# Pseudorapidity distribution of charged hadrons in proton-proton collisions at sqrt(s) = 13 TeV

Abstract : The pseudorapidity distribution of charged hadrons in pp collisions at sqrt(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 (abs(eta)<2) using both hit pairs and reconstructed tracks. For central pseudorapidities (abs(eta)<0.5), the charged-hadron multiplicity density is dN/d(eta)[charged,abs(eta) < 0.5] = 5.49 +/- 0.01 (stat) +/- 0.17 (sys), 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.
Type de document :
Article dans une revue
Physics Letters B, Elsevier, 2015, 751, pp.143-163. 〈10.1016/j.physletb.2015.10.004〉

http://hal.in2p3.fr/in2p3-01179198
Contributeur : Sylvie Flores <>
Soumis le : mercredi 22 juillet 2015 - 07:03:07
Dernière modification le : jeudi 10 mai 2018 - 02:00:25

### Citation

V. Khachatryan, M. Besançon, F. Couderc, M. Dejardin, D. Denegri, et al.. Pseudorapidity distribution of charged hadrons in proton-proton collisions at sqrt(s) = 13 TeV. Physics Letters B, Elsevier, 2015, 751, pp.143-163. 〈10.1016/j.physletb.2015.10.004〉. 〈in2p3-01179198〉

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