Measurement of the Sigma(-) charge radius by Sigma(-)-electron elastic scattering

Eschrich, I; Kruger, H; Simon, J; Vorwalter, K; Alkhazov, G; Atamantchouk, AG; Balatz, MY; Bondar, NF; Cooper, PS; Dauwe, LJ; Davidenko, GV; Dersch, U; Dirkes, G; Dolgolenko, AG; Dzyubenko, GB; Edelstein, R; Emediato, L; Endler, AMF; Engelfried, J; Escobar, CO; Evdokimov, AV; Filimonov, IS; Garcia, FG; Gaspero, M; Giller, I; Golovtsov, VL; Gouffon, P; Gulmez, E; Kangling, H; Iori, M; Jun, SY; Kaya, M; Kilmer, J; Kim, VT; Kochenda, LM; Konigsmann, K; Konorov, I; Kozhevnikov, AP; Krivshich, AG; Kubantsev, MA; Kubarovsky, VP; Kulyavtsev, AI; Kuropatkin, NP; Kurshetsov, VF; Kushnirenko, A; Kwan, S; Lach, J; Lamberto, A; Landsberg, LG; Larin, I; Leikin, EM; Li, YS; Luksys, M; Lungov, T; Maleev, VP; Mao, D; Mao, CS; Mao, ZL; Masciocchi, S; Mathew, P; Mattson, M; Matveev, V; McCliment, E; Moinester, MA; Molchanov, VV; Morelos, A; Nelson, KD; Nemitkin, AV; Neoustroev, PV; Newsom, C; Nilov, AP; Nurushev, SB; Ocherashvili, A; Onel, Y; Ozel, E; Ozkorucuklu, Suat; Penzo, A; Petrenko, SV; Pogodin, P; Povh, B; Procario, M; Prutskoi, VA; Ramberg, E; Rappazzo, GF; Razmyslovich, BV; Rud, VI; Russ, J; Scheglov, Y; Schiavon, P; Sitnikov, AI; Skow, D; Smith, VJ; Srivastava, M; Steiner, V; Stepanov, V; Stutte, L; Svoiski, M; Terentyev, NK; Thomas, GP; Uvarov, LN; Vasiliev, AN; Vavilov, DV; Verebryusov, VS; Victorov, VA; Vishnyakov, VE; Vorobyov, AA; You, J; Zhao, WH; Zheng, SC; Zukanovich-Funchal, R

doi:10.1016/s0370-2693(01)01285-0

Measurement of the Sigma(-) charge radius by Sigma(-)-electron elastic scattering

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Eschrich I., Kruger H., Simon J., Vorwalter K., Alkhazov G., Atamantchouk A., ...More

PHYSICS LETTERS B, vol.522, pp.233-239, 2001 (SCI-Expanded)

Publication Type: Article / Article
Volume: 522
Publication Date: 2001
Doi Number: 10.1016/s0370-2693(01)01285-0
Journal Name: PHYSICS LETTERS B
Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Page Numbers: pp.233-239
Istanbul University Affiliated: No

Abstract

The Sigma (-) mean squared charge radius has been measured in the space-like Q(2) range 0.035--0.105 GeV2/c(2) by elastic scattering of a Sigma (-) beam off atomic electrons. The measurement was per-formed with the SELEX (E781) spectrometer using the Fermilab hyperon beam at a mean energy of 610 GeV/c We obtain Sigma (-) =(0.61 +/- 0.12(stat.) +/- 0.09(syst.)) fm(2). The proton and pi (-) charge radii were measured as well and are consistent with results of other experiments. Our result agrees with the recently measured strong interaction radius of the Sigma (-). (C) 2001 Elsevier Science B.V. All rights reserved.