Measurement of the continuum of dimuons produced in high-energy proton-nucleus collisions

Ito, A. S.; Fisk, R. J.; Jöstlein, H.; Kaplan, Daniel M.; Herb, S. W.; Hom, D. C.; Lederman, Leon M.; Snyder, H. D.; Yoh, J.; Brown, Bruce; Brown, C. N.; Innes, W. R.; Kephart, R.; Ueno, K.; Yamanouchi, T.

doi:10.1103/physrevd.23.604

Cited by 169 publications

(142 citation statements)

References 62 publications

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“…[56,57,77,78]. We used data sets from the E288 experiment [79] [80], extracted from the collision of a proton beam with an energy of 800 GeV ( √ s = 38.8 GeV) on a copper fixed target. The explored Q values are higher compared to the SIDIS case, as can be seen in table 3.…”

Section: Low-energy Drell-yan Datamentioning

confidence: 99%

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Extraction of partonic transverse momentum distributions from semi-inclusive deep-inelastic scattering, Drell-Yan and Z-boson production

Bacchetta

Delcarro

Pisano

et al. 2017

J. High Energ. Phys.

217

239

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We present an extraction of unpolarized partonic transverse momentum distributions (TMDs) from a simultaneous fit of available data measured in semi-inclusive deep-inelastic scattering, Drell-Yan and Z boson production. To connect data at different scales, we use TMD evolution at next-to-leading logarithmic accuracy. The analysis is restricted to the low-transverse-momentum region, with no matching to fixed-order calculations at high transverse momentum. We introduce specific choices to deal with TMD evolution at low scales, of the order of 1 GeV 2 . This could be considered as a first attempt at a global fit of TMDs.

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Section: Low-energy Drell-yan Datamentioning

confidence: 99%

“…As suggested in ref. [79], we consider the target nuclei as an incoherent ensemble composed 40% by protons and 60% by neutrons.…”

Section: Low-energy Drell-yan Datamentioning

confidence: 99%

Extraction of partonic transverse momentum distributions from semi-inclusive deep-inelastic scattering, Drell-Yan and Z-boson production

Bacchetta

Delcarro

Pisano

et al. 2017

J. High Energ. Phys.

217

239

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“…2) (top), (6.5) (middle), (6.12) (bottom) at NNLO. Here, the kinematics bin-integration, etc., is for Drell-Yan process measured at E288 experiment at E beam = 200GeV and Q = 6 − 7GeV [45].…”

Section: The Tmd Cross-sections Using the Optimal Tmd Distributionsmentioning

confidence: 99%

Systematic analysis of double-scale evolution

Scimemi

Vladimirov

2018

J. High Energ. Phys.

164

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Often the factorization of differential cross sections results in the definition of fundamental hadronic functions/distributions which have a double-scale evolution, as provided by a pair of coupled equations. Typically, the two scales are the renormalization and rapidity scales. The two-dimensional structure of their evolution is the object of the present study. In order to be more specific, we consider the case of the transverse momentum dependent distributions (TMD). Nonetheless, most of our findings can be used with other double-scale parton distributions. On the basis of the two-dimensional structure of TMD evolution, we formulate the general statement of the ζ-prescription introduced in [1], and we define an optimal TMD distribution, which is a scaleless model-independent universal non-perturbative function. Within this formulation the non-perturbative definition of the distribution is disentangled from the evolution, which clarifies the separation of perturbative and non-perturbative effects in the phenomenology. A significant part of this work is devoted to the study of the effects of truncation of perturbation theory on the double-scale evolution. We show that within truncated perturbation theory the solution of evolution equations is ambiguous and this fact generates extra uncertainties within the resummed cross-section. The alternatives to bypass this issue are discussed. Finally, we discuss the sources and distribution of the scale variation uncertainties.

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“…While there were indications ofd =ū from Drell-Yan data in the early 1980's [47] it was observation of a violation of the Gottfried Sum Rule [48] in muon DIS by the New Muon Collaborations [49,50] that forced this belief to be reconsidered. Because of its sensitivity to the antiquark distributions Ellis and Stirling suggested [51] using Drell-Yan as a probe of the light quark flavor asymmetry with hydrogen and deuterium targets.…”

Section: Isospin Symmetry Of the Light Quark Seamentioning

confidence: 99%

“…In these models, virtual pion contributions to nuclear structure functions were expected to lead to sizable increases in sea distributions of the nuclei compared with deuterium [75,76,77]. Early Drell-Yan studies at both CERN [78,79] and Fermilab [47] lacked the statistical sensitivity to observe the expected effects. In 1990, measurements by Fermilab E772 [54] found that the expected enhancement was [54].…”

Section: Antiquark Distributions Of Nucleimentioning

confidence: 99%

Exploring the partonic structure of hadrons through the Drell–Yan process

Reimer¹

2007

J. Phys. G: Nucl. Part. Phys.

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Abstract. The Drell-Yan process is a standard tool for probing the partonic structure of hadrons.Since the process proceeds through a quark-antiquark annihilation, Drell-Yan scattering possesses a unique ability to selectively probe sea distributions. This review examines the application of Drell-Yan scattering to elucidating the flavor asymmetry of the nucleon's sea and nuclear modifications to the sea quark distributions in unpolarized scattering. Polarized beams and targets add an exciting new dimension to Drell-Yan scattering. In particular, the two initial-state hadrons give Drell-Yan sensitivity to chirally-odd transversity distributions.PACS numbers: 14.20. Dh, 13.88.+e, 12.75.Cs Submitted to: J. Phys. G: Nucl. Phys. The Production of Massive Lepton PairsSidney Drell and Tung-Mow Yan first proposed [1, 2] the process that now bears their names to explain a continuum of massive lepton-antilepton pairs (dileptons) that had been observed by Christenson et al. in proton-uranium collisions at the Brookhaven AGS [3,4]. The experiment was conducted to probe the large momentum transfer region with time-like photons to complement space-like measurements from lepton-proton deep inelastic scattering (DIS) data and to search for new resonances. A distinct feature of these data was the rapid decrease in cross section as the mass of the dilepton increased, as reproduced in figure 1. While there were many plausible explanations of this spectra, it was the mechanism proposed by S. Drell and T.-M. Yan which described the spectra in terms of the (then very new) parton model of Feynman [5] that was eventually accepted. In this description, the dilepton cross section and its rapid decrease with increasing dilepton mass was explained in terms of the annihilation of a parton from one of the interacting hadrons with an anti-parton from the other hadron. The steeply falling cross section was due the paucity of large-x partons that are necessary to reach high mass.

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Measurement of the continuum of dimuons produced in high-energy proton-nucleus collisions

Cited by 169 publications

References 62 publications

Extraction of partonic transverse momentum distributions from semi-inclusive deep-inelastic scattering, Drell-Yan and Z-boson production

Extraction of partonic transverse momentum distributions from semi-inclusive deep-inelastic scattering, Drell-Yan and Z-boson production

Systematic analysis of double-scale evolution

Exploring the partonic structure of hadrons through the Drell–Yan process

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