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. The 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. 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.

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

Sola, V.;Meridiani, P.;AMAPANE, Nicola Carlo;ARGIRO', Stefano;BELLAN, Riccardo;COSTA, Marco;COVARELLI, Roberto;MIGLIORE, Ernesto;MONACO, Vincenzo;OBERTINO, Maria Margherita;ROMERO, Alessandra;SACCHI, Roberto;SOLANO, Ada Maria;
2015-01-01

Abstract

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. The 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. 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.
2015
Inglese
Esperti anonimi
751
143
163
21
http://www.sciencedirect.com/science/journal/03702693
13 TeV; CMS; Hadrons; Physics; Proton-proton; Spectra; Nuclear and High Energy Physics
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Khachatryan, V.; Sirunyan, A.M.; Tumasyan, A.; Adam, W.; Asilar, E.; Bergauer, T.; Brandstetter, J.; Brondolin, E.; Dragicevic, M.; Erö, J.; Flechl, M...espandi
info:eu-repo/semantics/article
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1568893
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