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Analyzing power in inclusive pi+ and pi- production at high XF with a 200 GeV polarized proton beam (Articolo in rivista)

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Analyzing power in inclusive pi+ and pi- production at high XF with a 200 GeV polarized proton beam (Articolo in rivista) (literal)

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D.L. Adams, N. Akchurin, N.I. Belikov, B.E. Bonner, J.A. Buchanan, j. Bystricky, J.M. Clement, M.D. Corcoran, J.D. Cossairt, j. Cranshaw, A.A. Derevschikov, H. En'yo, H. Funahashi, y. Goto, O.A. Grachov, D.P. Grosnick, D.A. Hill, K. Imai, Y. Itow, K. Iwatani, K.W. Krueger, K. Kuroda, j. Langland, F. Lehar, A. de Lesquen, D. Lopiano, F.C. Luehring, T. Maki, S. Makino, A. Masaike, Yu.A. Matulenko, A.P. Meschanin, A. Michalowicz, D.H. Miller, K. Miyake, T. Nagamine, F. Nessi-Tedaldi, M. Nessi, C. Nguyen, S.B. Nurushev, Y. Ohashi, y. Onel, D.I. Patalakha, G. Pauletta, A. Penzo, G.C. Phillips, A.L. Read, J.B. Roberts, L. van Rossum, V.L. Rykov, N. Saito, G. Salvato, p. Schiavon, J. Skeens, V.L. Solovyanov, H. Spinka, R.W. Stanek, R. Takashima, F. Takeutchi, N. Tamura, N. Tanaka, D.G. Underwood, A.N. Vasiliev, A. Villari, J.L. White, S. Yamashita, A. Yokosawa, T. Yoshida and A. Zanetti (1991)
Analyzing power in inclusive pi+ and pi- production at high XF with a 200 GeV polarized proton beam
in Physics letters. B (Print)
(literal)

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D.L. Adams, N. Akchurin, N.I. Belikov, B.E. Bonner, J.A. Buchanan, j. Bystricky, J.M. Clement, M.D. Corcoran, J.D. Cossairt, j. Cranshaw, A.A. Derevschikov, H. En'yo, H. Funahashi, y. Goto, O.A. Grachov, D.P. Grosnick, D.A. Hill, K. Imai, Y. Itow, K. Iwatani, K.W. Krueger, K. Kuroda, j. Langland, F. Lehar, A. de Lesquen, D. Lopiano, F.C. Luehring, T. Maki, S. Makino, A. Masaike, Yu.A. Matulenko, A.P. Meschanin, A. Michalowicz, D.H. Miller, K. Miyake, T. Nagamine, F. Nessi-Tedaldi, M. Nessi, C. Nguyen, S.B. Nurushev, Y. Ohashi, y. Onel, D.I. Patalakha, G. Pauletta, A. Penzo, G.C. Phillips, A.L. Read, J.B. Roberts, L. van Rossum, V.L. Rykov, N. Saito, G. Salvato, p. Schiavon, J. Skeens, V.L. Solovyanov, H. Spinka, R.W. Stanek, R. Takashima, F. Takeutchi, N. Tamura, N. Tanaka, D.G. Underwood, A.N. Vasiliev, A. Villari, J.L. White, S. Yamashita, A. Yokosawa, T. Yoshida and A. Zanetti (literal)

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T.W.. Bonner Nuclear Laboratory, Rice University, Houston, TX 77251, USA Department of Physics, University oflowa, Iowa City, IA 52242, USA Institute of High Energy Physics, Serpukhov, USSR CEN-Saclay, F-91191 Gif-sur- Yvette, France Fermi NationalAcceleratorLaboratory, Batavia, IL 60510, USA Department of Physics, Kyoto University, Kyoto 606, Japan Argonne National Laboratory, Argonne, 1L 60439, USA Hiroshima University, Higashi, Hiroshima 724, Japan Northeastern State University, Talequah, OK 74464, USA Laboratoire de Physique des Particules, B.P. 909, F- 74017 Annecy-le- Vieux, France Physics Department, Northwestern University, Evanston, IL 60201, USA University of Occupational and Environmental Health, Kita, Kyushu 807, Japan Universitit di Udine, 1-33100 Udine, UD, Italy Dipartimento di Fisica, Universitdl di Trieste, 1-34100 Trieste, Italy Dipartimento di Fisica, Universit& di Messina, 1-98100 Messina, Italy Kyoto University of Education, Kyoto 612, Japan Kyoto-Sangyo University, Kyoto 612, Japan Okayama University, Okayama 700, Japan Los Alamos National Laboratory, Los Alarnos, NM 87545, USA Osaka City University, Osaka 558, Japan (literal)

Titolo

Analyzing power in inclusive pi+ and pi- production at high XF with a 200 GeV polarized proton beam (literal)

Abstract

The analyzing power in inclusive charged pion production has been measured using the 200 GeV Fermilab polarized proton beam. A striking dependence in x(F) is observed in which A(N) increases from 0 to 0.42 with increasing x(F) for the pi+ data and decreases from 0 to -0.38 with increasing x(F) for pi- data. The kinematic range covered is 0.2 less-than-or-equal-to x(F) less-than-or-equal-to 0.9 and 0.2 less-than-or-equal-to p(T) 2.0 GeV/c. In a simple model our data indicate that at large x(F) the transverse spin of the proton is correlated with that of its quark constituents. (literal)

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