Polarized Drell-Yan measurements with the Fermilab Main Injector

Isenhower, L.; Tadepalli, A. S.; Arrington, J.; Gilman, R.; Dutta, C.; Diefenthäler, Juliana Martins; Miyachi, Y.; Reimer, P. E.; Beise, E. J.; Makins, N.; Watson, S.; Miyasaka, S.; Dannowitz, B. P.; Towell, R. S.; Kinney, E.; Huang, J.; Shibata, T. A.; McClellan, Randall Evan; Jackson, H. E.; Fassi, L. El; Ransome, R.; Qu, Zhijie; Christian, D. C.; Hague, T.; Goto, Y.; Raymond, R. S.; Geesaman, D. F.; Nakano, K.; Kerns, Bryan; Sanftl, F.; Sawada, S.; McGaughey, P. L.; J, Hafidi; Aidala, C.; Lorenzon, W.; Brown, C. N.; Holt, R. J.; Jiang, X.; Rubin, J.; Liu, M.; Nakahara, K.

doi:10.2172/1127901

Cited by 9 publications

(19 citation statements)

References 27 publications

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“…In this work we will neglect the Y -term, which means that we will only consider the first term on the r.h.s of Eq. (42).…”

Section: Physical Observables In πN Drell-yan Process Within Tmdmentioning

confidence: 99%

“…QCD predicts that the T-odd PDFs present generalized universality, i.e., the sign of the Sivers function measured in Drell-Yan process should be opposite to its sign measured in SIDIS [16,34,35] process. The verification of this sign change [36][37][38][39][40][41] is one of the most fundamental tests of our understanding of the QCD dynamics and the factorization scheme, and it is also the main pursue of the existing and future Drell-Yan facilities [10,11,[42][43][44][45]. The COMPASS Collaboration has reported the first measurement of the Sivers asymmetry in the pion-induced Drell-Yan process, in which a π − beam was scattered off the transversely polarized NH 3 target [11].…”

Section: Numerical Estimate For the Physical Observables In π-N Drmentioning

confidence: 99%

“…(17) and the leading order C coefficients to perform a global fit on the Sivers function from the experimental data at HERMES [127], COMPASS [128,129], and Jefferson Lab (JLab) [130]. With the extracted Sivers function from SIDIS process at hand, they made predictions for the Sivers asymmetry in Drell-Yan lepton pair and W production at future planned Drell-Yan facilities at COMPASS [10], Fermilab [42,43] and RHIC [44,131], which can be compared to the future experimental measurements to test the sign change of the Sivers functions between SIDIS and Drell-Yan processes. The predictions were presented in Fig.…”

Section: B the Sivers Asymmetrymentioning

confidence: 99%

“…Remarkably, QCD predicts that the sign of the Sivers function changes in SIDIS with respect to the Drell-Yan process [16,34,35]. The verification of this sign change [36][37][38][39][40][41] is one of the most fundamental tests of our understanding of the QCD dynamics and the factorization schemes, and it is also the main pursue of the existing and future Drell-Yan facilities [10,11,[42][43][44][45]. The advantage of the π N Drell-Yan measurement at COMPASS is that almost the same setup [11,46] is used in SIDIS and Drell-Yan processes, which may reduce the uncertainty in the extraction of the Sivers function.…”

Section: Introductionmentioning

confidence: 99%

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π-N Drell-Yan Process in TMD Factorization

Wang

Lü

2019

Advances in High Energy Physics

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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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“…In this work we will neglect the Y -term, which means that we will only consider the first term on the r.h.s of Eq. (42).…”

Section: Physical Observables In πN Drell-yan Process Within Tmdmentioning

confidence: 99%

Section: Numerical Estimate For the Physical Observables In π-N Drmentioning

confidence: 99%

Section: B the Sivers Asymmetrymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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π-N Drell-Yan Process in TMD Factorization

Wang

Lü

2019

Advances in High Energy Physics

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show abstract

“…However, the TMD framework of QCD predicts that the T-odd PDFs present generalized universality, i.e., the sign of the Sivers function measured in Drell-Yan process should be opposite to its sign measured in SIDIS [16][17][18]. The verification of this sign change [19][20][21][22][23][24] is one of the most fundamental tests of our understanding of the QCD dynamics and the factorization scheme, and it is also the main pursue of the existing and future Drell-Yan facilities [25][26][27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Sivers Asymmetry in $\pi N$ Drell-Yan process at COMPASS within TMD factorization

Wang¹,

Fu²,

Xue³

et al. 2019

Proceedings of XXVII International Workshop on Deep-Inelastic Scattering and Related Subjects — PoS(DIS2019)

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We investigate the Sivers asymmetry in the pion-induced single polarized Drell-Yan process in the theoretical framework of the transverse momentum dependent factorization up to next-to-leading logarithmic order of QCD. Within the TMD evolution formalism of parton distribution functions, the recently extracted nonperturbative Sudakov form factor for the pion distribution functions as well as the one for the Sivers function of the proton are applied to numerically estimate the Sivers asymmetry in the π − p Drell-Yan at the kinematics of the COMPASS at CERN. In the low b region, the Sivers function in b-space can be expressed as the convolution of the perturbatively calculable hard coefficients and the corresponding collinear correlation function, of which the Qiu-Sterman function is the most relevant one. The effect of the energy-scale dependence of the Qiu-Sterman function to the asymmetry is also studied. We find that our prediction on the Sivers asymmetries as functions of xp, xπ, xF and q ⊥ is consistent with the recent COMPASS measurement.

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Feasibility Studies for Single Transverse-Spin Asymmetry Measurements at a Fixed-Target Experiment Using the LHC Proton and Lead Beams (AFTER@LHC)

et al. 2017

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The measurement of Single Transverse-Spin Asymmetries, A N , for various quarkonium states and Drell-Yan lepton pairs can shed light on the orbital angular momentum of quarks and gluons, a fundamental ingredient of the proton-spin puzzle. The AFTER@LHC proposal combines a unique kinematic coverage and large luminosities thanks to the Large Hadron Collider beams to deliver precise measurements, complementary to the knowledge provided by collider experiments such as at RHIC. In this paper, we report on sensitivity studies for J/ψ, Υ and Drell-Yan A N done using the performance of LHCb-like or ALICE-like detectors, combined with polarised gaseous hydrogen and helium-3 targets. In particular, such analyses will provide us with new insights and knowledge about transverse-momentum-dependent parton distribution functions for quarks and gluons and on twist-3 collinear matrix elements in the proton and the neutron.

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Polarized Drell-Yan measurements with the Fermilab Main Injector

Cited by 9 publications

References 27 publications

π-N Drell-Yan Process in TMD Factorization

π-N Drell-Yan Process in TMD Factorization

Sivers Asymmetry in $\pi N$ Drell-Yan process at COMPASS within TMD factorization

Feasibility Studies for Single Transverse-Spin Asymmetry Measurements at a Fixed-Target Experiment Using the LHC Proton and Lead Beams (AFTER@LHC)

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