Relevant bibliographies by topics / Distributions de Gluons

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Distributions de Gluons'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Distributions de Gluons"

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SALEEV, V. A., and N. P. ZOTOV. "HEAVY QUARK PHOTOPRODUCTION IN THE SEMIHARD APPROACH AT HERA AND BEYOND." Modern Physics Letters A 11, no. 01 (1996): 25–35. http://dx.doi.org/10.1142/s0217732396000059.

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Processes of heavy quark photoproduction at HERA energies and beyond are investigated using the semihard (k⊥ factorization) approach. Virtuality and longitudinal polarization of gluons in the photon-gluon subprocess as well as the saturation effects in the gluon distribution function at small x have been taken into account. The total cross-sections, rapidity and p⊥ distributions of the charm and beauty quark photoproduction have been calculated. The results are compared with ZEUS experimental data for charm photoproduction cross-section.
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Pisano, Cristian. "Transverse Momentum Dependent Gluon Distributions at the LHC." International Journal of Modern Physics: Conference Series 37 (January 2015): 1560031. http://dx.doi.org/10.1142/s2010194515600319.

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Linearly polarized gluons inside an unpolarized proton contribute to the transverse momentum distributions of (pseudo)scalar particles produced in hadronic collisions, such as Higgs bosons and quarkonia with even charge conjugation (ηc, ηb, χc0, χb0). Moreover, they can produce azimuthal asymmetries in the associated production of a photon and a J/ψ or a Υ particle, in a kinematic configuration in which they are almost back to back. These observables, which can be measured in the running experiments at the LHC, could lead to a first extraction of both the polarized and the unpolarized gluon di
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PARKHOMENKO, A. YA, and A. D. SMIRNOV. "MASS EFFECTS IN THE QUARK–GLUON DECAYS OF HEAVY PARAQUARKONIA." Modern Physics Letters A 13, no. 27 (1998): 2199–204. http://dx.doi.org/10.1142/s0217732398002345.

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Quark–gluon decays of heavy paraquarkonia [Formula: see text] are investigated with account of the masses of final quarks. The decay widths and the energy distributions of the final quarks and gluons are calculated in dependence on the relative quark masses. The strong collinear enhancement of the gluon energy distribution at the end of the spectrum is shown to take place in all such decays of ηc and ηb mesons except the decay [Formula: see text]. The total decay width is shown to have an essential dependence on the final quark masses. The corresponding branching ratios of ηc and ηb mesons are
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TRAINI, MARCO, ANDREA ZAMBARDA, and VICENTE VENTO. "THE PARTON DISTRIBUTIONS IN NUCLEONS: A QUARK MODEL ANALYSIS." Modern Physics Letters A 10, no. 17 (1995): 1235–45. http://dx.doi.org/10.1142/s0217732395001356.

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We use a laboratory frame description based on quark model wave functions to study the parton distributions in the nucleon. The present approach incorporates two major improvements, namely, it has the correct support and the renormalization group evolution is carried out to next-to-leading order. We obtain initially the parton distributions arising from the Isgur-Karl wave function. The failure of the latter to reproduce, even approximately, the data motivates us to analyze different scenarios, i.e. additional high momentum components and nonvanishing gluon distributions at the initial scale.
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Ivanov, N. Ya, A. V. Efremov, and O. V. Teryaev. "How to measure the linear polarization of gluons in unpolarized proton using the heavy-quark pair production." EPJ Web of Conferences 204 (2019): 02006. http://dx.doi.org/10.1051/epjconf/201920402006.

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In recent papers [1, 2], two new ways have been proposed to probe the linear polarization of gluons in unpolarized proton: using the azimuthal asymmetries and Callan-Gross ratio in heavy-quark pair leptoproduction, lN → l′QQ̅X. In this talk, we discuss in details the sensitivity of the QCD predictions for the azimuthal cos φ and cos 2φ asymmetries to the contribution of linearly polarized gluons inside unpolarized proton, where the azimuth φ is the angle between the lepton scattering plane (l, l′) and the heavy quark production plane (N, Q). Our analysis shows that the azimuthal distributions
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Fan, Zhouyou, Rui Zhang, and Huey-Wen Lin. "Nucleon gluon distribution function from 2 + 1 + 1-flavor lattice QCD." International Journal of Modern Physics A 36, no. 13 (2021): 2150080. http://dx.doi.org/10.1142/s0217751x21500809.

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The parton distribution functions (PDFs) provide process-independent information about the quarks and gluons inside hadrons. Although the gluon PDF can be obtained from a global fit to experimental data, it is not constrained well in the large-[Formula: see text] region. Theoretical gluon-PDF studies are much fewer than those of the quark PDFs. In this work, we present the first lattice-QCD results that access the [Formula: see text]-dependence of the gluon unpolarized PDF of the nucleon. The lattice calculation is carried out with nucleon momenta up to 2.16 GeV, lattice spacing [Formula: see
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Lansberg, J. P. "Back-to-Back Isolated Photon-Quarkonium Production at the LHC and the Transverse-Momentum-Dependent Distributions of the Gluons in the Proton." International Journal of Modern Physics: Conference Series 40 (January 2016): 1660015. http://dx.doi.org/10.1142/s2010194516600156.

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The study of isolated heavy quarkonia, such as [Formula: see text] and [Formula: see text], produced in association with a photon in proton-proton collisions at the LHC, is probably the optimal way to get right away a first experimental determination of two gluon transverse-momentum-dependent distribution (TMDs) in an unpolarized proton, [Formula: see text] and [Formula: see text], the latter giving the distribution of linearly polarized gluons. To substantiante this, we calculate the transverse-momentum-dependent effects that arise in the process under study and discuss the feasibility of the
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Liuti, Simonetta, Aurore Courtoy, Gary R. Goldstein, J. Osvaldo Gonzalez Hernandez, and Abha Rajan. "Observables for Quarks and Gluons Orbital Angular Momentum Distributions." International Journal of Modern Physics: Conference Series 37 (January 2015): 1560039. http://dx.doi.org/10.1142/s2010194515600393.

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We discuss the observables that have been recently put forth to describe quarks and gluons orbital angular momentum distributions. Starting from a standard parameterization of the energy momentum tensor in QCD one can single out two forms of angular momentum, a so-called kinetic term – Ji decomposition – or a canonical term – Jaffe-Manohar decomposition. Orbital angular momentum has been connected in each decomposition to a different observable, a Generalized Transverse Momentum Distribution (GTMD), for the canonical term, and a twist three Generalized Parton Distribution (GPD) for the kinetic
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RAMSEY, GORDON P. "POLARIZED PARTON DISTRIBUTIONS AND THE POLARIZED GLUON ASYMMETRY." International Journal of Modern Physics A 18, no. 08 (2003): 1211–18. http://dx.doi.org/10.1142/s0217751x03014538.

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The flavor-dependent valence, sea quark and antiquark spin distributions can be determined separately from theoretical assumptions and experimental data. We have determined the valence distributions using the Bjorken sum rule and have extracted polarized sea distributions, assuming that the quarks and anti-quarks for each flavor are symmetric. Other experiments have been proposed which will allow us to completely break the SU(3) symmetry of the sea flavors. To create a physical model for the polarized gluons, we investigate the gluon spin asymmetry in a proton, [Formula: see text]. By assuming
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Sepehri, Alireza, Tooraj Ghaffary, and Mohammad Ebrahim Zomorrodian. "Measurement of strong coupling constant from transverse momentum." Canadian Journal of Physics 87, no. 11 (2009): 1151–58. http://dx.doi.org/10.1139/p09-103.

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Data from e+e– annihilation into hadrons at the center of mass energy of 60 GeV are used to study the distribution of momentum components with respect to the jet axis. At high energies, the gluon emission that leads to three jet structures represents a gross violation of the parton model without gluons and finds a most natural interpretation if gluon bremsstrahlung is included. The coupling constant, αs, is measured by two different methods, first by employing the jet clustering algorithm introduced by the JADE group. Using this method, the strong coupling constant is found to be 0.123 ± 0.004
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Dissertations / Theses on the topic "Distributions de Gluons"

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Scarpa, Florent. "Probing the gluon Transverse Momentum-Dependent distributions inside the proton through quarkonium-pair production at the LHC." Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPASS104.

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La factorisation dépendante de l’impulsion transverse est utilisée pour décrire les collisions hadroniques en incluant l’impulsion transverse intrinsèque des partons à l’intérieur des hadrons. Cela requiert l’usage de distributions dépendantes de l’impulsion transverse (Transverse Momentum-Dependent distributions en anglais ou TMDs). De telles distributions doivent être extraites de données expérimentales. Les TMDs de quarks sont relativement connues grâce à des processus pour lesquels de nombreuses données sont disponibles. Les TMDs de gluons restent peu connues car il n’existe pas de process
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Hirlinger-Saylor, Nicholas. "A measurement of unpolarized cross sections and polarized cross section differences of deeply virtual compton scattering on the proton at Jefferson Laboratory using Clas." Phd thesis, Université Paris Sud - Paris XI, 2013. http://tel.archives-ouvertes.fr/tel-00913906.

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Cette thèse a pour sujet l'étude de la réaction de la Diffusion Compton Profondément Virtuelle (DVCS) sur le proton e + p -> e' + p' + gamma (DVCS). Cette réaction est mesurée en analysant l'expérience e1-dvcs2 qui a eu lieu dans le Hall B du Jefferson Laboratory avec CLAS. La prise de données s'est déroulée du 22 octobre 2008 jusqu'au 23 janvier 2009. Cette analyse a pour but la détermination des sections efficaces non polarisées et les différences de sections efficaces polarisées du DVCS, dans divers bins en xB, Q^2, t et phi. Cette analyse compare les sections efficaces avec plusieurs mesur
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Laidet, Julien. "High Energy Collisions of Dense Hadrons in Quantum Chromodynamics : LHC Phenomenology and Universality of Parton Distributions." Palaiseau, Ecole polytechnique, 2013. http://pastel.archives-ouvertes.fr/pastel-00875951.

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Lorsque l'impulsion longitudinale des partons contenus dans un hadron ultra-relativiste diminue, on observe un accroissement de leur densité. Quand la densité approche une valeur d'ordre dollar1/\alpha_sdollard, elle n'augmente plus, elle sature. Ces effets de haute densité semblent être correctement décrits par la théorie effective du "Color Glass Condensate". Du point de vue expérimental, le LHC est le meilleur outil jamais disponible pour atteindre la phase saturée de la matière hadronique. Pour cette raison, la physique de la saturation est une branche très active de la QCD dans les années
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Laidet, Julien. "Collisions à Haute Energie de Hadrons Denses en Chromodynamique Quantique : Phénoménologie du LHC et Universalité des Distributions de Partons." Phd thesis, Ecole Polytechnique X, 2013. http://pastel.archives-ouvertes.fr/pastel-00875951.

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Lorsque l'impulsion longitudinale des partons contenus dans un hadron ultra-relativiste diminue, on observe un accroissement de leur densité. Quand la densité approche une valeur d'ordre $1/\alpha_s$, elle n'augmente plus, elle sature. Ces effets de haute densité semblent être correctement décrits par la théorie effective du "Color Glass Condensate". Du point de vue expérimental, le LHC est le meilleur outil jamais disponible pour atteindre la phase saturée de la matière hadronique. Pour cette raison, la physique de la saturation est une branche très active de la QCD dans les années passées et
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Defurne, Maxime. "Photon and π⁰ electroproduction at Jefferson Laboratory-Hall A". Thesis, Paris 11, 2015. http://www.theses.fr/2015PA112105/document.

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Définies aux milieux des années 1990, les distributions de partons généralisées (GPDs) représentent un degré d'information supérieur aux facteurs de formes et fonctions de distributions de partons: en effet elles conservent la corrélation entre fraction d'impulsion longitudinale et position transverse des partons dans le nucléon. Par conséquent les GPDs permettent d'accéder à la distributions des partons dans le plan transverse en fonction de leur impulsion longitudinale. De plus il est possible de calculer le moment orbital angulaire total des quarks par le biais de la règle de somme de Ji. N
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Dyce, N. "Muoproduction of J/#psi# and the gluon distribution of the nucleon." Thesis, Lancaster University, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233996.

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Mezrag, Cédric. "Generalised Parton Distributions : from phenomenological approaches to Dyson-Schwinger equations." Thesis, Paris 11, 2015. http://www.theses.fr/2015PA112144/document.

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Cette étude est consacrée aux distributions de partons généralisées (GPDs, de l'anglais Generalised Parton Distributions). Dans un premier temps, les principales propriétés des GPDs sont rappelées. On insiste notamment sur les propriétés dites de support et sur la polynomialité. Cette dernière est automatiquement respectée lorsque l'on modélise les GPDs au travers des doubles distributions (DDs), les GPDs s'écrivant comme la transformée de Radon des DDs.Dans le cas scalaire, deux DDs, notées F et G, sont nécessaires pour décrire la GPD H. Du fait de la relation intégrale existant entre H d'un
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O'Mara, Jason Andrew. "A determination of the gluon momentum density within the proton and studies of systematic errors and trigger rates for the measurement of the proton structure function, F←2." Thesis, University of Bristol, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.295024.

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Cazaroto, Erike Roberto. "Espalhamento inelástico profundo em colisões elétron-íon." Universidade de São Paulo, 2009. http://www.teses.usp.br/teses/disponiveis/43/43134/tde-15032010-151413/.

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Neste trabalho nós abordamos dois temas da QCD em altas energias. A distribuição nuclear de glúons e a saturação de pártons. As parametrizações da distribuição nuclear de glúons disponíveis atualmente na literatura são bastante diferentes entre si, o que mostra que esta distribuição ainda é bastante incerta. Nós mostramos que é possível vincular a distribuição de glúons no núcleo em altas energias a observáveis nucleares inclusivos, o que facilitará a distinção entre as diferentes parametrizações quando surgirem novos dados experimentais destes observáveis. O segundo tema abordado, a saturação
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Ramachandran, Suvarna. "PROBING THE LOW-X GLUON HELICITY DISTRIBUTION WITH DIJET DOUBLE SPIN ASYMMETRIES IN POLARIZED PROTON COLLISIONS AT √S = 510 GEV." UKnowledge, 2018. https://uknowledge.uky.edu/physastron_etds/58.

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The proton is a complex subatomic particle consisting of quarks and gluons, and one of the key questions in nuclear physics is how the spin of the proton is distributed amongst its constituents. Polarized deep inelastic scattering experiments with leptons and protons estimate that the quark spin contribution is approximately 30%. The limited kinematic reach of these experiments, combined with the fact that they are only indirectly sensitive to the electrically neutral gluon, means they can provide very little information about the gluon contribution to the spin of the proton. In contrast, hadr
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Books on the topic "Distributions de Gluons"

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Kachelriess, Michael. Hadrons, partons and QCD. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198802877.003.0018.

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This chapter first discusses the breaking of scale invariance of QCD with massless quarks by quantum corrections and explains that this effect is responsible for the bulk of hadron masses. Then the parton picture is introduced, where one replaces a hadron which is probed in a hard process by free quarks and gluons. Perturbative QCD describes via the DGLAP equations the evolution of parton distribution functions f(x,Q2) as functions of Q2, requires however as as input f(x,Q20) from measurements at a fixed scale Q0 »QCD. The total annihilation cross section e+e →hadrons is calculated and it is s
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Book chapters on the topic "Distributions de Gluons"

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Rith, K. "Nuclear Effects in Quark and Gluon Distributions — Experimental Perspectives." In Springer Proceedings in Physics. Springer Berlin Heidelberg, 1988. http://dx.doi.org/10.1007/978-3-642-73473-1_30.

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Mukherjee, A., S. Nair, and V. K. Ohja. "Wigner Distributions of the Quark and Gluon in the Light-Front Dressed Quark Model." In Springer Proceedings in Physics. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-25619-1_27.

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Aichelin, Joerg, Pol B. Gossiaux, Marlene Nahrgang, and Klaus Werner. "What the Azimuthal Distribution of Heavy Mesons Tells Us About the Quark Gluon Plasma?" In Discoveries at the Frontiers of Science. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-34234-0_1.

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McLerran, Larry. "Recent Progress in Understanding Quark and Gluon Distribution Functions for Large Nuclei at Small x." In NATO ASI Series. Springer US, 1994. http://dx.doi.org/10.1007/978-1-4615-2516-5_38.

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Peskin, Michael E. "The Gluon." In Concepts of Elementary Particle Physics. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198812180.003.0010.

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This chapter describes the description of the proton as a bound state of partons. After a review of the properties of parton distribution functions, it introduces the evidence for a component of the proton responsible for its binding. It introduces the model of strong interactions as mediated by a spin 1 gluon and presents the evidence for this model from event shapes in electron-positron annihilation to hadrons.
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Harris, Philip J., and Geoffrey B. Fincher. "Distribution, Fine Structure and Function of (1,3;1,4)-β-Glucans in the Grasses and Other Taxa." In Chemistry, Biochemistry, and Biology of 1-3 Beta Glucans and Related Polysaccharides. Elsevier, 2009. http://dx.doi.org/10.1016/b978-0-12-373971-1.00021-2.

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Conference papers on the topic "Distributions de Gluons"

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Mukherjee, Asmita, Sreeraj Nair, and Jai More. "Wigner Distributions of Quarks and Gluons." In XXV International Workshop on Deep-Inelastic Scattering and Related Subjects. Sissa Medialab, 2017. http://dx.doi.org/10.22323/1.297.0224.

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Mukherjee, Asmita. "Wigner Distributions and Orbital Angular Momentum of Quarks and Gluons." In QCD Evolution 2015. Sissa Medialab, 2016. http://dx.doi.org/10.22323/1.249.0013.

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Serino, Mirko, Emilia LEWANDOWSKA, Anna Stasto, Zachary Snyder, and Krzysztof Golec Biernat. "The double gluon distribution from the single gluon distribution." In XXIV International Workshop on Deep-Inelastic Scattering and Related Subjects. Sissa Medialab, 2016. http://dx.doi.org/10.22323/1.265.0023.

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Tanaka, Kazuhiro. "Transverse-spin gluon distribution function." In XXII. International Workshop on Deep-Inelastic Scattering and Related Subjects. Sissa Medialab, 2014. http://dx.doi.org/10.22323/1.203.0229.

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Lipatov, Artem V., Hannes Jung, Anatoly V. Kotikov, and Nikolai P. Zotov. "Critical Tests of Unintegrated Gluon Distributions." In 15th International Workshop on Deep-Inelastic Scattering and Related Subjects. Science Wise Publishing, 2007. http://dx.doi.org/10.3360/dis.2007.38.

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Kovchegov, Yuri, Daniel Pitonyak, and Matthew Sievert. "Gluon Helicity Distribution at Small x." In QCD Evolution 2017. Sissa Medialab, 2018. http://dx.doi.org/10.22323/1.308.0018.

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RODRIGUES, J., and P. J. MULDERS. "TRANSVERSE MOMENTUM DEPENDENT GLUON DISTRIBUTION FUNCTIONS." In Proceedings of the International Workshop. WORLD SCIENTIFIC, 2001. http://dx.doi.org/10.1142/9789812811653_0051.

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Thorne, Robert S. "Gluon Distributions and Fits Using Dipole Cross-Sections." In DEEP INELASTIC SCATTERING: 13th International Workshop on Deep Inelastic Scattering; DIS 2005. AIP, 2005. http://dx.doi.org/10.1063/1.2122047.

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Ortiz, Antonio, Eleazar Cuautle, Guy Paić, et al. "Sphericity distribution in pp collisions and the gluon Parton Distribution Functions." In XII MEXICAN WORKSHOP ON PARTICLES AND FIELDS. AIP, 2011. http://dx.doi.org/10.1063/1.3622705.

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Anselmino, M., U. D’Alesio, S. Melis, and F. Murgia. "Constraints on Gluon Sivers Distribution from RHIC Results." In Proceedings of the 17th International Spin Physics Symposium. AIP, 2007. http://dx.doi.org/10.1063/1.2750845.

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Reports on the topic "Distributions de Gluons"

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Boer, D., R. Venugopalan, M. Diehl, R. Milner, W. Vogelsang, and et al. Gluons and the quark sea at high energies: distributions, polarization, tomography. Office of Scientific and Technical Information (OSTI), 2011. http://dx.doi.org/10.2172/1034033.

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Diehl, Markus. The Overlap Representation of Skewed Quark and Gluon Distributions. Office of Scientific and Technical Information (OSTI), 2000. http://dx.doi.org/10.2172/765006.

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Probing the gluon distribution with the SS-OS dijet cross-section ratio. Office of Scientific and Technical Information (OSTI), 1993. http://dx.doi.org/10.2172/10191518.

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