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arXiv · 2111.11991

Characterisation of the dip-bump structure observed in proton-proton elastic scattering at $\sqrt s$ = 8 TeV

The TOTEM Collaboration·G. Antchev·P. Aspell·I. Atanassov·V. Avati·J. Baechler·C. Baldenegro Barrera·V. Berardi·M. Berretti·V. Borchsh·E. Bossini·U. Bottigli·M. Bozzo·H. Burkhardt·F. S. Cafagna·M. G. Catanesi·M. Csanád·T. Csörgő·M. Deile·F. De Leonardis·M. Doubek·D. Druzhkin·K. Eggert·V. Eremin·F. Ferro·A. Fiergolski·L. Forthomme·F. Garcia·V. Georgiev·S. Giani·L. Grzanka·J. Hammerbauer·T. Isidori·V. Ivanchenko·M. Janda·A. Karev·J. Kašpar·B. Kaynak·J. Kopal·V. Kundrát·S. Lami·G. Latino·R. Linhart·C. Lindsey·M. V. Lokajíček·L. Losurdo·F. Lucas Rodríguez·M. Macrí·M. Malawski·N. Minafra·S. Minutoli·T. Naaranoja·F. Nemes·H. Niewiadomski·T. Novák·E. Oliveri·F. Oljemark5·M. Oriunno·K. Österberg·P. Palazzi·V. Passaro·Z. Peroutka·J. Procházka·M. Quinto·E. Radermacher·E. Radicioni·F. Ravotti·E. Robutti·C. Royon·G. Ruggiero·H. Saarikko·V. D. Samoylenko·A. Scribano·J. Siroky·J. Smajek·W. Snoeys·R. Stefanovitch·J. Sziklai·C. Taylor·E. Tcherniaev·N. Turini·O. Urban·V. Vacek·O. Vavroch·J. Welti·J. Williams·J. Zich·K. Zielinski
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Abstract

The TOTEM collaboration at the CERN LHC has measured the differential cross-section of elastic proton-proton scattering at $\sqrt{s} = 8\ {\rm TeV}$ in the squared four-momentum transfer range $0.2\ {\rm GeV^{2}} < |t| < 1.9\ {\rm GeV^{2}}$. 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 $\sqrt{s} = 8\ {\rm TeV}$ yields the positions, $|t|_{\rm dip} = (0.521 \pm 0.007)\ {\rm GeV^2}$ and $|t|_{\rm bump} = (0.695 \pm 0.026)\ {\rm GeV^2}$, as well as the cross-section values, ${{\rm d}\sigma/{\rm d} t}_{\rm dip} = (15.1 \pm 2.5)\ {\rm{\mu b/GeV^2}}$ and ${{\rm d}\sigma/{\rm d} t}_{\rm bump} = (29.7 \pm 1.8)\ {\rm{\mu b/GeV^2}}$, for the dip and the bump, respectively.

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The TOTEM Collaboration, G. Antchev, P. Aspell, I. Atanassov, V. Avati, J. Baechler, C. Baldenegro Barrera, V. Berardi, M. Berretti, V. Borchsh, E. Bossini, U. Bottigli, M. Bozzo, H. Burkhardt, F. S. Cafagna, M. G. Catanesi, M. Csanád, T. Csörgő, M. Deile, F. De Leonardis, M. Doubek, D. Druzhkin, K. Eggert, V. Eremin, F. Ferro, A. Fiergolski, L. Forthomme, F. Garcia, V. Georgiev, S. Giani, L. Grzanka, J. Hammerbauer, T. Isidori, V. Ivanchenko, M. Janda, A. Karev, J. Kašpar, B. Kaynak, J. Kopal, V. Kundrát, S. Lami, G. Latino, R. Linhart, C. Lindsey, M. V. Lokajíček, L. Losurdo, F. Lucas Rodríguez, M. Macrí, M. Malawski, N. Minafra, S. Minutoli, T. Naaranoja, F. Nemes, H. Niewiadomski, T. Novák, E. Oliveri, F. Oljemark5, M. Oriunno, K. Österberg, P. Palazzi, V. Passaro, Z. Peroutka, J. Procházka, M. Quinto, E. Radermacher, E. Radicioni, F. Ravotti, E. Robutti, C. Royon, G. Ruggiero, H. Saarikko, V. D. Samoylenko, A. Scribano, J. Siroky, J. Smajek, W. Snoeys, R. Stefanovitch, J. Sziklai, C. Taylor, E. Tcherniaev, N. Turini, O. Urban, V. Vacek, O. Vavroch, J. Welti, J. Williams, J. Zich, K. Zielinski. 2021-11-23. Characterisation of the dip-bump structure observed in proton-proton elastic scattering at $\sqrt s$ = 8 TeV. https://arxiv.org/abs/2111.11991

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