Spin asymmetry in muon-proton deep inelastic scattering on a transversely-polarized target

D. Adams*, B. Adeva, E. Arik, A. Arvidson, B. Badelek, M. K. Ballintijn, G. Bardin, G. Baum, P. Berglund, L. Betev, I. G. Bird, R. Birsa, P. Björkholm, B. E. Bonner, N. de Botton, F. Bradamante, A. Bressan, A. Brüll, S. Bültmann, E. BurtinC. Cavata, M. Clocchiatti, M. D. Corcoran, D. Crabb, J. Cranshaw, M. Crawford, T. Çuhadar, S. Dalla Torre, R. van Dantzig, S. Dhawan, C. Dulya, A. Dyring, S. Eichblatt, J. C. Faivre, D. Fasching, F. Feinstein, C. Fernandez, B. Frois, J. A. Garzon, T. Gaussiran, M. Giorgi, E. von Goeler, G. Gracia, N. de Groot, M. Grosse Perdekamp, E. Gülmez, D. von Harrach, T. Hasegawa, P. Hautle, N. Hayashi, C. A. Heusch, N. Horikawa, V. W. Hughes, G. Igo, S. Ishimoto, T. Iwata, E. M. Kabuß, R. Kaiser, A. Karev, H. J. Kessler, T. J. Ketel, A. Kishi, Yu Kisselev, L. Klostermann, D. Krämer, V. Krivokhijine, V. Kukhtin, J. Kyynäräinen, M. Lamanna, U. Landgraf, K. Lau, T. Layda, J. M. Le Goff, F. Lehar, A. de Lesquen, J. Lichtenstadt, T. Lindqvist, M. Litmaath, S. Lopez-Ponte, M. Lowe, A. Magnon, G. K. Mallot, F. Marie, A. Martin, J. Martino, T. Matsuda, B. Mayes, J. S. McCarthy, K. Medved, G. van Middelkoop, D. Miller, K. Mori, J. Moromisato, A. Nagaitsev, J. Nassalski, L. Naumann, T. O. Niinikoski, J. E.J. Oberski, D. P. Parks, A. Penzo, C. Perez, F. Perrot-Kunne, D. Peshekhonov, R. Piegaia, L. Pinsky, S. Platchkov, M. Plo, D. Pose, H. Postma, J. Pretz, T. Pussieux, J. Pyrlik, I. Reyhancan, J. M. Rieubland, A. Rijllart, J. B. Roberts, S. Rock, M. Rodriguez, E. Rondio, A. Rosado, I. Sabo, J. Saborido, A. Sandacz, I. Savin, P. Schiavon, K. P. Schüler, R. Segel, R. Seitz, Y. Semertzidis, F. Sever, P. Shanahan, N. Shumeiko, G. Smirnov, A. Staude, A. Steinmetz, U. Stiegler, H. Stuhrmann, K. M. Teichert, F. Tessarotto, M. Velasco, J. Vogt, R. Voss, R. Weinstein, C. Whitten, R. Windmolders, R. Willumeit, W. Wislicki, A. Witzmann, A. M. Zanetti, J. Zhao

*Bu çalışma için yazışmadan sorumlu yazar

Araştırma sonucu: Dergiye katkıMakalebilirkişi

128 Atıf (Scopus)

Özet

We measured the spin asymmetry in the scattering of 100 GeV longitudinally-polarized muons on transversely polarized protons. The asymmetry was found to be compatible with zero in the kinematic range 0.006 < x < 0.6, 1 < Q2 < 30 GeV2. From this result we derive the upper limits for the virtual photon-proton asymmetry A2, and for the spin structure function g2. For x < 0.15, A2 is significantly smaller than its positivity limit √R.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)125-130
Sayfa sayısı6
DergiPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Hacim336
Basın numarası1
DOI'lar
Yayın durumuYayınlandı - 15 Eyl 1994
Harici olarak yayınlandıEvet

Finansman

The nucleon spin-dependent structure functions, gl and g2, can be determined in deep inelastic scattering of polarized charged leptons on polarized nucleons. Both are important for the understanding of nucleon spin structure. The structure function gl is used to test QCD sum rules, and in the quark-parton model it determines the contribution of the quark spins to the 15 Supported by the National Science Foundation. 16 Supported by Ishida Foundation, Mitsubishi Foundation and Monbusho International Science Research Program. 17 Supported by the National Science Foundation (NWO) of the Netherlands. Is Supported by Comision Interministerial de Ciencia y Tecnologia. 19 Supported by the US-Israel Binational Science Foundation, Jerusalem, Israel and The Israeli Academy of Sciences. 20 Supported by KBN grant nr. 20958-9101. 21Permanent address: Belarussian State University, Minsk, Belarus. l Now at CERN, 1211 Geneva 23, Switzerland. 2 Now at University of Montreal, PQ, H3C 3J7, Montreal, Canada. 3 Now at Max Planck Institute, Heidelberg, Germany. 4 Permanent address: Paul Scherrer Institut, 5232 Villigen, Switzerland. 5 Permanent address: Miyazaki University, 88921 Miyazaki-Shi, Japan. 6 Permanent address: KEK, 305 Ibaraki-Ken, Japan. 7 Permanent address: University of Buenos Aires, Physics Department, 1428 Buenos Aires, Argentina. 8 Now at SSC Laboratory, Dallas, 75237 TX, USA. 9 Permanent address: The American University, Washington D.C. 20016, USA. lO Present address: ESFR, F-38043 Grenoble, France. l l Research Fellow of JSPS. 12 Partially supported by TUBITAK and Centre for Turkish-Balkan Physics Research and Applications (Bo~aziqi University). 13 Supported by Bundesministerium fiir Forschung und Technologie. 14 Supported by the U.S. Department of Energy.

FinansörlerFinansör numarası
Bo~aziqi University
Centre for Turkish-Balkan Physics Research and Applications
Ishida Foundation
Israeli Academy of Sciences
KBN20958-9101
Monbusho International Science Research Program
TUBITAK
National Science Foundation
U.S. Department of Energy
United States-Israel Binational Science Foundation
Nederlandse Organisatie voor Wetenschappelijk Onderzoek
Mitsubishi Foundation
Bundesministerium für Forschung und Technologie
Comisión Interministerial de Ciencia y Tecnología

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