Measurement of the σ- charge radius by σ--electron elastic scattering

Eschrich, I.; Krüger, H.; Simon, J.; Vorwalter, K.; Alkhazov, G.; Atamantchouk, A. G.; Balatz, M. Y.; Bondar, N. F.; Cooper, P. S.; Dauwe, L. J.; Davidenko, G. V.; Dersch, U.; Dirkes, G.; Dolgolenko, A. G.; Dzyubenko, G. B.; Edelstein, R.; Emediato, L.; Endler, A. M.F.; Engelfried, J.; Escobar, C. O.; Evdokimov, A. V.; Filimonov, I. S.; Garcia, F. G.; Gaspero, M.; Giller, I.; Golovtsov, V. L.; Gouffon, P.; Gülmez, E.; Kangling, H.; Iori, M.; Jun, S. Y.; Kaya, M.; Kilmer, J.; Kim, V. T.; Kochenda, L. M.; Königsmann, K.; Konorov, I.; Kozhevnikov, A. P.; Krivshich, A. G.; Kubantsev, M. A.; Kubarovsky, V. P.; Kulyavtsev, A. I.; Kuropatkin, N. P.; Kurshetsov, V. F.; Kushnirenko, A.; Kwan, S.; Lach, J.; Lamberto, A.; Landsberg, L. G.; Larin, I.; Leikin, E. M.; Li, Y.; Luksys, M.; Lungov, T. [UNESP]; Maleev, V. P.; Mao, D.; Chensheng, M.; Zhenlin, M.; Masciocchi, S.; Mathew, P.; Mattson, M.; Matveev, V.; McCliment, E.; Moinester, M. A.; Molchanov, V. V.; Morelos, A.; Nelson, K. D.; Nemitkin, A. V.; Neoustroev, P. V.; Newsom, C.; Nilov, A. P.; Nurushev, S. B.; Ocherashvili, A.; Onel, Y.; Ozel, E.; Ozkorucuklu, S.; Penzo, A.; Petrenko, S. V.; Pogodin, P.; Povh, B.; Procario, M.; Prutskoi, V. A.; Ramberg, E.; Rappazzo, G. F.; Razmyslovich, B. V.; Rud, V. I.; Russ, J.; Scheglov, Y.; Schiavon, P.; Sitnikov, A. I.; Skow, D.; Smith, V. J.; Srivastava, M.; Steiner, V.; Stepanov, V.; Stutte, L.; Svoiski, M.; Terentyev, N. K.; Thomas, G. P.; Uvarov, L. N.; Vasiliev, A. N.; Vavilov, D. V.; Verebryusov, V. S.; Victorov, V. A.; Vishnyakov, V. E.; Vorobyov, A. A.; You, J.; Wenheng, Z.; Shuchen, Z.; Zukanovich-Funchal, R.

Measurement of the σ- charge radius by σ--electron elastic scattering

Data

2001-12-13

Autores

Eschrich, I.

Krüger, H.

Simon, J.

Vorwalter, K.

Alkhazov, G.

Atamantchouk, A. G.

Balatz, M. Y.

Bondar, N. F.

Cooper, P. S.

Dauwe, L. J.

Resumo

The σ- mean squared charge radius has been measured in the space-like Q2 range 0.035-0.105 GeV2/c2 by elastic scattering of a σ- beam off atomic electrons. The measurement was performed with the SELEX (E781) spectrometer using the Fermilab hyperon beam at a mean energy of 610 GeV/c. We obtain (rch2σ- = (0.61 ± 0.12(stat.) ± 0.09(syst.)) fm2. The proton and π- 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 σ-. © 2001 Elsevier Science B.V. All rights reserved.

Palavras-chave

Elastic scattering, Electromagnetic form factors, Hadron strong and electromagnetic radii, Hadron-induced elastic scattering at high energy, Hyperons

Como citar

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, v. 522, n. 3-4, p. 233-239, 2001.

URI

http://hdl.handle.net/11449/224228

Coleções

Artigos - Instituto de Física Teórica (IFT)

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Measurement of the σ- charge radius by σ--electron elastic scattering

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