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Title: Pseudorapidity distribution of charged hadrons in proton-proton collisions at $$\sqrt{s}$$ = 13 TeV

The pseudorapidity distribution of charged hadrons in pp collisions at √s=13 TeV is measured using a data sample obtained with the CMS detector, operated at zero magnetic field, at the CERN LHC. Furthermore, this yield of primary charged long-lived hadrons produced in inelastic pp collisions is determined in the central region of the CMS pixel detector (|η|<2) using both hit pairs and reconstructed tracks. Furthermore, for central pseudorapidities (|η|<0.5), the charged-hadron multiplicity density is dN ch/dη| |η|<0.5=5.49±0.01 (stat) ± 0.17 (syst) , a value obtained by combining the two methods. The result is compared to predictions from Monte Carlo event generators and to similar measurements made at lower collision energies.
Authors:
 [1]
  1. Yerevan Physics Inst. (YerPhI), Yerevan (Armenia). et al.
Publication Date:
Report Number(s):
FERMILAB-PUB-15-329-CMS; CERN-PH-EP-2015-180; CMS-FSQ-15-001
Journal ID: ISSN 0370-2693; arXiv eprint number arXiv:1507.05915; TRN: US1601078
Grant/Contract Number:
AC02-07CH11359
Type:
Published Article
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 751; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Research Org:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Orgs:
CMS Collaboration
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CMS; physics; proton-proton; 13 TeV; Hadrons; spectra
OSTI Identifier:
1223551
Alternate Identifier(s):
OSTI ID: 1221317

Khachatryan, Vardan. Pseudorapidity distribution of charged hadrons in proton-proton collisions at $\sqrt{s}$ = 13 TeV. United States: N. p., Web. doi:10.1016/j.physletb.2015.10.004.
Khachatryan, Vardan. Pseudorapidity distribution of charged hadrons in proton-proton collisions at $\sqrt{s}$ = 13 TeV. United States. doi:10.1016/j.physletb.2015.10.004.
Khachatryan, Vardan. 2015. "Pseudorapidity distribution of charged hadrons in proton-proton collisions at $\sqrt{s}$ = 13 TeV". United States. doi:10.1016/j.physletb.2015.10.004.
@article{osti_1223551,
title = {Pseudorapidity distribution of charged hadrons in proton-proton collisions at $\sqrt{s}$ = 13 TeV},
author = {Khachatryan, Vardan},
abstractNote = {The pseudorapidity distribution of charged hadrons in pp collisions at √s=13 TeV is measured using a data sample obtained with the CMS detector, operated at zero magnetic field, at the CERN LHC. Furthermore, this yield of primary charged long-lived hadrons produced in inelastic pp collisions is determined in the central region of the CMS pixel detector (|η|<2) using both hit pairs and reconstructed tracks. Furthermore, for central pseudorapidities (|η|<0.5), the charged-hadron multiplicity density is dNch/dη||η|<0.5=5.49±0.01 (stat) ± 0.17 (syst) , a value obtained by combining the two methods. The result is compared to predictions from Monte Carlo event generators and to similar measurements made at lower collision energies.},
doi = {10.1016/j.physletb.2015.10.004},
journal = {Physics Letters. Section B},
number = ,
volume = 751,
place = {United States},
year = {2015},
month = {10}
}