Volume 101, Number 2, February 2013
|Number of page(s)||7|
|Published online||05 February 2013|
Measurement of proton-proton inelastic scattering cross-section at
1a Institute of Physics of the Academy of Sciences of the Czech Republic - Praha, Czech Republic, EU
1b Czech Technical University - Praha, Czech Republic, EU
2 National Institute of Chemical Physics and Biophysics NICPB - Tallinn, Estonia, EU
3a Helsinki Institute of Physics - Helsinki, Finland, EU
3b Department of Physics, University of Helsinki - Helsinki, Finland, EU
4 MTA Wigner Research Center, RMKI - Budapest, Hungary, EU
5a INFN Sezione di Bari - Bari, Italy, EU
5b Dipartimento Interateneo di Fisica di Bari - Bari, Italy, EU
6a Sezione INFN di Genova - Genova, Italy, EU
6b Università degli Studi di Genova - Genova, Italy, EU
7a INFN Sezione di Pisa - Pisa, Italy, EU
7b Università degli Studi di Siena and Gruppo Collegato INFN di Siena - Siena, Italy, EU
8 CERN - Geneva, Switzerland
9 Case Western Reserve University, Deptartment of Physics - Cleveland, OH, USA
10 Penn State University, Department of Physics - University Park, PA, USA
Received: 7 October 2012
Accepted: 21 January 2013
The TOTEM experiment at the LHC has measured the inelastic proton-proton cross-section at in a β* = 90 m run with low inelastic pile-up. The measurement was based on events with at least one charged particle in the T2 telescope acceptance of 5.3 < |η| < 6.5 in pseudorapidity. Combined with data from the T1 telescope, covering 3.1 < |η| < 4.7, the cross-section for inelastic events with at least one |η| ⩽ 6.5 final-state particle was determined to be (70.5 ± 2.9) mb. This cross-section includes all central diffractive events of which maximally 0.25 mb is estimated to escape the detection of the telescopes. Based on models for low mass diffraction, the total inelastic cross-section was deduced to be (73.7 ± 3.4) mb. An upper limit of 6.31 mb at 95% confidence level on the cross-section for events with diffractive masses below 3.4 GeV was obtained from the difference between the overall inelastic cross-section obtained by TOTEM using elastic scattering and the cross-section for inelastic events with at least one |η| ⩽ 6.5 final-state particle.
PACS: 13.60.Hb – Total and inclusive cross sections (including deep-inelastic processes)
© CERN for the benefit of the TOTEM Collaboration
Copyright © EPLA, 2013 Copyright CERN for the benefit of the TOTEM Collaboration. Published by the EPLA under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
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