Measurement of the inelastic proton-proton cross-section at √s = 7 TeV with the ATLAS detector

G Aad; B Abbott; J Abdallah; AA Abdelalim; A Abdesselam; O Abdinov; B Abi; M Abolins; H Abramowicz; H Abreu; E Acerbi; BS Acharya; DL Adams; TN Addy; J Adelman; M Aderholz; S Adomeit; P Adragna; T Adye; S Aefsky; JA Aguilar-Saavedra; M Aharrouche; SP Ahlen; F Ahles; A Ahmad; M Ahsan; G Aielli; T Akdogan; TPA Åkesson; G Akimoto; AV Akimov; A Akiyama; MS Alam; MA Alam; S Albrand; M Aleksa; IN Aleksandrov; F Alessandria; C Alexa; G Alexander; G Alexandre; T Alexopoulos; M Alhroob; M Aliev; G Alimonti; J Alison; M Aliyev; PP Allport; SE Allwood-Spiers; J Almond; A Aloisio; R Alon; A Alonso; MG Alviggi; K Amako; P Amaral; C Amelung; VV Ammosov; A Amorim; G Amorøs; N Amram; C Anastopoulos; T Andeen; CF Anders; KJ Anderson; A Andreazza; V Andrei; ML Andrieux; XS Anduaga; A Angerami; F Anghinolfi; N Anjos; A Annovi; A Antonaki; M Antonelli; S Antonelli; A Antonov; J Antos; F Anulli; S Aoun; L Aperio Bella; R Apolle; G Arabidze; I Aracena; Y Arai; ATH Arce; JP Archambault; S Arfaoui; JF Arguin; E Arik; M Arik; AJ Armbruster; O Arnaez; C Arnault; A Artamonov; G Artoni; D Arutinov; S Asai; R Asfandiyarov; S Ask

Journal article

Measurement of the inelastic proton-proton cross-section at √s = 7 TeV with the ATLAS detector

G Aad, B Abbott, J Abdallah, AA Abdelalim, A Abdesselam, O Abdinov, B Abi, M Abolins, H Abramowicz, H Abreu, E Acerbi, BS Acharya, DL Adams, TN Addy, J Adelman, M Aderholz, S Adomeit, P Adragna, T Adye, S Aefsky Show all

Nature Communications | Published : 2011

DOI: 10.1038/ncomms1472

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Abstract

The dependence of the rate of proton-proton interactions on the centre-of-mass collision energy, √s, is of fundamental importance for both hadron collider physics and particle astrophysics. The dependence cannot yet be calculated from first principles; therefore, experimental measurements are needed. Here we present the first measurement of the inelastic proton-proton interaction cross-section at a centre-of-mass energy, √s, of 7 TeV using the ATLAs detector at the Large Hadron Collider. Events are selected by requiring hits on scintillation counters mounted in the forward region of the detector. An inelastic cross-section of 60.3 ± 2.1 mb is measured for ξ> 5×10-6, where ξ is calculated fro..

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University of Melbourne Researchers

Anna Phan Author

Martin Sevior Author

Elisabetta Barberio Author

Matteo Volpi Author

Grants

Awarded by STFC

Funding Acknowledgements

We thank CERN for the efficient commissioning and operation of the LHC during this initial high-energy data-taking period as well as the support staff from our institutions without whom ATLAS could not be operated efficiently. We also thank T. Sjostrand, M. Ryskin and V. Khoze for their help on the theoretical aspects of the analysis. We acknowledge the support of ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia; BMWF, Austria; ANAS, Azerbaijan; SSTC, Belarus; CNPq and FAPESP, Brazil; NSERC, NRC and CFI, Canada; CERN; CONICYT, Chile; CAS, MOST and NSFC, China; COLCIENCIAS, Colombia; MSMT CR, MPO CR and VSC CR, Czech Republic; DNRF, DNSRC and Lundbeck Foundation, Denmark; ARTEMIS, European Union; IN2P3-CNRS, CEA-DSM/IRFU, France; GNAS, Georgia; BMBF, DFG, HGF, MPG and AvH Foundation, Germany; GSRT, Greece; ISF, MINERVA, GIF, DIP and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; FOM and NWO, Netherlands; RCN, Norway; MNiSW, Poland; GRICES and FCT, Portugal; MERYS (MECTS), Romania; MES of Russia and ROSATOM, Russian Federation; JINR; MSTD, Serbia; MSSR, Slovakia; ARRS and MVZT, Slovenia; DST/NRF, South Africa; MICINN, Spain; SRC and Wallenberg Foundation, Sweden; SER, SNSF and Cantons of Bern and Geneva, Switzerland; NSC, Taiwan; TAEK, Turkey; STFC, the Royal Society and Leverhulme Trust, United Kingdom; and DOE and NSF, United States of America. The crucial computing support from all WLCG partners is acknowledged gratefully, in particular from CERN and the ATLAS Tier-1 facilities at TRIUMF (Canada), NDGF (Denmark, Norway, Sweden), CC-IN2P3 (France), KIT/GridKA (Germany), INFN-CNAF (Italy), NL-T1 (Netherlands), PIC (Spain), ASGC (Taiwan), RAL (UK) and BNL (USA) and in the Tier-2 facilities worldwide.