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Results on total and elastic cross sections in proton–proton collisions at s=200 GeV

  • Author(s): Adam, J
  • Adamczyk, L
  • Adams, JR
  • Adkins, JK
  • Agakishiev, G
  • Aggarwal, MM
  • Ahammed, Z
  • Alekseev, I
  • Anderson, DM
  • Aparin, A
  • Aschenauer, EC
  • Ashraf, MU
  • Atetalla, FG
  • Attri, A
  • Averichev, GS
  • Bairathi, V
  • Barish, K
  • Behera, A
  • Bellwied, R
  • Bhasin, A
  • Bielcik, J
  • Bielcikova, J
  • Bland, LC
  • Bordyuzhin, IG
  • Brandenburg, JD
  • Brandin, AV
  • Bueltmann, S
  • Butterworth, J
  • Caines, H
  • Calderón de la Barca Sánchez, M
  • Cebra, D
  • Chakaberia, I
  • Chaloupka, P
  • Chan, BK
  • Chang, FH
  • Chang, Z
  • Chankova-Bunzarova, N
  • Chatterjee, A
  • Chen, D
  • Chen, JH
  • Chen, X
  • Chen, Z
  • Cheng, J
  • Cherney, M
  • Chevalier, M
  • Choudhury, S
  • Christie, W
  • Chu, X
  • Crawford, HJ
  • Csanád, M
  • Daugherity, M
  • Dedovich, TG
  • Deppner, IM
  • Derevschikov, AA
  • Didenko, L
  • Dong, X
  • Drachenberg, JL
  • Dunlop, JC
  • Edmonds, T
  • Elsey, N
  • Engelage, J
  • Eppley, G
  • Esumi, S
  • Evdokimov, O
  • Ewigleben, A
  • Eyser, O
  • Fatemi, R
  • Fazio, S
  • Federic, P
  • Fedorisin, J
  • Feng, CJ
  • Feng, Y
  • Filip, P
  • Finch, E
  • Fisyak, Y
  • Francisco, A
  • Fulek, L
  • Gagliardi, CA
  • Galatyuk, T
  • Geurts, F
  • Gibson, A
  • Gopal, K
  • Grosnick, D
  • Guryn, W
  • Hamad, AI
  • Hamed, A
  • Harabasz, S
  • Harris, JW
  • He, S
  • He, W
  • He, XH
  • Heppelmann, S
  • Herrmann, N
  • Hoffman, E
  • Holub, L
  • Hong, Y
  • Horvat, S
  • Hu, Y
  • Huang, HZ
  • Huang, SL
  • et al.
Abstract

© 2020 The Author We report results on the total and elastic cross sections in proton-proton collisions at s=200 GeV obtained with the Roman Pot setup of the STAR experiment at the Relativistic Heavy Ion Collider (RHIC). The elastic differential cross section was measured in the squared four-momentum transfer range 0.045≤−t≤0.135 GeV2. The value of the exponential slope parameter B of the elastic differential cross section dσ/dt∼e−Bt in the measured −t range was found to be B=14.32±0.09(stat.)−0.28+0.13(syst.) GeV−2. The total cross section σtot, obtained from extrapolation of the dσ/dt to the optical point at −t=0, is σtot=54.67±0.21(stat.)−1.38+1.28(syst.) mb. We also present the values of the elastic cross section σel=10.85±0.03(stat.)−0.41+0.49(syst.) mb, the elastic cross section integrated within the STAR t-range σeldet=4.05±0.01(stat.)−0.17+0.18(syst.) mb, and the inelastic cross section σinel=43.82±0.21(stat.)−1.44+1.37(syst.) mb. The results are compared with the world data.

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