Elastic differential cross-section measurement at  TeV by TOTEM

G. Antchev; P. Aspell; I. Atanassov; V. Avati; J. Baechler; C. Baldenegro Barrera; V. Berardi; M. Berretti; 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; F. Garcia; V. Georgiev; S. Giani; L. Grzanka; J. Hammerbauer; V. Ivanchenko; J. Kašpar; J. Kopal; V. Kundrát; S. Lami; G. Latino; R. Lauhakangas; C. Lindsey; M. V. Lokajíček; L. Losurdo; M. Lo Vetere; F. Lucas Rodríguez; M. Macrí; M. Malawski; N. Minafra; S. Minutoli; T. Naaranoja; F. Nemes; H. Niewiadomski; T. Novák; E. Oliveri; F. Oljemark; 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; A. Scribano; J. Smajek; W. Snoeys; J. Sziklai; C. Taylor; E. Tcherniaev; N. Turini; V. Vacek; J. Welti; J. Williams; R. Ciesielski

doi:10.1140/epjc/s10052-019-7346-7

2023 Impact factor 4.2

Particles and Fields

Open Access

Eur. Phys. J. C (2019) 79: 861
https://doi.org/10.1140/epjc/s10052-019-7346-7

Regular Article - Experimental Physics

Elastic differential cross-section measurement at TeV by TOTEM

G. Antchev, P. Aspell¹⁷, I. Atanassov, V. Avati¹⁵, J. Baechler¹⁷, C. Baldenegro Barrera¹⁹, V. Berardi⁸^,9, M. Berretti⁴, E. Bossini¹⁴, U. Bottigli¹⁴, M. Bozzo¹¹^,12, H. Burkhardt¹⁷, F. S. Cafagna⁸, M. G. Catanesi⁸, M. Csanád⁶, T. Csörgő⁶^,7, M. Deile¹⁷, F. De Leonardis⁸^,10, M. Doubek³, D. Druzhkin¹⁷, K. Eggert¹⁸, V. Eremin, F. Ferro¹¹, A. Fiergolski¹⁷, F. Garcia⁴, V. Georgiev¹, S. Giani¹⁷, L. Grzanka¹⁵, J. Hammerbauer¹, V. Ivanchenko¹⁶, J. Kašpar²^,13, J. Kopal¹⁷, V. Kundrát², S. Lami¹³, G. Latino¹⁴, R. Lauhakangas⁴, C. Lindsey¹⁹, M. V. Lokajíček², L. Losurdo¹⁴, M. Lo Vetere¹¹^,12, F. Lucas Rodríguez¹⁷, M. Macrí¹¹, M. Malawski¹⁵, N. Minafra¹⁹, S. Minutoli¹¹, T. Naaranoja⁴^,5, F. Nemes⁶^,17^*, H. Niewiadomski¹⁸, T. Novák⁷, E. Oliveri¹⁷, F. Oljemark⁴^,5, M. Oriunno, K. Österberg⁴^,5, P. Palazzi¹⁷, V. Passaro⁸^,10, Z. Peroutka¹, J. Procházka³, M. Quinto⁸^,9, E. Radermacher¹⁷, E. Radicioni⁸, F. Ravotti¹⁷, E. Robutti¹¹, C. Royon¹⁹, G. Ruggiero¹⁷, H. Saarikko⁴^,5, A. Scribano¹³, J. Smajek¹⁷, W. Snoeys¹⁷, J. Sziklai⁶, C. Taylor¹⁸, E. Tcherniaev¹⁶, N. Turini¹⁴, V. Vacek³, J. Welti⁴^,5, J. Williams¹⁹ and R. Ciesielski²⁰

¹ University of West Bohemia, Pilsen, Czech Republic
² Institute of Physics of the Academy of Sciences of the Czech Republic, Prague, Czech Republic
³ Czech Technical University, Prague, Czech Republic
⁴ Helsinki Institute of Physics, University of Helsinki, Helsinki, Finland
⁵ Department of Physics, University of Helsinki, Helsinki, Finland
⁶ Wigner Research Centre for Physics, RMKI, Budapest, Hungary
⁷ EKU KRC, Gyöngyös, Hungary
⁸ INFN Sezione di Bari, Bari, Italy
⁹ Dipartimento Interateneo di Fisica di Bari, Bari, Italy
¹⁰ Dipartimento di Ingegneria Elettrica e dell’Informazione-Politecnico di Bari, Bari, Italy
¹¹ INFN Sezione di Genova, Genoa, Italy
¹² Università degli Studi di Genova, Genoa, Italy
¹³ INFN Sezione di Pisa, Pisa, Italy
¹⁴ Università degli Studi di Siena and Gruppo Collegato INFN di Siena, Siena, Italy
¹⁵ AGH University of Science and Technology, Kraków, Poland
¹⁶ Tomsk State University, Tomsk, Russia
¹⁷ CERN, Geneva, Switzerland
¹⁸ Department of Physics, Case Western Reserve University, Cleveland, OH, USA
¹⁹ The University of Kansas, Lawrence, USA
²⁰ Rockefeller University, New York, USA

^* e-mail: fnemes@cern.ch

Received: 20 August 2019
Accepted: 19 September 2019
Published online: 19 October 2019

Abstract

The TOTEM collaboration has measured the elastic proton-proton differential cross section at TeV LHC energy using dedicated m beam optics. The Roman Pot detectors were inserted to 10 distance from the LHC beam, which allowed the measurement of the range [0.04 GeV; 4 GeV in four-momentum transfer squared |t|. The efficient data acquisition allowed to collect about 10 elastic events to precisely measure the differential cross-section including the diffractive minimum (dip), the subsequent maximum (bump) and the large-|t| tail. The average nuclear slope has been found to be GeV in the |t|-range 0.04–0.2 GeV. The dip position is GeV. The differential cross section ratio at the bump vs. at the dip has been measured with high precision. The series of TOTEM elastic pp measurements show that the dip is a permanent feature of the pp differential cross-section at the TeV scale.