Characterisation of the dip-bump structure observed in proton–proton elastic scattering at √s = 8 TeV

Antchev, G.; Aspell, P.; Atanassov, I.; Avati, V.; Baechler, J.; Baldenegro Barrera, C.; Berardi, V.; Berretti, M.; Borchsh, V.; Bossini, E.; Bottigli, U.; Bozzo, M.; Burkhardt, H.; Cafagna, F. S.; Catanesi, M. G.; Csanád, M.; Csörgő, T.; Deile, M.; De Leonardis, F.; Doubek, M.; Druzhkin, D.; Eggert, K.; Eremin, V.; Ferro, F.; Fiergolski, A.; Forthomme, L.; Garcia, F.; Georgiev, V.; Giani, S.; Grzanka, L.; Hammerbauer, J.; Isidori, T.; Ivanchenko, V.; Janda, M.; Karev, A.; Kašpar, J.; Kaynak, B.; Kopal, J.; Kundrát, V.; Lami, S.; Latino, G.; Linhart, R.; Lindsey, C.; Lokajíček, M. V.; Losurdo, L.; Lucas Rodríguez, F.; Macrí, M.; Malawski, M.; Minafra, N.; Minutoli, S.; Naaranoja, T.; Nemes, F.; Niewiadomski, H.; Novák, T.; Oliveri, E.; Oljemark, F.; Oriunno, M.; Österberg, K.; Palazzi, P.; Passaro, V.; Peroutka, Z.; Procházka, J.; Quinto, M.; Radermacher, E.; Radicioni, E.; Ravotti, F.; Robutti, E.; Royon, C.; Ruggiero, G.; Saarikko, H.; Samoylenko, V. D.; Scribano, A.; Siroky, J.; Smajek, J.; Snoeys, W.; Stefanovitch, R.; Sziklai, J.; Taylor, C.; Tcherniaev, E.; Turini, N.; Urban, O.; Vacek, V.; Vavroch, O.; Welti, J.; Williams, J.; Zich, J.; Zielinski, K.; Collaboration, Totem

doi:10.1140/epjc/s10052-022-10065-x

The TOTEM collaboration at the CERN LHC has measured the differential cross-section of elastic proton-proton scattering at root s = 8 TeV in the squared four-momentum transfer range 0.2 GeV2 < vertical bar t vertical bar < 1.9 GeV2. This interval includes the structure with a diffractive minimum ("dip") and a secondary maximum ("bump") that has also been observed at all other LHC energies, where measurements were made. A detailed characterisation of this structure for root s = 8 TeV yields the positions, vertical bar t vertical bar(dip) = (0.521 +/- 0.007) GeV2 and vertical bar t vertical bar(bump) = (0.695 +/- 0.026) GeV2, as well as the cross-section values, d sigma/dt vertical bar(dip) = (15.1 +/- 2.5) mu b/GeV2 and d sigma/dt vertical bar(bump) = (29.7 +/- 1.8) mu b/Ge-2, for the dip and the bump, respectively.

Characterisation of the dip-bump structure observed in proton–proton elastic scattering at √s = 8 TeV / Antchev, G., Aspell, P., Atanassov, I., Avati, V., Baechler, J., Baldenegro Barrera, C., Berardi, V., Berretti, M., Borchsh, V., Bossini, E., Bottigli, U., Bozzo, M., Burkhardt, H., Cafagna, F.S., Catanesi, M.G., Csanád, M., Csörgő, T., Deile, M., De Leonardis, F., Doubek, M., et al.. - In: THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6044. - STAMPA. - 82:3(2022). [10.1140/epjc/s10052-022-10065-x]