
Texte intégralHashemi, M., et I. Ahmed. « Observability of triple or double charged Higgs production in two Higgs doublet model type II at an e+e- linear collider ». International Journal of Modern Physics A 30, no 04n05 (11 février 2015) : 1550022. http://dx.doi.org/10.1142/s0217751x15500220.
Texte intégralGuo, Yu-Chen, Chong-Xing Yue et Zhi-Cheng Liu. « Double elementary Goldstone Higgs boson production in future linear colliders ». International Journal of Modern Physics A 33, no 08 (20 mars 2018) : 1850038. http://dx.doi.org/10.1142/s0217751x18500380.
Texte intégralPetrov, V. A., et R. A. Ryutin. « Exclusive double diffractive Higgs boson production at LHC ». European Physical Journal C 36, no 4 (août 2004) : 509–13. http://dx.doi.org/10.1140/epjc/s2004-01972-4.
Texte intégralKEUNG, WAI-YEE. « DOUBLE HIGGS FROM W-W FUSION ». Modern Physics Letters A 02, no 10 (octobre 1987) : 765–70. http://dx.doi.org/10.1142/s0217732387000951.
Texte intégralHan, Jinzhong, Bingfang Yang, Ning Liu et Jitao Li. « Higgs boson production in the U(1)B−L model at the ILC ». International Journal of Modern Physics A 31, no 17 (20 juin 2016) : 1650099. http://dx.doi.org/10.1142/s0217751x16500998.
Texte intégralCasalbuoni, R., et L. Marconi. « The linear BESS model and double Higgs-strahlung production ». Journal of Physics G : Nuclear and Particle Physics 29, no 6 (22 avril 2003) : 1053–60. http://dx.doi.org/10.1088/0954-3899/29/6/308.
Texte intégralGodunov, S. I., M. I. Vysotsky et E. V. Zhemchugov. « Double Higgs boson production in the models with isotriplets ». Ядерная физика и инжиниринг 5, no 9 (2014) : 756–59. http://dx.doi.org/10.1134/s2079562914080144.
Texte intégralThèses sur le sujet "Double Higgs production"
Vásquez, Tocora Andrés Felipe. « Enhancement in the double Higgs boson production by e+ e− annihilation and physics beyond the standard model ». São Paulo, 2018. http://hdl.handle.net/11449/157221.
Texte intégralCoorientador: Alberto Tonero
Banca: Ricardo D'Elia Matheus
Banca: Enrico Bertuzzo
Abstract: The main goal of this dissertation is to show the enhancement of the cross-section for the double Higgs production through pair annihilation by including effective interactions and through the non-perturbative Sommerfeld effect. Bounds to some Wilson coefficients were obtained from such enhancement, this in the scenarios of the future e+ e− -colliders (FCC-ee, ILC, CLIC). In order to achieve this, some computational tools were implemented: FeynRules, FeynArts, FormCalc, and LoopTools. It is also shown the enhancement of the double Higgs production in 2HDM and MSSM, discussing the general framework of these two models. In addition, it is studied the threshold behavior of the cross-section for the double Higgs production when a hidden sector couples to the Higgs boson, yielding resonances below the threshold energy due to non-perturbative effects. We study the Sommerfeld effect in the double Higgs production in the scenario of e+ e− -colliders. The enhancement is discussed as generated from a hidden sector coupled to the Higgs boson. Below and above threshold enhancements are presented. Such analysis is of importance in the ILC project, which will operate up to the threshold energy √s = 250 GeV. The results has been achieved by the use of computational tools like FeynArts, FormCalc, and LoopTools
Resumo: O objetivo principal dessa dissertação é, mostrar o aprimoramento da seção de choque para a produção em dobro dos bósons de Higgs, por meio de aniquilação de pares, incluindo interações efetivas e através do efeito não perturbativo de Sommerfeld. De tais aprimoramentos, os limites para alguns coeficientes de Wilson foram obtidos, isso nos cenários de futuros aceleradores de e+e- (FCC-ee, ILC, CLIC). Para atingir estes resultados, algumas ferramentas computacionais foram implementadas: FeynRules, FeynArts, FormCalc e LoopTools. Também, é mostrado o aprimoramento da produção em dobro de bósons de Higgs no "2HDM" e "MSSM", discutindo o marco geral desses dois modelos. Além disso, foi estudado o comportamento, perto do limite de produção, da seção de choque da produção em dobro dos bósons de Higgs, quando um setor escondido é acoplado ao Higgs, produzindo ressonâncias abaixo da energia limite de produção, devido à efeitos não perturbativos
Mestre
Di, Domenico Franco Maria Rosaria. « A new neural network to select the b-jet pair from H -> ; bb in HH -> ; bbtautau searches at CMS ». Doctoral thesis, Università di Siena, 2021. http://hdl.handle.net/11365/1144841.
Texte intégralZhang, Ruiqi. « Search for the W ± W ± W ∓ production and the doubly charged higgs with the Atlas detector ». Thesis, Aix-Marseille, 2017. http://www.theses.fr/2017AIXM0434/document.
Texte intégralThe ATLAS (A Toroidal LHC Apparatus) experiment, a collaboration of more than 3,000 scientists worldwide, is conducting research at the Large Hadron Collider (LHC). It produced proton beam collisions at an energy in the center of mass of 7 TeV in 2011 and 8 TeV in 2012, period called Run1 and representing 20.3 fb-1 of integrated luminosity, then in 2015 and 2016 at 13 TeV for Run 2 with 36.1 fb-1. The ATLAS general purpose detector has a rich potential for accurate Standard Model (SM) measurements and the search for new physics phenomena. Two physics analyzes are presented here. The first is to search the Run 1 data for tri-bosons production, W ± W ± W∓, totally or partially decayed into leptons and to study abnormal quartic gauge coupling (aQGC). The number of observed events is consistent with the SM predictions. The observed upper limit at 95% CL on the W ± W ± W∓ SM cross section is 730 fb with an expected limit of 560 fb in the absence of W ± W ± W∓ production. The second analysis presented is the search for the doubly charged Higgs boson carried out on the Run 2 data. This boson is predicted by a model that extends the SM to allow massive neutrinos. This model introduces several Higgs bosons, one of which is the H ±±. The case where this latter decays in bosons W with a final state with two leptons of the same charge is more particularly studied. The estimated total background is in agreement with the data and no significant excess is observed. Upper limits are deduced and the model considered is excluded at 95% CL for MH ±± <220 GeV
Dumitriu, Ana Elena. « Study of the Higgs production in association with tt quarks ». Thesis, Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0295/document.
Texte intégralThe scientific work presented in this thesis is based on proton proton collision produced, at 13 TeV in the center of mass, created by the Large Hadron Collider (LHC) and recorded between 2015 and 2017 by the ATLAS detector.After a short introduction on the physics program at LHC, the first chapter gives a comprehensive overview of the theoretical context and motivation. Then a complete description of the ATLAS detector and more generally the experimental setup is given with a highlight on the different physics objects used in this research.The third chapter is dealing with a measure of the performances of the ATLAS electromagnetic calorimeter, namely the study of the electron identification efficiencies using W decaying into electrons and neutrinos events.In the following chapters, the core of this thesis work, the search and study of the associated Higgs boson production with top quark pair, so-called ttH production, within the Standard Model schema and beyond is treated. The observation for ttH production with the ATLAS detector recently announced in 2018 represents a significant milestone for the High-Energy Physics field. In order to broaden the spectrum of this ttH analysis beyond the SM, this 4L channel final states was also studied in the context of the search for doubly charged Higgs boson decaying into W±W±, H±±→W±W±.In conclusions, future prospects in Standard Model (SM) as well as Beyond SM (BSM) scientific results that could be reached using the full Run1 and Run2 combined available statistics are given
Galler, Peter. « Effects of heavy Higgs bosons in the hadronic production of top-quark pairs including QCD corrections ». Doctoral thesis, Humboldt-Universität zu Berlin, 2018. http://dx.doi.org/10.18452/18796.
Texte intégralIn this dissertation a possible extension of the standard model of particle physics (SM) in the Higgs sector is investigated using top-quark pair production at the Large Hadron Collider as a probe. In particular, the so-called two-Higgs-doublet model (2HDM) is studied. The 2HDM introduces several spin-0 bosons (which are also called Higgs bosons) in addition to the SM Higgs boson. In this thesis these additional Higgs bosons are assumed to be heavy enough to decay into a top-antitop quark pair. Thus, the experimental signatures of these new particles can be studied through observables of top-quark pair production. To this end the resonant production of heavy neutral Higgs bosons and their decay into top-quark pairs in calculated up to next-to-leading order corrections in the QCD coupling constant retaining the full spin information of the top-antitop pair. This allows to analyse spin dependent observables which can be more sensitive to effects of heavy Higgs bosons than spin independent ones especially in the case of top-antitop spin correlations. The additional application of kinematical cuts on the phase space of top and antitop quarks can enhance the sensitivity further. In this thesis a method is presented that can be used to construct the spin correlation which is most sensitive to the effects of heavy Higgs bosons on top-quark pair production. Furthermore, it is shown that the next-to-leading order corrections are required to construct observables which entail robust predictions. The results for the next-to-leading order in the QCD coupling constant presented in this thesis were the first ones given for resonant heavy Higgs production and decay into top-quark pairs.
Chevallier, Florent. « Mesure de la section efficace de production de quarks top en paires dans le canal lepton+jets à DØ et à ATLAS et interprétation en terme de boson de Higgs chargé dans ATLAS ». Université Joseph Fourier (Grenoble), 2007. http://www.theses.fr/2007GRE10054.
Texte intégralOne of the main challenges of the current and future colliders TeVatron and LHC is the discovery of physics beyond the Standard Model. This goal may be accessible through precision measurements in the top quark sector. Deviations from theoretical predictions may bring to light the first indirect signs of new physics. The work exposed in this thesis deals with the production cross-section of top quark pairs via the strong interaction, within both D0 and ATLAS collaborations. Firstly, I've worked at D0 on the improvement of the reconstruction of soft electrons, in order to tag b-jets produced in top-antitop quarks events. Then I focused myself on the measurement of the top quark pair production cross-section with 420 pb-1 of D0 data. The measured cross-section is in agreement with the Standard Model expectations. In the ATLAS experiment, I tried to develop a procedure in ordrer to select top quark pair events, using the knowledge and the techniques from the D0 experiment. This work also highlighted the main systematic sources that can affect the sensitivity of the measurement. After one year of data taking at low luminosity, this preliminary analysis obtains a sensitivity at a few percent level, leading to a good discovery potential of new physic signs, like charged Higgs bosons. These new particles appear in non minimal standard models, and modify the phenomenology of top pair events. This new analysis has shown a good sensitivity for some regions of the parameter space
Chevallier, Florent. « Mesure de la section efficace de production de quarks top en paires dans le canal lepton+jets à D0 et à ATLAS et interprétation en terme de boson de Higgs chargé dans ATLAS ». Phd thesis, 2007. http://tel.archives-ouvertes.fr/tel-00181009.
Texte intégralLe travail décrit dans cette thèse porte sur l'étude de la section efficace de production de quarks top par interaction forte au sein des deux collaborations D0 et ATLAS.
Mon travail à D0 a tout d'abord consisté en l'amélioration de la reconstruction des électrons de faible impulsion au sein de jets. Ce nouvel algorithme peut désormais être utilisé pour identifier les jets de quarks b, produits dans les événements top-antitop recherchés. Ce travail s'est poursuivi par une analyse de mesure de la section efficace de production de paires de quarks top, avec 420 pb-1 de données de l'expérience D0. Les résultats de cette analyse sont en accord avec les prédictions du Modèle Standard.
Dans l'expérience ATLAS, mon travail a consisté à élaborer une procédure de sélection des événements top-antitop, en adaptant les connaissances et les techniques issues de l'expérience D0 à l'environnement plus exigeant des collisions du LHC. Cette analyse a permis d'identifier les sources d'incertitudes qui auront un impact sur la mesure. Pour une année de fonctionnement du détecteur à basse luminosité, cette section efficace pourrait être mesurée avec une précision de quelques pourcents. Cette sensibilité permettrait de déceler des signes de nouvelle physique. La phénoménologie des événements top-antitop est modifiée par la présence de bosons de Higgs chargés apparaissant dans des modèles standard non minimaux. L'analyse effectuée dans ce nouveau cadre théorique a ainsi montré qu'une découverte serait possible pour certaines régions de l'espace des paramètres.
Chapitres de livres sur le sujet "Double Higgs production"
Meadowcroft, James. « Governing the transition to a new energy economy ». Dans Energy... beyond oil. Oxford University Press, 2007. http://dx.doi.org/10.1093/oso/9780199209965.003.0015.
Texte intégralActes de conférences sur le sujet "Double Higgs production"
Bury, Florian. « Double Higgs production at CMS ». Dans 41st International Conference on High Energy physics. Trieste, Italy : Sissa Medialab, 2022. http://dx.doi.org/10.22323/1.414.0507.
Texte intégralPortales, Louis. « Double Higgs production at the LHC ». Dans Particles and Nuclei International Conference 2021. Trieste, Italy : Sissa Medialab, 2022. http://dx.doi.org/10.22323/1.380.0417.
Texte intégralArhrib, Abdesslam, Rachid Benbrik, Cheng-Wei Chiang, John Ellis, Salah Nasri et Ehab Malkawi. « Double Higgs production in the Two Higgs Doublet Model at the linear collider ». Dans HIGH ENERGY PHYSICS AND APPLICATIONS : Proceedings of the UAE-CERN Workshop. AIP, 2008. http://dx.doi.org/10.1063/1.2927595.
Texte intégralRoyon, Christophe. « Inclusive Higgs production via double pomeron exchange ». Dans International Europhysics Conference on High Energy Physics. Trieste, Italy : Sissa Medialab, 2001. http://dx.doi.org/10.22323/1.007.0038.
Texte intégralDavies, Joshua, Go Mishima, Matthias Steinhauser et David Wellmann. « Double Higgs Production in the High Energy Limit ». Dans Loops and Legs in Quantum Field Theory. Trieste, Italy : Sissa Medialab, 2018. http://dx.doi.org/10.22323/1.303.0022.
Texte intégralHoff, Jens, et Jonathan Grigo. « Mass-corrections to double-Higgs production & ; TopoID ». Dans Loops and Legs in Quantum Field Theory. Trieste, Italy : Sissa Medialab, 2014. http://dx.doi.org/10.22323/1.211.0030.
Texte intégralAhmed, Ijaz, et Majid HASHEMI. « Charged Higgs through Triple or Double Higgs Production in a General Two Higgs Doublet Model at an e+e- Linear Collider ». Dans Prospects for Charged Higgs Discovery at Colliders. Trieste, Italy : Sissa Medialab, 2015. http://dx.doi.org/10.22323/1.209.0031.
Texte intégralDib, Claudio O. « Double Higgs Production at the LHC as a Robust Test of Little Higgs Models ». Dans XXV PHYSICS IN COLLISION : Proceedings of the XXV International Conference on Physics in Collision. AIP, 2006. http://dx.doi.org/10.1063/1.2173599.
Texte intégralOrtona, Giacomo. « Searches for double Higgs production or decay using the CMS detector ». Dans 38th International Conference on High Energy Physics. Trieste, Italy : Sissa Medialab, 2017. http://dx.doi.org/10.22323/1.282.0404.
Texte intégralRan, Kunlin. « Constraints on the Higgs boson self-coupling from the combination of single-Higgs and double-Higgs production analyses performed with the ATLAS experiment ». Dans 40th International Conference on High Energy physics. Trieste, Italy : Sissa Medialab, 2020. http://dx.doi.org/10.22323/1.390.0104.
Texte intégralRapports d'organisations sur le sujet "Double Higgs production"
Tuttle, Joshua P. A Search for Long-Lived Doubly-Charged Higgs Boson Production in anti-p p Collisions at sqrt(s)=1.96 TeV using RunII CDF. Office of Scientific and Technical Information (OSTI), janvier 2005. http://dx.doi.org/10.2172/948160.
Texte intégralZdrazil, Marian. Search for doubly-charged Higgs Boson production in the decay H++ H-- → μ+μ+μ-μ- with the D0 detector at √s = 1.96-TeV. Office of Scientific and Technical Information (OSTI), août 2004. http://dx.doi.org/10.2172/879006.
Texte intégralKim, Tae Jeong. Search for Doubly-charged Higgs Boson Production in the Decay H++ H--→ μ+μ+μ-μ- with 1.1 fb-1 at D0 Detector. Office of Scientific and Technical Information (OSTI), juin 2007. http://dx.doi.org/10.2172/935243.
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