Polarization of Σ+ hyperons produced by 800 GeV/c protons on Cu and Be

P. I. Pogodin,G. D. Alkhazov,A. G. Atamantchouk,M. Ya Balatz,Nikolai F. Bondar,Peter S. Cooper,L. J. Dauwe,G. V. Davidenko,Uwe Dersch,A. G. Dolgolenko,G. B. Dzyubenko,Richard M. Edelstein,L. G R Emediato,Antônio M F Endler,Jürgen Engelfried,Ivo Gough Eschrich,Carlos O. Escobar,A. V. Evdokimov,I. S. Filimonov,Fermin Guillén García,Mario Gaspero,I. Giller,V. L. Golovtsov,P. Gouffon,E. Gülmez,He Kangling,Mamada Iori,Soonyung Jun,Metin Orhan Kaya,James Kilmer,Victor T. Kim,L. M. Kochenda,Igor A. Konorov,A. P. Kozhevnikov,A. G. Krivshich,Hans Krüger,M. A. Kubantsev,Valery P. Kubarovsky,Alexander I. Kulyavtsev,Nikolay P. Kuropatkin,Victor F. Kurshetsov,Alexandre E. Kushnirenko,Simon Kwan,Joseph T. Lach,Antonino Lamberto,L. G. Landsberg,I. F. Larin,E. m. Leikin,L. Yushan,M. Luksys,Thais L. Lungov,Victor P. Maleev,Mao Chensheng,D. Mao,Mao Zhenlin,Paul A. Mathew,Mark Mattson,Viktor A. Matveev,Edward R. McCliment,Murray A. Moinester,VV V. Molchanov,A. Morelos Pineda,Karl D. Nelson,A. V. Nemitkin,P. V. Neoustroev,Charles Ray Newsom,A. P. Nilov,Sandibek B. Nurushev,A. I. Ocherashvili,E. C. De Oliveira,Yasar Önel,E. Ozel,S. Ozkurucuklu,Aldo Penzo,S. V. Petrenko,Megan C. Procario,V. A. Prutskoi,Erik J. Ramberg,Gaetana Francesca Rappazzo,B. V. Razmyslovich,Vasilii I. Ruď,James S. Russ,Paolo G. Schiavon,John E. Simon,A. I. Sitnikov,Dane Skow,V. J. Smith,Manish K. Srivastava,V. C. Steiner,V. L. Stepanov,Linda Stutte,M. Svoiski,N. K. Terentyev,Gerald P. Thomas,L. N. Uvarov,Alexander N. Vasiliev,Dima V. Vavilov,V. S. Verebryusov,V. A. Victorov,V. E. Vishnyakov,An A. Vorobyov,K. Vorwalter,J. M. You,Zhao Wenheng,Zheng Shuchen,Renata Zukanovich Funchal

PHYSICAL REVIEW D（2004）

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摘要

We show that Sigma(+) hyperons produced by 800 GeV/c protons on targets of Be and Cu have significant polarizations (15-20%). These polarizations persist at values of p(t)approximate to2 GeV/c and a wide range of x(F). The polarizations from the Cu target are consistently less than from Be. The average ratio of the Sigma(+) polarization from Cu to that from Be is 0.68+/-0.08.

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关键词

magnet,neutron,copper,dipole,magnetic field,polarization,elementary particles,beryllium

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