Elastic differential cross-section measurement at root s=13 TeV by TOTEM

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TOTEM Collaboration , Antchev , G , Berretti , M , Garcia , F , Lauhakangas , R , Naaranoja , T , Oljemark , F , Österberg , K , Saarikko , H & Welti , J 2019 , ' Elastic differential cross-section measurement at root s=13 TeV by TOTEM ' , European Physical Journal C. Particles and Fields , vol. 79 , no. 10 , 861 . https://doi.org/10.1140/epjc/s10052-019-7346-7

Title: Elastic differential cross-section measurement at root s=13 TeV by TOTEM
Author: TOTEM Collaboration; Antchev, G.; Berretti, M.; Garcia, F.; Lauhakangas, R.; Naaranoja, T.; Oljemark, F.; Österberg, K.; Saarikko, H.; Welti, J.
Contributor organization: Helsinki Institute of Physics
Department of Physics
Date: 2019-10
Language: eng
Number of pages: 15
Belongs to series: European Physical Journal C. Particles and Fields
ISSN: 1434-6044
DOI: https://doi.org/10.1140/epjc/s10052-019-7346-7
URI: http://hdl.handle.net/10138/306682
Abstract: The TOTEM collaboration has measured the velastic proton-proton differential cross section d sigma/dt at root s = 13 TeV LHC energy using dedicated beta* = 90 m beam optics. The Roman Pot detectors were inserted to 10s distance from the LHC beam, which allowed the measurement of the range [0.04 GeV2; 4 GeV2] in four-momentum transfer squared vertical bar t vertical bar. The efficient data acquisition allowed to collect about 10(9) elastic events to precisely measure the differential cross-section including the diffractive minimum (dip), the subsequent maximum (bump) and the large-vertical bar t vertical bar tail. The average nuclear slope has been found to be B = (20.40 +/- 0.002(stat) +/- 0.01(syst)) GeV-2 in the vertical bar t vertical bar-range 0.04-0.2 GeV2. The dip position is vertical bar t(dip)vertical bar = (0.47 +/- 0.004(stat)+/- 0.01(syst)) GeV2. The differential cross section ratio at the bump vs. at the dip R = 1.77 +/- 0.01(stat) 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.
Subject: 114 Physical sciences
Peer reviewed: Yes
Rights: cc_by
Usage restriction: openAccess
Self-archived version: publishedVersion


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