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Title: Measurement of Single Muons at Forward Rapidity in p+p Collisions at sqrt(s) = 200 GeV and Implications for Charm Production

Abstract

Muon production at forward rapidity (1.5{le}|eta|{le}1.8) has been measured by the PHENIX experiment over the transverse momentum range 1{le}p{sub T}{le}3 GeV/c in sqrt(s)=200 GeV p+p collisions at the Relativistic Heavy Ion Collider. After statistically subtracting contributions from light hadron decays an excess remains which is attributed to the semileptonic decays of hadrons carrying heavy flavor, i.e. charm quarks or, at high p{sub T}, bottom quarks. The resulting muon spectrum from heavy flavor decays is compared to PYTHIA and a next-to-leading-order perturbative QCD calculation. PYTHIA is used to determine the charm quark spectrum that would produce the observed muon excess. The corresponding differential cross section for charm quark production at forward rapidity is determined to be d{sigma}{sub c{bar c}}/dy|y=1.6=0.243{+-}0.013(stat.){+-}0.105(data syst.)((+0.049)/(-0.087))(PYTHIA syst.) mb.

Authors:
 [1];  [2];  [2];  [2];  [2];  [3];  [2];  [2];  [4]
  1. Brookhaven National Laboratory (BNL)
  2. ORNL
  3. University of Tennessee, Knoxville (UTK)
  4. The
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
932177
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review D; Journal Volume: 76
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 74 ATOMIC AND MOLECULAR PHYSICS; DIFFERENTIAL CROSS SECTIONS; HADRONS; HEAVY IONS; MUONS; PARTICLE RAPIDITY; PRODUCTION; QUANTUM CHROMODYNAMICS; QUARKS; SEMILEPTONIC DECAY; TRANSVERSE MOMENTUM

Citation Formats

Adler, S. S., Awes, Terry C, Cianciolo, Vince, Read Jr, Kenneth F, Silvermyr, David O, Sorensen, Soren P, Stankus, Paul W, Young, Glenn R, and PHENIX, Collaboration. Measurement of Single Muons at Forward Rapidity in p+p Collisions at sqrt(s) = 200 GeV and Implications for Charm Production. United States: N. p., 2007. Web. doi:10.1103/PhysRevD.76.092002.
Adler, S. S., Awes, Terry C, Cianciolo, Vince, Read Jr, Kenneth F, Silvermyr, David O, Sorensen, Soren P, Stankus, Paul W, Young, Glenn R, & PHENIX, Collaboration. Measurement of Single Muons at Forward Rapidity in p+p Collisions at sqrt(s) = 200 GeV and Implications for Charm Production. United States. doi:10.1103/PhysRevD.76.092002.
Adler, S. S., Awes, Terry C, Cianciolo, Vince, Read Jr, Kenneth F, Silvermyr, David O, Sorensen, Soren P, Stankus, Paul W, Young, Glenn R, and PHENIX, Collaboration. Mon . "Measurement of Single Muons at Forward Rapidity in p+p Collisions at sqrt(s) = 200 GeV and Implications for Charm Production". United States. doi:10.1103/PhysRevD.76.092002.
@article{osti_932177,
title = {Measurement of Single Muons at Forward Rapidity in p+p Collisions at sqrt(s) = 200 GeV and Implications for Charm Production},
author = {Adler, S. S. and Awes, Terry C and Cianciolo, Vince and Read Jr, Kenneth F and Silvermyr, David O and Sorensen, Soren P and Stankus, Paul W and Young, Glenn R and PHENIX, Collaboration},
abstractNote = {Muon production at forward rapidity (1.5{le}|eta|{le}1.8) has been measured by the PHENIX experiment over the transverse momentum range 1{le}p{sub T}{le}3 GeV/c in sqrt(s)=200 GeV p+p collisions at the Relativistic Heavy Ion Collider. After statistically subtracting contributions from light hadron decays an excess remains which is attributed to the semileptonic decays of hadrons carrying heavy flavor, i.e. charm quarks or, at high p{sub T}, bottom quarks. The resulting muon spectrum from heavy flavor decays is compared to PYTHIA and a next-to-leading-order perturbative QCD calculation. PYTHIA is used to determine the charm quark spectrum that would produce the observed muon excess. The corresponding differential cross section for charm quark production at forward rapidity is determined to be d{sigma}{sub c{bar c}}/dy|y=1.6=0.243{+-}0.013(stat.){+-}0.105(data syst.)((+0.049)/(-0.087))(PYTHIA syst.) mb.},
doi = {10.1103/PhysRevD.76.092002},
journal = {Physical Review D},
number = ,
volume = 76,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}