Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Production of b b ¯ at forward rapidity in p+p collisions at s =510 GeV PRODUCTION of b b ¯ at FORWARD RAPIDITY ... ACHARYA U et al..

Acharya, U. ; Oskarsson, Anders LU ; Silvermyr, David LU orcid and Zou, L. (2020) In Physical Review D 102(9).
Abstract
The cross section of bottom quark-antiquark (bb¯) production in p+p collisions at s=510 GeV is measured with the PHENIX detector at the Relativistic Heavy Ion Collider. The results are based on the yield of high mass, like-sign muon pairs measured within the PHENIX muon arm acceptance (1.21 GeV/c, and dimuon mass of 5-10 GeV/c2. The extrapolated total cross section at this energy for bb¯ production is 13.1±0.6 (stat)±1.5 (syst)±2.7 (global) μb. The total cross section is compared to a perturbative quantum chromodynamics calculation and is consistent within uncertainties. The azimuthal opening angle between muon pairs from bb¯ decays and their pT distributions are compared to distributions generated using ps pythia6, which includes... (More)
The cross section of bottom quark-antiquark (bb¯) production in p+p collisions at s=510 GeV is measured with the PHENIX detector at the Relativistic Heavy Ion Collider. The results are based on the yield of high mass, like-sign muon pairs measured within the PHENIX muon arm acceptance (1.21 GeV/c, and dimuon mass of 5-10 GeV/c2. The extrapolated total cross section at this energy for bb¯ production is 13.1±0.6 (stat)±1.5 (syst)±2.7 (global) μb. The total cross section is compared to a perturbative quantum chromodynamics calculation and is consistent within uncertainties. The azimuthal opening angle between muon pairs from bb¯ decays and their pT distributions are compared to distributions generated using ps pythia6, which includes next-to-leading order processes. The azimuthal correlations and pair pT distribution are not very well described by pythia calculations, but are still consistent within uncertainties. Flavor creation and flavor excitation subprocesses are favored over gluon splitting. © 2020 authors. (Less)
Please use this url to cite or link to this publication:
author
; ; and
author collaboration
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review D
volume
102
issue
9
publisher
American Physical Society
external identifiers
  • scopus:85096136290
ISSN
2470-0010
DOI
10.1103/PhysRevD.102.092002
language
English
LU publication?
yes
id
59af02fb-7fb1-4d56-b09f-fcef44735d67
date added to LUP
2020-11-24 14:31:10
date last changed
2023-04-11 00:46:40
@article{59af02fb-7fb1-4d56-b09f-fcef44735d67,
  abstract     = {{The cross section of bottom quark-antiquark (bb¯) production in p+p collisions at s=510 GeV is measured with the PHENIX detector at the Relativistic Heavy Ion Collider. The results are based on the yield of high mass, like-sign muon pairs measured within the PHENIX muon arm acceptance (1.21 GeV/c, and dimuon mass of 5-10 GeV/c2. The extrapolated total cross section at this energy for bb¯ production is 13.1±0.6 (stat)±1.5 (syst)±2.7 (global) μb. The total cross section is compared to a perturbative quantum chromodynamics calculation and is consistent within uncertainties. The azimuthal opening angle between muon pairs from bb¯ decays and their pT distributions are compared to distributions generated using ps pythia6, which includes next-to-leading order processes. The azimuthal correlations and pair pT distribution are not very well described by pythia calculations, but are still consistent within uncertainties. Flavor creation and flavor excitation subprocesses are favored over gluon splitting. © 2020 authors.}},
  author       = {{Acharya, U. and Oskarsson, Anders and Silvermyr, David and Zou, L.}},
  issn         = {{2470-0010}},
  language     = {{eng}},
  number       = {{9}},
  publisher    = {{American Physical Society}},
  series       = {{Physical Review D}},
  title        = {{Production of b b ¯ at forward rapidity in p+p collisions at s =510 GeV PRODUCTION of b b ¯ at FORWARD RAPIDITY ... ACHARYA U et al..}},
  url          = {{http://dx.doi.org/10.1103/PhysRevD.102.092002}},
  doi          = {{10.1103/PhysRevD.102.092002}},
  volume       = {{102}},
  year         = {{2020}},
}