Pseudorapidity distribution of charged hadrons in proton–proton collisions at
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.
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- Contributing Organization:
- CMS Collaboration
- Grant/Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1223551
- Alternate ID(s):
- OSTI ID: 1221317
- Report Number(s):
- FERMILAB-PUB-15-329-CMS; CERN-PH-EP-2015-180; CMS-FSQ-15-001; S0370269315007558; PII: S0370269315007558
- Journal Information:
- Physics Letters B, Journal Name: Physics Letters B Vol. 751 Journal Issue: C; ISSN 0370-2693
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- Netherlands
- Language:
- English
Web of Science
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