Academic literature on the topic 'Boer-Mulders function'

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Journal articles on the topic "Boer-Mulders function"

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Song, Jianxi, Yanli Li, Shi-Chen Xue, Hui Li та Xiaoyu Wang. "The cos 2ϕh Asymmetry in K± Mesons and the Λ-Hyperon-Produced SIDIS Process at Electron Ion Colliders". Universe 10, № 7 (2024): 280. http://dx.doi.org/10.3390/universe10070280.

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We investigate the cos2ϕh azimuthal asymmetry contributed by the coupling of the Boer–Mulders function and the Collins function in K±- and Λ-hyperon-produced SIDIS process. The asymmetry is studied under the transverse-momentum-dependent (TMD) factorization framework at the leading order by considering the TMD evolution effects that utilize the parametrization for non-perturbative Sudakov form factors. The DGLAP evolution effects of the collinear counterpart of the Collins function of the final-state hadrons are considered by introducing the approximated evolution kernels. We utilize the avail
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GAMBERG, LEONARD, and MARC SCHLEGEL. "FINAL STATE INTERACTIONS AND THE TRANSVERSE STRUCTURE OF PION." Modern Physics Letters A 24, no. 35n37 (2009): 2960–72. http://dx.doi.org/10.1142/s0217732309001170.

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In the factorized picture of semi-inclusive deep inelastic scattering the naive time reversal-odd parton distributions exist by virtue of the gauge link which is intrinsic to their definition. The link structure describes initial/final-state interactions of the active parton due to soft gluon exchanges with the target remnant. Though these interactions are non-perturbative, calculations of final-state interaction have been performed in a perturbative one-gluon approximation. We include higher-order contributions by applying non-perturbative eikonal methods to calculate the Boer-Mulders functio
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Christova, E., D. Kotlorz, and E. Leader. "A new extraction of the Boer-Mulders function." Journal of Physics: Conference Series 1435 (January 2020): 012003. http://dx.doi.org/10.1088/1742-6596/1435/1/012003.

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Musch, Bernhard U. "Studying the Sivers and Boer-Mulders Function with Lattice QCD." Few-Body Systems 52, no. 3-4 (2011): 259–64. http://dx.doi.org/10.1007/s00601-011-0280-3.

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Kaur, Navdeep, and Harleen Dahiya. "Transverse momentum-dependent parton distributions of pion in the light-front holographic model." International Journal of Modern Physics A 36, no. 08n09 (2021): 2150052. http://dx.doi.org/10.1142/s0217751x21500524.

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Using the light-front holographic model, we study the transverse momentum-dependent parton distributions (TMDs) for the case of pion. At leading twist, the unpolarized parton distribution function [Formula: see text] and the Boer–Mulders function [Formula: see text] are obtained for pion. We calculate both the functions using the light-front holographic model with spin improved wave function and compare the predicted results with available results of other models. In order to provide inputs in predicting future experimental data, an LO evolution is performed from model scale to experimental sc
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KANG, ZHONG-BO, and JIAN-WEI QIU. "QCD EVOLUTION OF NAIVE-TIME-REVERSAL-ODD QUARK-GLUON CORRELATION FUNCTIONS." International Journal of Modern Physics: Conference Series 20 (January 2012): 118–28. http://dx.doi.org/10.1142/s2010194512009154.

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In this talk, we examine the existing calculations of QCD evolution kernels for the scale dependence of two sets of twist-3 quark-gluon correlation functions, Tq,F(x, x) and [Formula: see text], which are the first transverse-momentum-moment of the naive-time-reversal-odd Sivers and Boer-Mulders function, respectively. The evolution kernels at the leading order in strong coupling constant αs were derived by several groups with apparent differences. We identify the sources of discrepancies and are able to reconcile the results from various groups.
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Li, Hui, Xiaoyu Wang та Zhun Lu. "Single-spin asymmetry ATsin(2ϕ−ϕS) in πp Drell-Yan process within TMD factorization". EPJ Web of Conferences 258 (2022): 03002. http://dx.doi.org/10.1051/epjconf/202225803002.

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We study the single-spin asymmetry ATsin(2ϕ−ϕS) in the pion-induced Drell-Yan process within the transverse momentum dependent factorization (TMD factorization). The asymmetry can be expressed as the convolution of the Boer-Mulders function and the transversity function. We numerically estimate the asymmetry ATsin(2ϕ−ϕS) at the COMPASS kinematics with the model results for the pion meson distributions from the light-cone wave function approach and the available parametrization for the proton distributions. We also include the TMD evolution formalism both proton and pion parton distribution fun
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Engelhardt, M., B. Musch, P. Hägler, A. Schäfer, and J. Negele. "The Boer-Mulders Transverse Momentum Distribution in the Pion and its Evolution in Lattice QCD." International Journal of Modern Physics: Conference Series 37 (January 2015): 1560034. http://dx.doi.org/10.1142/s2010194515600344.

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Starting from a definition of transverse momentum-dependent parton distributions (TMDs) in terms of hadronic matrix elements of a quark bilocal operator containing a staple-shaped gauge link, selected TMD observables can be evaluated within Lattice QCD. A TMD ratio describing the Boer-Mulders effect in the pion is investigated, with a particular emphasis on its evolution as a function of a Collins-Soper-type parameter which quantifies the proximity of the staple-shaped gauge links to the light cone.
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Nakano, Kenichi. "Measurement of Boer-Mulders Function via Drell-Yan Process by SeaQuest Experiment at Fermilab." International Journal of Modern Physics: Conference Series 40 (January 2016): 1660041. http://dx.doi.org/10.1142/s2010194516600417.

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The SeaQuest experiment is being carried out at Fermi National Accelerator Lab (FNAL) to investigate the nucleon structure with the Drell-Yan process. It utilizes the 120-GeV proton beam extracted from the FNAL Main Injector and targets of liquid hydrogen, liquid deuterium, carbon, iron and tungsten. The solid targets are used to measure the nuclear effects. This paper describes the flavor asymmetry of light anti-quark distributions in the proton ([Formula: see text]) and the angular distribution of Drell-Yan process. The Boer-Mulders function ([Formula: see text]) can be derived from the size
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Soudi, Ismail, and Abhijit Majumder. "Azimuthal anisotropies at high-pT from transverse momentum dependent (TMD) parton distribution and fragmentation functions." EPJ Web of Conferences 296 (2024): 13015. http://dx.doi.org/10.1051/epjconf/202429613015.

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Unpolarized protons can generate transversely polarized quarks or linearly polarized gluons through a distribution known as the Boer-Mulders’ function. The fragmentation of similarly polarized partons to unpolarized hadrons is called the Collins’ function. Both of these functions include correlations between the spin or polarization and the relative transverse momentum of the incoming parton or outgoing hadron, with respect to the parent particle. We explore the effect of including these and other TMDs on the production of high-pT (unpolarized) hadron production from (unpolarized) proton-proto
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Dissertations / Theses on the topic "Boer-Mulders function"

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Takekawa, Stefano. "Study of T-odd parton distribution functions in polarised Drell-Yan processes at COMPASS." Doctoral thesis, Università degli studi di Trieste, 2010. http://hdl.handle.net/10077/3722.

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2008/2009<br>Lo studio di processi di Drell-Yan (DY) polarizzato permette di accedere alle funzioni di distribuzione partoniche dipendenti dal momento intrinseco trasverso (TMD PDF) che sono usate per descrivere la struttura del protone. La proposta di misura di T-odd TMD PDF (funzioni di Sivers e di Boer-Mulders) è in scrittura e verrà presentata all'SPS Committee. Essa illustra l'intezione di usare lo spettrometro dell'esperimento COMPASS al CERN per effettuare questa misura studiando eventi di Drell-Yan polarizzato. Simulazioni di Monte Carlo sono state effettuate e sono riportate le analis
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Sbrizzai, Giulio. "Measurements of transverse momentum dependent azimuthal asymmetries in SIDIS at COMPASS." Doctoral thesis, Università degli studi di Trieste, 2011. http://hdl.handle.net/10077/4971.

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2009/2010<br>The main topic of this thesis is the measurement of the transverse momentum dependent (TMD) azimuthal asymmetries in the inclusive hadron production in the deep inelastic scattering (DIS). This work has been carried on in the framework of COMPASS, a fixed target experiment at CERN's SPS, which started data taking in 2002. One of the main topic of COMPASS is the study of the nucleon spin structure using high energy (100-200 GeV) muon beam and either transversely and longitudinally polarized proton and deuteron target. Recent developments both from the experiment
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Conference papers on the topic "Boer-Mulders function"

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Leader, Elliot. "Re-assessment of the nucleon Boer-Mulders function." In XXVII International Workshop on Deep-Inelastic Scattering and Related Subjects. Sissa Medialab, 2019. http://dx.doi.org/10.22323/1.352.0182.

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Musch, Bernhard, Philipp Haegler, Alexei Prokudin, and Andreas Schafer. "Studying the Sivers and Boer-Mulders function with Lattice QCD." In DIS 2011 (XIX Int. Workshop on Deep-Inelasltic Scattering and Related Subjects), Newport News, VA, April 10, 2011. US DOE, 2011. http://dx.doi.org/10.2172/1963486.

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Reimer, Paul E. "Measurements of Drell-Yan Angular Distributions and the Transverse Boer-Mulders Structure Function." In Proceedings of the XVII International Workshop on Deep-Inelastic Scattering and Related Topics. Science Wise Publishing, 2009. http://dx.doi.org/10.3360/dis.2009.212.

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GAMBERG, LEONARD P., GARY R. GOLDSTEIN, and MARC SCHLEGEL. "FLAVOR DEPENDENCE OF THE BOER-MULDERS FUNCTION AND ITS INFLUENCE ON AZIMUTHAL AND SINGLE-SPIN ASYMMETRIES IN SEMI-INCLUSIVE DIS." In Proceedings of the International Workshop. WORLD SCIENTIFIC, 2008. http://dx.doi.org/10.1142/9789812796950_0051.

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Christova, E., E. Leader, and M. Stoilov. "Boer–Mulders functions — A test of the assumptions made in their determination." In 10th Jubilee International Conference of the Balkan Physical Union. Author(s), 2019. http://dx.doi.org/10.1063/1.5091204.

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