Measurement of proton-proton inelastic scattering cross-section at √ s= 7TeV

Antchev, G.; Aspell, P.; Atanassov, I. p.; Avati, V.; Baechler, J.; Berardi, V. h.; Berretti, M.; Bossini, E.; Bozzo, Marco; Brogi, P.; Brücken, E. e.; Buzzo, A.; Cafagna, F.; Calicchio, M. h.; Catanesi, M.; Covault, C.; Csanád, M. t.; Csörgö, T.; Deile, M.; Doubek, M.; Eggert, K.; Eremin, V.; Ferretti, R. j.; Ferro, Fabrizio; Fiergolski, A.; Garcia, F.; Giani, S.; Greco, V. m.; Grzanka, L. s.; Heino, J.; Hilden, T. e.; Intonti, R.; Kašpar, J. m.; Kopal, J. m.; Kundrát, V.; Kurvinen, K.; Lami, S.; Latino, G.; Lauhakangas, R.; Leszko, T.; Lippmaa, E.; Lokajíček, M.; Lo Vetere, Maurizio; Rodríguez, F. L.; MacRí, M.; Mäki, T.; Mercadante, A. h.; Minafra, N.; Minutoli, S.; Nemes, F. t.; Niewiadomski, H.; Oliveri, E.; Oljemark, F. e.; Orava, R. e.; Oriunno, M. u.; Österberg, K. e.; Palazzi, P.; Procházka, J.; Quinto, M.; Radermacher, E.; Radicioni, E.; Ravotti, F.; Robutti, Enrico; Ropelewski, L.; Ruggiero, G.; Saarikko, H. e.; Santroni, Alberto; Scribano, A.; Smajek, J.; Snoeys, W.; Sziklai, J.; Taylor, C.; Turini, N.; Vacek, V.; Vítek, M.; Welti, J. e.; Whitmore, J.; Wyszkowski, P. v.

doi:10.1209/0295-5075/101/21003

The TOTEM experiment at the LHC has measured the inelastic proton-proton crosssection at √s = 7 TeV 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 aximally 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.

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Titolo:	Measurement of proton-proton inelastic scattering cross-section at √ s= 7TeV
Autori:	G. Antchev P. Aspell I. p. Atanassov V. Avati J. Baechler V. h. Berardi M. Berretti E. Bossini BOZZO, MARCO P. Brogi E. e. Brücken A. Buzzo F. Cafagna M. h. Calicchio M. Catanesi C. Covault M. t. Csanád T. Csörgö M. Deile M. Doubek K. Eggert V. Eremin R. j. Ferretti FERRO, FABRIZIO A. Fiergolski F. Garcia S. Giani V. m. Greco L. s. Grzanka J. Heino T. e. Hilden R. Intonti J. m. Kašpar J. m. Kopal V. Kundrát K. Kurvinen S. Lami G. Latino R. Lauhakangas T. Leszko E. Lippmaa M. Lokajíček LO VETERE, MAURIZIO F. L. Rodríguez M. MacRí T. Mäki A. h. Mercadante N. Minafra S. Minutoli F. t. Nemes H. Niewiadomski E. Oliveri F. e. Oljemark R. e. Orava M. u. Oriunno K. e. Österberg P. Palazzi J. Procházka M. Quinto E. Radermacher E. Radicioni F. Ravotti ROBUTTI, ENRICO L. Ropelewski G. Ruggiero H. e. Saarikko SANTRONI, ALBERTO A. Scribano J. Smajek W. Snoeys J. Sziklai C. Taylor N. Turini V. Vacek M. Vítek J. e. Welti J. Whitmore P. v. Wyszkowski mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2013
Rivista:	EUROPHYSICS LETTERS
Abstract:	The TOTEM experiment at the LHC has measured the inelastic proton-proton crosssection at √s = 7 TeV 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 aximally 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.
Handle:	http://hdl.handle.net/11567/629583
Appare nelle tipologie:	01.01 - Articolo su rivista

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