First measurement of elastic, inelastic and total cross-section at sqrt(s)= 13 TeV by TOTEM and overview of cross-section data at LHC energies
G. Antchev,P. Aspell,I. Atanassov,V. Avati,V. Avati,Joachim Baechler,C. Baldenegro Barrera,Vincenzo Berardi,Mirko Berretti,E. Bossini,U. Bottigli,M. Bozzo,Helmut Burkhardt,F. Cafagna,M. G. Catanesi,Mate Csanad,Tamás Csörgő,Mario Deile,F. De Leonardis,A. D'Orazio,Martin Doubek,D. Druzhkin,K. Eggert,V. Eremin,F. Ferro,A. Fiergolski,Francisco Garcia,Vjaceslav Georgiev,S. Giani,Leszek Grzanka,Leszek Grzanka,J. Hammerbauer,J. Heino,P. Helander,P. Helander,Tommaso Isidori,Vladimir Ivanchenko,M. Janda,A. Karev,J. Kašpar,J. Kopal,V. Kundrát,S. Lami,G. Latino,R. Lauhakangas,Richard Linhart,Cole Lindsey,Milos Lokajicek,L. Losurdo,M. Lo Vetere,F. Lucas Rodríguez,M. Macrí,Maciej Malawski,Nicola Minafra,S. Minutoli,T. Naaranoja,T. Naaranoja,Frigyes Nemes,H. Niewiadomski,Tamas Novak,Eraldo Oliveri,F. Oljemark,F. Oljemark,M. Oriunno,K. Osterberg,K. Osterberg,P. Palazzi,Vittorio M. N. Passaro,Zdenek Peroutka,J. Procházka,M. Quinto,E. Radermacher,E. Radicioni,F. Ravotti,E. Robutti,Ch. Royon,G. Ruggiero,Heimo Saarikko,Heimo Saarikko,A. Scribano,J. Siroky,J. Smajek,W. Snoeys,R. Stefanovitch,J. Sziklai,C. Taylor,Evgueni Tcherniaev,N. Turini,Vaclav Vacek,J. Welti,J. Welti,Justin Williams,P. Wyszkowski,J. Zich,K. Zielinski +94 more
TLDR
The TOTEM collaboration measured the proton-proton total cross section at the LHC with a luminosity-independent method as discussed by the authors using dedicated beam optics, the Roman Pots were inserted very close to the beam.Abstract:
The TOTEM collaboration has measured the proton–proton total cross section at $$\sqrt{s}=13~\hbox {TeV}$$
with a luminosity-independent method. Using dedicated $$\beta ^{*}=90~\hbox {m}$$
beam optics, the Roman Pots were inserted very close to the beam. The inelastic scattering rate has been measured by the T1 and T2 telescopes during the same LHC fill. After applying the optical theorem the total proton–proton cross section is $$\sigma _\mathrm{tot}=(110.6~\pm ~3.4$$
) mb, well in agreement with the extrapolation from lower energies. This method also allows one to derive the luminosity-independent elastic and inelastic cross sections: $$\sigma _\mathrm{el}=(31.0~\pm ~1.7)~\hbox {mb}$$
and $$\sigma _\mathrm{inel}=(79.5~\pm ~1.8)~\hbox {mb}$$
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