Header

UZH-Logo

Maintenance Infos

Measurement of the inelastic cross section in proton–lead collisions at $\sqrt{^{s}NN}$ = 5.02 TeV


CMS Collaboration; Canelli, F; Chiochia, V; Kilminster, B; Robmann, P; et al (2016). Measurement of the inelastic cross section in proton–lead collisions at $\sqrt{^{s}NN}$ = 5.02 TeV. Physical review. B, 759:641-662.

Abstract

The inelastic hadronic cross section in proton–lead collisions at a centre-of-mass energy per nucleon pair of 5.02 TeV is measured with the CMS detector at the LHC. The data sample, corresponding to an integrated luminosity of L=12.6±0.4 nb$^{−1}$ , has been collected with an unbiased trigger for inclusive particle production. The cross section is obtained from the measured number of proton–lead collisions with hadronic activity produced in the pseudorapidity ranges 3<η<5 and/or −5<η<−3 , corrected for photon-induced contributions, experimental acceptance, and other instrumental effects. The inelastic cross section is measured to be $σ_{inel}(pPb)$=2061±3(stat)±34(syst)±72(lumi) mb . Various Monte Carlo generators, commonly used in heavy ion and cosmic ray physics, are found to reproduce the data within uncertainties. The value of $σ_{inel}(pPb)$ is compatible with that expected from the proton–proton cross section at 5.02 TeV scaled up within a simple Glauber approach to account for multiple scatterings in the lead nucleus, indicating that further net nuclear corrections are small.

Abstract

The inelastic hadronic cross section in proton–lead collisions at a centre-of-mass energy per nucleon pair of 5.02 TeV is measured with the CMS detector at the LHC. The data sample, corresponding to an integrated luminosity of L=12.6±0.4 nb$^{−1}$ , has been collected with an unbiased trigger for inclusive particle production. The cross section is obtained from the measured number of proton–lead collisions with hadronic activity produced in the pseudorapidity ranges 3<η<5 and/or −5<η<−3 , corrected for photon-induced contributions, experimental acceptance, and other instrumental effects. The inelastic cross section is measured to be $σ_{inel}(pPb)$=2061±3(stat)±34(syst)±72(lumi) mb . Various Monte Carlo generators, commonly used in heavy ion and cosmic ray physics, are found to reproduce the data within uncertainties. The value of $σ_{inel}(pPb)$ is compatible with that expected from the proton–proton cross section at 5.02 TeV scaled up within a simple Glauber approach to account for multiple scatterings in the lead nucleus, indicating that further net nuclear corrections are small.

Statistics

Citations

Altmetrics

Downloads

8 downloads since deposited on 09 Jan 2017
8 downloads since 12 months
Detailed statistics

Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2016
Deposited On:09 Jan 2017 09:12
Last Modified:21 May 2017 05:35
Publisher:American Physical Society
ISSN:2469-9950
Publisher DOI:https://doi.org/10.1016/j.physletb.2016.06.027

Download

Preview Icon on Download
Preview
Content: Accepted Version
Filetype: PDF
Size: 436kB
View at publisher
Preview Icon on Download
Preview
Content: Published Version
Filetype: PDF
Size: 811kB
Licence: Creative Commons: Attribution 4.0 International (CC BY 4.0)