Double Diffractive Cross-Section Measurement in the Forward Region at the LHC

Antchev, G.; Aspell, P.; Atanassov, I.; Avati, V.; Baechler, J.; Berardi, V.; Berretti, Mirko; Bossini, Edoardo; Bottigli, Ubaldo; Bozzo, M.; Brücken, E.; Buzzo, A.; Cafagna, F.; Catanesi, M.; Covault, C.; Csanád, M.; Csörg??, T.; Deile, M.; Eggert, K.; Eremin, V.; Ferro, F.; Fiergolski, A.; Garcia, F.; Giani, S.; Greco, V.; Grzanka, L.; Heino, J.; Hilden, T.; Karev, A.; Ka??par, J.; Kopal, J.; Kundrát, V.; Kurvinen, K.; Lami, S.; Latino, Giuseppe; Lauhakangas, R.; Leszko, T.; Lippmaa, E.; Lippmaa, J.; Lokají??ek, M.; Losurdo, Liliana; Lo Vetere, M.; Lucas Rodríguez, F.; Macrí, M.; Mäki, T.; Mercadante, A.; Minafra, N.; Minutoli, S.; Nemes, F.; Niewiadomski, H.; Oliveri, Eraldo; Oljemark, F.; Orava, R.; Oriunno, M.; Österberg, K.; Palazzi, P.; Procházka, J.; Quinto, M.; Radermacher, E.; Radicioni, E.; Ravotti, F.; Robutti, E.; Ropelewski, L.; Ruggiero, G.; Saarikko, H.; Scribano, Angelo; Smajek, J.; Snoeys, W.; Sziklai, J.; Taylor, C.; Turini, Nicola; Vacek, V.; Vítek, M.; Welti, J.; Whitmore, J.; Wyszkowski, P.

doi:10.1103/PhysRevLett.111.262001

The first double diffractive cross-section measurement in the very forward region has been carried out by the TOTEM experiment at the LHC with a center-of-mass energy of root s = 7 TeV. By utilizing the very forward TOTEM tracking detectors T1 and T2, which extend up to vertical bar eta vertical bar = 6.5, a clean sample of double diffractive pp events was extracted. From these events, we determined the cross section sigma(DD) = (116 +/- 25) mu b for events where both diffractive systems have 4.7 < vertical bar eta vertical bar(min) < 6.5.

G., A., P., A., I., A., V., A., J., B., V., B., et al. (2013). Double Diffractive Cross-Section Measurement in the Forward Region at the LHC. PHYSICAL REVIEW LETTERS, 111(26) [10.1103/PhysRevLett.111.262001].