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.

Khachatryan, V., Sirunyan, A., Tumasyan, A., Adam, W., Asilar, E., Bergauer, T., et al. (2015). Pseudorapidity distribution of charged hadrons in proton–proton collisions at √s=13 TeV. PHYSICS LETTERS. SECTION B, 751, 143-163 [10.1016/j.physletb.2015.10.004].

Pseudorapidity distribution of charged hadrons in proton–proton collisions at √s=13 TeV

BRIANZA, LUCA;DINARDO, MAURO EMANUELE;FIORENDI, SARA;GENNAI, STEFANO;GEROSA, RAFFAELE ANGELO;GHEZZI, ALESSIO;GOVONI, PIETRO;MANZONI, RICCARDO ANDREA;MARZOCCHI, BADDER;MORONI, LUIGI;PAGANONI, MARCO;RAGAZZI, STEFANO;TABARELLI DE FATIS, TOMMASO;Branca, A.;De Guio, F.;Lucchini, M. T.;Massironi, A.;
2015

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.
Articolo in rivista - Articolo scientifico
13 TeV; CMS; Hadrons; Physics; Proton–proton; Spectra;
English
2015
751
143
163
none
Khachatryan, V., Sirunyan, A., Tumasyan, A., Adam, W., Asilar, E., Bergauer, T., et al. (2015). Pseudorapidity distribution of charged hadrons in proton–proton collisions at √s=13 TeV. PHYSICS LETTERS. SECTION B, 751, 143-163 [10.1016/j.physletb.2015.10.004].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/153376
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