Authors
G Antchev, P Aspell, I Atanassov, V Avati, J Baechler, V Berardi, Mirko Berretti, M Bozzo, E Brücken, A Buzzo, FS Cafagna, M Calicchio, MG Catanesi, C Covault, M Csanád, T Csörgö, M Deile, E Dimovasili, M Doubek, K Eggert, V Eremin, F Ferro, Adrian Fiergolski, F Garcia, S Giani, V Greco, L Grzanka, J Heino, T Hilden, M Janda, J Kašpar, J Kopal, V Kundrát, K Kurvinen, S Lami, Giuseppe Latino, R Lauhakangas, T Leszko, E Lippmaa, M Lokajíček, M Lo Vetere, F Lucas Rodríguez, M Macrí, L Magaletti, G Magazzù, A Mercadante, S Minutoli, F Nemes, H Niewiadomski, E Noschis, T Novák, Eraldo Oliveri, F Oljemark, R Orava, M Oriunno, K Österberg, A-L Perrot, P Palazzi, Elena Pedreschi, J Petäjäjärvi, J Procházka, M Quinto, E Radermacher, E Radicioni, F Ravotti, E Robutti, L Ropelewski, G Ruggiero, H Saarikko, A Santroni, Angelo Scribano, G Sette, W Snoeys, F Spinella, J Sziklai, C Taylor, Nicola Turini, V Vacek, M Vitek, J Welti, J Whitmore, TOTEM Collaboration
Publication date
2011/7/13
Journal
Europhysics Letters
Volume
95
Issue
4
Pages
41001
Publisher
IOP Publishing
Description
Proton-proton elastic scattering has been measured by the TOTEM experiment at the CERN Large Hadron Collider at in dedicated runs with the Roman Pot detectors placed as close as seven times the transverse beam size (σ beam) from the outgoing beams. After careful study of the accelerator optics and the detector alignment,| t|, the square of four-momentum transferred in the elastic scattering process, has been determined with an uncertainty of. In this letter, first results of the differential cross-section are presented covering a| t|-range from 0.36 to 2.5 GeV 2. The differential cross-section in the range 0.36<| t|< 0.47 GeV 2 is described by an exponential with a slope parameter B=(23.6±0.5 stat±0.4 syst) GeV− 2, followed by a significant diffractive minimum at| t|=(0.53±0.01 stat±0.01 syst) GeV 2. For| t|-values larger than∼ 1.5 GeV 2, the cross-section exhibits a power law behaviour with an exponent of− 7.8±0.3 …
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G Antchev, P Aspell, I Atanassov, V Avati, J Baechler… - Europhysics Letters, 2011