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Title: Measurement of the total cross section from elastic scattering in pp collisions at √s=7 TeV with the ATLAS detector

Abstract

In this study, a measurement of the total $pp$ cross section at the LHC at $$\sqrt{s}=7$$ TeV is presented. In a special run with high-$$\beta^{\star}$$ beam optics, an integrated luminosity of 80 µb -1 was accumulated in order to measure the differential elastic cross section as a function of the Mandelstam momentum transfer variable $t$. The measurement is performed with the ALFA sub-detector of ATLAS. Using a fit to the differential elastic cross section in the |t| range from 0.01 GeV 2 to 0.1 GeV 2 to extrapolate to |t| → 0, the total cross section, σ tot($pp$ → X), is measured via the optical theorem to be: σ tot($pp$ → X) = 95.35 ± 0.38 (stat.) ± 1.25 (exp.) ± 0.37 (extr.) mb, where the first error is statistical, the second accounts for all experimental systematic uncertainties and the last is related to uncertainties in the extrapolation to |t| → 0. In addition, the slope of the elastic cross section at small |t| is determined to be B = 19.73 ± 0.14 (stat.) ± 0.26 (syst.) GeV -2.

Authors:
 [1];  [2];  [3];  [4]
  1. Aix-Marseille Univ. and CNRS/IN2P3, Marseille (France)
  2. Univ. of Oklahoma, Norman, OK (United States)
  3. Academia Sinica, Taipei (Taiwan)
  4. Univ. Paris-Sud and CNRS/IN2P3, Orsay (France). et al.
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States); Argonne National Lab. (ANL), Argonne, IL (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
Contributing Org.:
ATLAS Collaboration
OSTI Identifier:
1197897
Alternate Identifier(s):
OSTI ID: 1172100; OSTI ID: 1222762; OSTI ID: 1222770; OSTI ID: 1223271
Report Number(s):
BNL-107573-2015-JA
Journal ID: ISSN 0550-3213; PII: S0550321314003253; TRN: US1600725
Grant/Contract Number:  
SC00112704; AC02-06CH11357; AC02-05CH11231; AC03-76SF00515
Resource Type:
Published Article
Journal Name:
Nuclear Physics. B
Additional Journal Information:
Journal Volume: 889; Journal Issue: C; Journal ID: ISSN 0550-3213
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Aad, G., Abbott, B., Abdallah, J., and Khalek, S. Abdel. Measurement of the total cross section from elastic scattering in pp collisions at √s=7 TeV with the ATLAS detector. United States: N. p., 2014. Web. doi:10.1016/j.nuclphysb.2014.10.019.
Aad, G., Abbott, B., Abdallah, J., & Khalek, S. Abdel. Measurement of the total cross section from elastic scattering in pp collisions at √s=7 TeV with the ATLAS detector. United States. doi:10.1016/j.nuclphysb.2014.10.019.
Aad, G., Abbott, B., Abdallah, J., and Khalek, S. Abdel. Tue . "Measurement of the total cross section from elastic scattering in pp collisions at √s=7 TeV with the ATLAS detector". United States. doi:10.1016/j.nuclphysb.2014.10.019.
@article{osti_1197897,
title = {Measurement of the total cross section from elastic scattering in pp collisions at √s=7 TeV with the ATLAS detector},
author = {Aad, G. and Abbott, B. and Abdallah, J. and Khalek, S. Abdel},
abstractNote = {In this study, a measurement of the total $pp$ cross section at the LHC at $\sqrt{s}=7$ TeV is presented. In a special run with high-$\beta^{\star}$ beam optics, an integrated luminosity of 80 µb-1 was accumulated in order to measure the differential elastic cross section as a function of the Mandelstam momentum transfer variable $t$. The measurement is performed with the ALFA sub-detector of ATLAS. Using a fit to the differential elastic cross section in the |t| range from 0.01 GeV2 to 0.1 GeV2 to extrapolate to |t| → 0, the total cross section, σtot($pp$ → X), is measured via the optical theorem to be: σtot($pp$ → X) = 95.35 ± 0.38 (stat.) ± 1.25 (exp.) ± 0.37 (extr.) mb, where the first error is statistical, the second accounts for all experimental systematic uncertainties and the last is related to uncertainties in the extrapolation to |t| → 0. In addition, the slope of the elastic cross section at small |t| is determined to be B = 19.73 ± 0.14 (stat.) ± 0.26 (syst.) GeV-2.},
doi = {10.1016/j.nuclphysb.2014.10.019},
journal = {Nuclear Physics. B},
number = C,
volume = 889,
place = {United States},
year = {2014},
month = {10}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1016/j.nuclphysb.2014.10.019

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