Pseudorapidity distribution of charged hadrons in proton-proton collisions at root s=13TeVopen access
- Authors
- Khachatryan, V; Sirunyan, AM; Tumasyan, A; Adam, W; Asilar, E; Bergauer, T; Brandstetter, J; Brondolin, E; Dragicevic, M; Kim, Tae Jeong
- Issue Date
- Dec-2015
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- CMS; Physics; Proton-proton; 13 TeV; Hadrons; Spectra
- Citation
- PHYSICS LETTERS B, v.751, pp.143 - 163
- Indexed
- SCIE
SCOPUS
- Journal Title
- PHYSICS LETTERS B
- Volume
- 751
- Start Page
- 143
- End Page
- 163
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/142858
- DOI
- 10.1016/j.physletb.2015.10.004
- ISSN
- 0370-2693
- Abstract
- The pseudorapidity distribution of charged hadrons in pp collisions at root s = 13 TeV is measured using a data sample obtained with the CMS detector, operated at zero magnetic field, at the CERN LHC. The yield of primary charged long-lived hadrons produced in inelastic pp collisions is determined in the central region of the CMS pixel detector (vertical bar eta vertical bar ˂ 2) using both hit pairs and reconstructed tracks. For central pseudorapidities (vertical bar eta vertical bar ˂ 0.5), the charged-hadron multiplicity density is dN(ch)/d eta vertical bar(vertical bar eta vertical bar) ˂ 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.
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