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Drell-Yan phenomenology in the color dipole picture revisited

Flach Basso, Eduardo LU ; Goncalves, Victor P. LU ; Nemchik, Jan; Pasechnik, Roman LU and Šumbera, Michal (2016) In Physical Review D (Particles, Fields, Gravitation and Cosmology) 93(3).
Abstract

An extensive phenomenological study of the Drell-Yan (DY) process in pp collisions at various energies is performed in the color dipole framework. Besides previously studied γ∗ production we also include the Z0 contribution relevant at large dilepton invariant masses. We investigate the DY cross section differential in invariant mass, rapidity and transverse momentum of the dilepton pair in pp collisions at the RHIC and LHC. We consider three different phenomenological models for the dipole cross section and find a reasonable agreement with the available data. As a further test of the color dipole formalism, we also study the correlation function in azimuthal angle between the dilepton pair and a forward pion Δφ for different energies,... (More)

An extensive phenomenological study of the Drell-Yan (DY) process in pp collisions at various energies is performed in the color dipole framework. Besides previously studied γ∗ production we also include the Z0 contribution relevant at large dilepton invariant masses. We investigate the DY cross section differential in invariant mass, rapidity and transverse momentum of the dilepton pair in pp collisions at the RHIC and LHC. We consider three different phenomenological models for the dipole cross section and find a reasonable agreement with the available data. As a further test of the color dipole formalism, we also study the correlation function in azimuthal angle between the dilepton pair and a forward pion Δφ for different energies, dilepton rapidities and invariant masses. The characteristic double-peak structure of the correlation function around Δφ≃π found for very forward pions and low-mass dilepton pairs is sensitive to the saturation effects and can be tested by future DY measurements in pp collisions.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review D (Particles, Fields, Gravitation and Cosmology)
volume
93
issue
3
publisher
American Physical Society
external identifiers
  • Scopus:84959492679
ISSN
1550-7998
DOI
10.1103/PhysRevD.93.034023
language
English
LU publication?
yes
id
567b9bfd-53fc-4fea-809b-a7d298f5d277
date added to LUP
2016-07-14 14:17:42
date last changed
2016-11-03 09:30:36
@misc{567b9bfd-53fc-4fea-809b-a7d298f5d277,
  abstract     = {<p>An extensive phenomenological study of the Drell-Yan (DY) process in pp collisions at various energies is performed in the color dipole framework. Besides previously studied γ∗ production we also include the Z0 contribution relevant at large dilepton invariant masses. We investigate the DY cross section differential in invariant mass, rapidity and transverse momentum of the dilepton pair in pp collisions at the RHIC and LHC. We consider three different phenomenological models for the dipole cross section and find a reasonable agreement with the available data. As a further test of the color dipole formalism, we also study the correlation function in azimuthal angle between the dilepton pair and a forward pion Δφ for different energies, dilepton rapidities and invariant masses. The characteristic double-peak structure of the correlation function around Δφ≃π found for very forward pions and low-mass dilepton pairs is sensitive to the saturation effects and can be tested by future DY measurements in pp collisions.</p>},
  author       = {Flach Basso, Eduardo and Goncalves, Victor P. and Nemchik, Jan and Pasechnik, Roman and Šumbera, Michal},
  issn         = {1550-7998},
  language     = {eng},
  month        = {02},
  number       = {3},
  publisher    = {ARRAY(0x972c430)},
  series       = {Physical Review D (Particles, Fields, Gravitation and Cosmology)},
  title        = {Drell-Yan phenomenology in the color dipole picture revisited},
  url          = {http://dx.doi.org/10.1103/PhysRevD.93.034023},
  volume       = {93},
  year         = {2016},
}