Characterisation of the dip-bump structure observed in proton-proton elastic scattering at root 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.; Csan??d, M.; Cs??rg??, 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.; Ka??par, J.; Kaynak, B.; Kopal, J.; Kundr??t, V.; Lami, S.; Latino, G.; Linhart, R.; Lindsey, C.; Lokaj????ek, M. V.; Losurdo, L.; Lucas Rodr??guez, F.; Macr??, M.; Malawski, M.; Minafra, N.; Minutoli, S.; Naaranoja, T.; Nemes, F.; Niewiadomski, H.; Nov??k, T.; Oliveri, E.; Oljemark, F.; Oriunno, M.; ??sterberg, K.; Palazzi, P.; Passaro, V.; Peroutka, Z.; Proch??zka, 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.

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.

Antchev, G., Aspell, P., Atanassov, I., Avati, V., Baechler, J., Baldenegro Barrera, C., et al. (2022). Characterisation of the dip-bump structure observed in proton-proton elastic scattering at root s=8 TeV. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 82(3) [10.1140/epjc/s10052-022-10065-x].