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Artículos de revistas sobre el tema "Polarised Drell-Yan"

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Autor: Grafiati
Publicado: 11 de marzo de 2023

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1

Longo, Riccardo. "Polarised Drell-Yan at COMPASS". EPJ Web of Conferences 137 (2017): 05013. http://dx.doi.org/10.1051/epjconf/201713705013.

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2

Chiosso, Michela. "Polarised Drell-Yan measurements at COMPASS". EPJ Web of Conferences 85 (2015): 02036. http://dx.doi.org/10.1051/epjconf/20158502036.

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3

Quaresma, M. "Polarised Drell-Yan measurements at COMPASS-II". Physics of Particles and Nuclei 45, n.º 1 (enero de 2014): 333–35. http://dx.doi.org/10.1134/s1063779614010845.

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4

Quaresma, Márcia. "Measurement of the Polarised Drell-Yan process at COMPASS". EPJ Web of Conferences 81 (2014): 04011. http://dx.doi.org/10.1051/epjconf/20148104011.

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5

Takekawa, S. "Spin physics in polarised Drell-Yan processes at COMPASS". Nuclear Physics B - Proceedings Supplements 198, n.º 1 (enero de 2010): 124–27. http://dx.doi.org/10.1016/j.nuclphysbps.2009.12.025.

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6

DENISOV, OLEG. "HADRON STRUCTURE STUDY IN FORTHCOMING DRELL–YAN EXPERIMENTS: COMPASS PROJECT AT CERN". Modern Physics Letters A 24, n.º 35n37 (7 de diciembre de 2009): 3033–44. http://dx.doi.org/10.1142/s0217732309001248.

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The study of Drell–Yan (DY) processes involving the collision of an (un)polarised hadron beam on an (un)polarised proton target can result in a fundamental improvement of our knowledge on the transverse momentum dependent (TMDs) parton distribution functions (PDFs) of hadrons. The production mechanism of J/ψ and J/ψ - DY duality can also be addressed. One of the forthcoming polarised DY experiments (COMPASS (SPS, CERN)) is discussed in this context. The most important features of this project are briefly reviewed, as well as its sensitivity to the various transverse momentum dependent spin asymmetries.
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7

Quaresma, Márcia. "Study of transverse momentum dependent distributions from polarised Drell-Yan at COMPASS". EPJ Web of Conferences 73 (2014): 02010. http://dx.doi.org/10.1051/epjconf/20147302010.

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8

Massacrier, L., M. Anselmino, R. Arnaldi, S. J. Brodsky, V. Chambert, W. den Dunnen, J. P. Didelez et al. "Studies of Transverse-Momentum-Dependent Distributions with a Fixed-Target ExpeRiment Using the LHC Beams (AFTER@LHC)". International Journal of Modern Physics: Conference Series 40 (enero de 2016): 1660107. http://dx.doi.org/10.1142/s2010194516601071.

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We report on the studies of Transverse-Momentum-Dependent distributions (TMDs) at a future fixed-target experiment –AFTER@LHC– using the [Formula: see text] or Pb ion LHC beams, which would be the most energetic fixed-target experiment ever performed. AFTER@LHC opens new domains of particle and nuclear physics by complementing collider-mode experiments, in particular those of RHIC and the EIC projects. Both with an extracted beam by a bent crystal or with an internal gas target, the luminosity achieved by AFTER@LHC surpasses that of RHIC by up to 3 orders of magnitude. With an unpolarised target, it allows for measurements of TMDs such as the Boer-Mulders quark distributions and the distribution of unpolarised and linearly polarised gluons in unpolarised protons. Using polarised targets, one can access the quark and gluon Sivers TMDs through single transverse-spin asymmetries in Drell-Yan and quarkonium production. In terms of kinematics, the fixed-target mode combined with a detector covering [Formula: see text] allows one to measure these asymmetries at large [Formula: see text] in the polarised nucleon.
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9

MATHEWS, PRAKASH y V. RAVINDRAN. "CAN POLARIZED DRELL-YAN SHED MORE LIGHT ON THE PROTON SPIN?" Modern Physics Letters A 07, n.º 29 (21 de septiembre de 1992): 2695–702. http://dx.doi.org/10.1142/s0217732392002159.

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We analyze polarized Drell-Yan process using the factorization method and derive operator definitions for polarized parton distribution functions. We demonstrate that a factorization analogous to that in the unpolarized Drell-Yan case holds in this process. We study the leading order gluonic contribution to the first moment of polarized Drell-Yan function and show that it is consistent with the results obtained from polarized deep inelastic scattering.
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10

Parsamyan, Bakur. "Polarized Drell-Yan at COMPASS-II: Transverse Spin Physics Program". International Journal of Modern Physics: Conference Series 40 (enero de 2016): 1660109. http://dx.doi.org/10.1142/s2010194516601095.

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Successful realization of polarized Drell-Yan physics program is one of the main goals of the second stage of the COMPASS experiment. Drell-Yan measurements with high energy (190 GeV/c) pion beam and transversely polarized NH3 target have been initiated by a pilot-run in the October 2014 and will be followed by 140 days of data taking in 2015. In the past twelve years COMPASS experiment performed series of SIDIS measurements with high energy muon beam and transversely polarized deuteron and proton targets. Results obtained for Sivers effect and other target transverse spin dependent and unpolarized azimuthal asymmetries in SIDIS serve as an important input for general understanding of spin-structure of the nucleon and are being used in numerous theoretical and phenomenological studies being carried out in the field of transvers-spin physics. Measurement of the Sivers and all other azimuthal effects in polarized Drell-Yan at COMPASS will reveal another side of the spin-puzzle providing a link between SIDIS and Drell-Yan branches. This will be a unique possibility to test universality and key-features of transverse momentum dependent distribution functions (TMD PDFs) using essentially same experimental setup and exploring same kinematic domain. In this review main physics aspects of future COMPASS polarized Drell-Yan measurement of azimuthal transverse spin asymmetries will be presented, giving a particular emphasis on the link with very recent COMPASS results obtained for SIDIS transverse spin asymmetries from four ”Drell-Yan” [Formula: see text]-ranges.
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11

Longo, R. "Polarized Drell--Yan Measurements at COMPASS". Acta Physica Polonica B Proceedings Supplement 10, n.º 4 (2017): 1119. http://dx.doi.org/10.5506/aphyspolbsupp.10.1119.

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12

Quintans, Catarina. "Polarized Drell-Yan studies at COMPASS". EPJ Web of Conferences 66 (2014): 06021. http://dx.doi.org/10.1051/epjconf/20146606021.

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13

Kodaira, Jiro y Hiroshi Yokoya. "Lepton asymmetry in polarized Drell-Yan". Nuclear Physics B - Proceedings Supplements 116 (marzo de 2003): 202–6. http://dx.doi.org/10.1016/s0920-5632(03)80170-6.

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14

Wang, Xiaoyu y Zhun Lu. "π-N Drell-Yan Process in TMD Factorization". Advances in High Energy Physics 2019 (22 de enero de 2019): 1–20. http://dx.doi.org/10.1155/2019/6734293.

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This article presents the review of the current understanding on the pion-nucleon Drell-Yan process from the point of view of the TMD factorization. Using the evolution formalism for the unpolarized and polarized TMD distributions developed recently, we provide the theoretical expression of the relevant physical observables, namely, the unpolarized cross section, the Sivers asymmetry, and the cos⁡2ϕ asymmetry contributed by the double Boer-Mulders effects. The corresponding phenomenology, particularly at the kinematical configuration of the COMPASS πN Drell-Yan facility, is displayed numerically.
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15

KAWAMURA, HIROYUKI, JIRO KODAIRA, HIROTAKA SHIMIZU y KAZUHIRO TANAKA. "QT RESUMMATION IN TRANSVERSELY POLARIZED DRELL-YAN PROCESS". International Journal of Modern Physics A 21, n.º 04 (10 de febrero de 2006): 918–21. http://dx.doi.org/10.1142/s0217751x06032319.

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We calculate QCD corrections to transversely polarized Drell-Yan process at a measured QT of the produced lepton pair in the dimensional regularization scheme. The QT distribution is discussed resumming soft gluon effects relevant for small QT.
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16

Pešek, Michael. "Upgraded polarized target for polarized Drell-Yan measurement at COMPASS". Journal of Physics: Conference Series 678 (5 de febrero de 2016): 012005. http://dx.doi.org/10.1088/1742-6596/678/1/012005.

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17

Liu, M. X., X. Jiang, D. G. Crabb, J. P. Chen y M. Bai. "Prospects of polarized fixed target Drell-Yan experiments". Journal of Physics: Conference Series 295 (1 de mayo de 2011): 012164. http://dx.doi.org/10.1088/1742-6596/295/1/012164.

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18

Goto, Yuji. "Internal-target polarized Drell-Yan Experiment at RHIC". Journal of Physics: Conference Series 295 (1 de mayo de 2011): 012166. http://dx.doi.org/10.1088/1742-6596/295/1/012166.

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19

Kawamura, H., J. Kodaira, H. Shimizu y K. Tanaka. "QT resummation in transversely polarized Drell-Yan process". Nuclear Physics B - Proceedings Supplements 157, n.º 1 (julio de 2006): 192–96. http://dx.doi.org/10.1016/j.nuclphysbps.2006.03.047.

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20

Vogelsang, W. y A. Weber. "Drell-Yan dimuon production with transversely polarized protons". Physical Review D 48, n.º 5 (1 de septiembre de 1993): 2073–82. http://dx.doi.org/10.1103/physrevd.48.2073.

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21

Jaffe, R. L. y Xiangdong Ji. "Chiral-odd parton distributions and polarized Drell-Yan process". Physical Review Letters 67, n.º 5 (29 de julio de 1991): 552–55. http://dx.doi.org/10.1103/physrevlett.67.552.

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22

Chun-Gui, Duan, Shi Li-Jie, Shen Peng-Nian y Li Guang-Lie. "Nuclear Effects in Polarized Proton–Deuteron Drell–Yan Processes". Chinese Physics Letters 21, n.º 3 (19 de febrero de 2004): 450–52. http://dx.doi.org/10.1088/0256-307x/21/3/009.

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23

Finger, M., M. Finger, J. Matousek y M. Pesek. "COMPASS Polarized Target for Pion-induced Drell–Yan Experiment". Nuclear and Particle Physics Proceedings 273-275 (abril de 2016): 2557–59. http://dx.doi.org/10.1016/j.nuclphysbps.2015.09.458.

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24

Hino, S. y S. Kumano. "Polarized proton-deuteron Drell-Yan processes and parton distributions". Nuclear Physics A 670, n.º 1-4 (mayo de 2000): 80–83. http://dx.doi.org/10.1016/s0375-9474(00)00074-9.

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25

Kanazawa, Y., Yuji Koike y N. Nishiyama. "ALT in the nucleon-nucleon polarized Drell-Yan process". Nuclear Physics A 670, n.º 1-4 (mayo de 2000): 84–87. http://dx.doi.org/10.1016/s0375-9474(00)00075-0.

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26

Tangerman, R. D. y P. J. Mulders. "Intrinsic transverse momentum and the polarized Drell-Yan process". Physical Review D 51, n.º 7 (1 de abril de 1995): 3357–72. http://dx.doi.org/10.1103/physrevd.51.3357.

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27

Ravindran, V., J. Smith y W. L. van Neerven. "NNLO Corrections to the Polarized Drell-Yan Coefficient Function". Nuclear Physics B - Proceedings Supplements 135 (octubre de 2004): 14–18. http://dx.doi.org/10.1016/j.nuclphysbps.2004.09.003.

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28

Kawamura, H., J. Kodaira, H. Shimizu y K. Tanaka. "Soft Gluon Effects in Transversely Polarized Drell-Yan Process". Nuclear Physics B - Proceedings Supplements 135 (octubre de 2004): 19–23. http://dx.doi.org/10.1016/j.nuclphysbps.2004.09.004.

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29

Gehrmann, T. "QCD corrections to the longitudinally polarized Drell-Yan process". Nuclear Physics B 498, n.º 1-2 (agosto de 1997): 245–66. http://dx.doi.org/10.1016/s0550-3213(97)00271-x.

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30

Kumano, S. "Structure functions in polarized proton-deuteron Drell-Yan processes". Nuclear Physics B - Proceedings Supplements 79, n.º 1-3 (octubre de 1999): 629–31. http://dx.doi.org/10.1016/s0920-5632(99)00804-x.

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31

Weber, Alexander. "Soft gluon resummations for polarized Drell-Yan dimuon production". Nuclear Physics B 382, n.º 1 (agosto de 1992): 63–96. http://dx.doi.org/10.1016/0550-3213(92)90079-q.

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32

Dressler, B., K. Goeke, M. V. Polyakov, P. Schweitzer, M. Strikman y C. Weiss. "Polarized antiquark flavor asymmetry in Drell–Yan pair production". European Physical Journal C 18, n.º 4 (enero de 2001): 719–22. http://dx.doi.org/10.1007/s100520100567.

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33

Lorenzon, Wolfgang. "Opportunities with Polarized Hadron Beams". International Journal of Modern Physics: Conference Series 40 (enero de 2016): 1660108. http://dx.doi.org/10.1142/s2010194516601083.

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Spin physics at future hadron facilities provide unique opportunities for the study of QCD well beyond those available at existing facilities. Opportunities with polarized protons in the Fermilab Main Injector are discussed that encompass polarized Drell-Yan scattering of unprecedented precision and also enable measurements of transversity, helicty and other transverse momentum dependent distributions. Forthcoming measurements at COMPASS-II that aim to test fundamental predictions of non-perturbative QCD, and complementary studies at RHIC-Spin that address, among others, open puzzles such as the sharing of the nucleon spin among its constituents are also discussed.
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34

Sandacz, A. "Program of COMPASS-II at CERN". International Journal of Modern Physics: Conference Series 37 (enero de 2015): 1560063. http://dx.doi.org/10.1142/s2010194515600630.

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COMPASS collaboration has started in 2012 a five-year program of new measurements, which are outlined in the 'COMPASS-II' proposal. The two new major projects of the proposal are measurements of polarized Drell-Yan process in π- scattering off transversely polarized protons and studies of GPDs via measurements of Deeply Virtual Compton Scattering and Hard Exclusive Meson Production in muon scattering off a liquid hydrogen target. In addition, high statistics SIDSI measurements with muon beams and a study of charged pion and kaon polarizabilities via Primakoff reactions with hadron beams are also foreseen as a part of this program.
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35

Aleshko, A., E. Boos y V. Bunichev. "Study of the Drell-Yan process with the pair-production of polarized tau leptons in collisions of polarized proton beams". EPJ Web of Conferences 222 (2019): 03021. http://dx.doi.org/10.1051/epjconf/201922203021.

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The new method for studying polarized parton distribution functions via the Drell-Yan process with tau production is proposed. The hadronic decay of tau to single charged pi-meson and neutrino is utilised for determination of the polarization state of the tau-lepton. The key feature of our approach is that we do not sum over the polarizations states of tau, but preserve this information through energies ofpions produced in corresponding decays. The new method in addition to existing ones should improve the accuracy of measurements of polarized structure functions of hadrons. In the current work, the feasibility of such an approach is assessed through numerical simulations.
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36

Kawamura, H., J. Kodaira y K. Tanaka. "Transversely Polarized Drell-Yan Process and Soft Gluon Resummation in QCD". Progress of Theoretical Physics 118, n.º 4 (1 de octubre de 2007): 581–656. http://dx.doi.org/10.1143/ptp.118.581.

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37

Koike, Yuji. "Twist-3 effects in polarized Drell-Yan and semi-inclusive DIS". Nuclear Physics B - Proceedings Supplements 79, n.º 1-3 (octubre de 1999): 626–28. http://dx.doi.org/10.1016/s0920-5632(99)00803-8.

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38

Hatsuda, Tetsuo. "Tensor Charge of the Nucleon on a Lattice". Australian Journal of Physics 50, n.º 1 (1997): 205. http://dx.doi.org/10.1071/p96030.

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The tensor charge of the nucleon, which will be measured in Drell-Yan processes in polarized proton–proton collisions at the RHIC, is studied in a quenched lattice QCD simulation. On the 163 × 20 lattice with β = 5·7, connected parts of the tensor charge are determined with small statistical error, while the disconnected parts are found to be small with relatively large error bars. The flavour-singlet tensor charge (δΣ = du + δd + δs) is not suppressed, as opposed to the flavour-singlet axial charge (ΔΣ = Δu + Δd + Δs).
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39

Kawamura, H., J. Kodaira, H. Shimizu y K. Tanaka. "The Dilepton QT Spectrum in Transversely Polarized Drell-Yan Process in QCD". Progress of Theoretical Physics 115, n.º 3 (1 de marzo de 2006): 667–72. http://dx.doi.org/10.1143/ptp.115.667.

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40

Kanazawa, Y., Yuji Koike y N. Nishiyama. "ALT in the polarized Drell-Yan process at RHIC and HERA energies". Physics Letters B 430, n.º 1-2 (junio de 1998): 195–202. http://dx.doi.org/10.1016/s0370-2693(98)00516-4.

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41

Kumano, S. y M. Miyama. "Proton-deuteron asymmetry in Drell–Yan processes and polarized light-antiquark distributions". Physics Letters B 479, n.º 1-3 (abril de 2000): 149–55. http://dx.doi.org/10.1016/s0370-2693(00)00308-7.

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42

Hoodbhoy, Pervez y Xiangdong Ji. "Twist-four distributions in a transversely polarized nucleon and the Drell-Yan process". Physical Review D 50, n.º 7 (1 de octubre de 1994): 4429–35. http://dx.doi.org/10.1103/physrevd.50.4429.

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43

Koike, Yuji, Kazuhiro Tanaka y Shinsuke Yoshida. "Drell–Yan double-spin asymmetry ALT in polarized pp¯ collisions: Wandzura–Wilczek contribution". Physics Letters B 668, n.º 4 (octubre de 2008): 286–92. http://dx.doi.org/10.1016/j.physletb.2008.08.049.

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44

Yamanishi, T., H. Kitagawa y Y. Sakemi. "Direct measurement of /Δ using polarized Drell-Yan processes on meson-nucleon collisions". Nuclear Physics A 721 (junio de 2003): C348—C351. http://dx.doi.org/10.1016/s0375-9474(03)01066-2.

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45

van Neerven, W. L. "NLO corrections to the polarized Drell-Yan cross section in proton-proton collisions". Nuclear Physics B - Proceedings Supplements 116 (marzo de 2003): 198–201. http://dx.doi.org/10.1016/s0920-5632(03)80169-x.

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46

Martin, O., A. Schäfer, M. Stratmann y W. Vogelsang. "Soffer’s inequality and the transversely polarized Drell-Yan process at next-to-leading order". Physical Review D 57, n.º 5 (1 de marzo de 1998): 3084–90. http://dx.doi.org/10.1103/physrevd.57.3084.

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47

Klein, Andi. "Measuring the Sea Quark Sivers Asymmetry: The E1039 Experiment at Fermilab". International Journal of Modern Physics: Conference Series 37 (enero de 2015): 1560064. http://dx.doi.org/10.1142/s2010194515600642.

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One of the continuing puzzles in QCD is the origin of the nucleon spin. All of the existing experimental data suggest that the contributions from the quark and gluon spins account only for about 50% of the nucleon spin. In order to account for the remaining 50%, one has to include the orbital angular momentum of the quarks and gluons. One way to establish if quarks carry significant angular momentum, is to perform a measurement of the Sivers function, which describes the correlation of the spin direction of the nucleon with the transverse momentum of the quark. We will describe the E1039 experiment at Fermilab, which will measure the Sivers asymmetry of the sea quarks via the Drell-Yan process, using a 120 GeV unpolarized proton beam on a transversely polarized NH 3 target.
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48

AGAEV, SHAHIN S. "VECTOR MESON-HADRON COLLISIONS: LARGE INVARIANT MASS AND TRANSVERSE MOMENTUM LEPTON PAIR PRODUCTION". International Journal of Modern Physics A 09, n.º 29 (20 de noviembre de 1994): 5077–95. http://dx.doi.org/10.1142/s0217751x94002053.

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In the framework of factorized perturbative QCD, higher twist mesonic binding effects in lepton pair production in vector meson-hadron collisions are investigated. A general expression for the higher twist contributions is derived. As an example, these contributions are calculated in the case of the ρ meson-proton collision and comparisons are made to leading twist ones. It is shown that the higher twist contributions induced by a transversely polarized ρT meson are large for all values of the dilepton transverse momentum pT (2 GeV≤pT≤6 GeV). In the kinematic regimes τ=Q2/S→1 or xF→1, the higher twist corrections induced by both ρT and ρL exceed considerably the leading ones. The Drell-Yan processes with dilepton rapidity y>0 are especially preferable for the observation of these effects.
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49

Andrieux, V., A. Berlin, N. Doshita, M. Finger, M. Finger, F. Gautheron, N. Horikawa et al. "The large COMPASS polarized solid ammonia target for Drell–Yan measurements with a pion beam". Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 1025 (febrero de 2022): 166069. http://dx.doi.org/10.1016/j.nima.2021.166069.

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50

Kawamura, Hiroyuki, Jiro Kodaira y Kazuhiro Tanaka. "Double-spin asymmetries for small-QT Drell–Yan pair production in transversely polarized pp¯ collisions". Physics Letters B 662, n.º 2 (abril de 2008): 139–49. http://dx.doi.org/10.1016/j.physletb.2008.02.056.

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