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Title: Constituent quarks and systematic errors in mid-rapidity charged multiplicity dNch/dη distributions

Journal Article · · Modern Physics Letters A
 [1]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States). Physics Dept.
+ Show Author Affiliations

Centrality definition in A + A collisions at colliders such as RHIC and LHC suffers from a correlated systematic uncertainty caused by the efficiency of detecting a p + p collision (50 ± 5% for PHENIX at RHIC). In A + A collisions where centrality is measured by the number of nucleon collisions, Ncoll, or the number of nucleon participants, Npart, or the number of constituent quark participants, Nqp, the error in the efficiency of the primary interaction trigger (Beam–Beam Counters) for a p + p collision leads to a correlated systematic uncertainty in Npart, Ncoll or Nqp which reduces binomially as the A + A collisions become more central. If this is not correctly accounted for in projections of A + A to p + p collisions, then mistaken conclusions can result. Finally, a recent example is presented in whether the mid-rapidity charged multiplicity per constituent quark participant d(Nch/dη)/Nqp in Au + Au at RHIC was the same as the value in p + p collisions.

Research Organization:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP)
Grant/Contract Number:
SC0012704
OSTI ID:
1425125
Report Number(s):
BNL-200047-2018-JAAM
Journal Information:
Modern Physics Letters A, Vol. 33, Issue 01; ISSN 0217-7323
Publisher:
World Scientific PublishingCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 3 works
Citation information provided by
Web of Science

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Cited By (1)

Longitudinal correlations from fluctuating strings in Pb-Pb, p-Pb, and p-p collisions text January 2019

Figures / Tables (10)

Figure 1(p. 4)figure Figure 1
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Table 1(p. 12)table Table 1

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Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS