Phys. Rev. D
60,
072004
(1999)
[9 pages]
Spin asymmetries A1 of the proton and the deuteron in the low x and low Q2 region from polarized high energy muon scattering
B. Adeva et al. (Spin Muon Collaboration)
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B. Adeva18, E. Arik2, A. Arvidson21,*, B. Badełek21,23, G. Baum1, P. Berglund8, L. Betev13,†, R. Birsa20, N. de Botton17, F. Bradamante20, A. Bravar11, S. Bültmann1,‡, E. Burtin17, D. Crabb22, J. Cranshaw20,§, T. Çuhadar2,15, S. Dalla Torre20, R. van Dantzig15, B. Derro4, A. Deshpande24, S. Dhawan24, C. Dulya4,**, S. Eichblatt§, D. Fasching16,††, F. Feinstein17, C. Fernandez20,9, B. Froise17, A. Gallas20, J. A. Garzon20,9, H. Gilly6, M. Giorgi22, S. Goertz3, G. Garcia20,‡‡, N. de Groot15,a, M. Grosse Perdekamp24,b, K. Haft13, D. von Harrach11, T. Hasegawa14,c, P. Hautle5,d, N. Hayashi14,e, C. A. Heusch5,f, N. Horikawa14, V. W. Hughes24, G. Igo4, S. Ishimoto14,g, T. Iwata14, E. M. Kabuß11, A. Karev10, H. J. Kessler6,h, T. J. Ketel15, J. Kiryluk21,23, Yu. Kisselev10, D. Krämer1, W. Kröger5,f, K. Kurek23, J. Kyynäräinen1,8, M. Lamanna20,i, U. Landgraf6, J. M. Le Goff17, F. Lehar17, A. de Lesquen17, J. Lichtenstadt19, M. Litmaath15,i, A. Magnon19, G. K. Mallot11,i, F. Marie17, A. Martin20, J. Martino17, T. Matsuda14,c, B. Mayes9, J. S. McCarthy22, K. Medved10, W. Meyer3, G. van Middelkoop15, D. Miller16, Y. Miyachi14, K. Mori14, J. Nassalski23, T. O. Niinikoski5, J. E. J. Oberski15, A. Ogawa14,j, C. Ozben2, H. Pereira17, F. Perrot-Kunne17, D. Peshekhonov10,k, R. Piegaia24,l, L. Pinsky9, S. Platchkov17, M. Plo18, D. Pose10, H. Postma15, J. Pretz11,m, R. Puntaferro20, G. Rädel5,n, G. Reicherz3, J. Robertso, M. Rodriguez21,l, E. Rondio23, I. Sabo19, J. Saborido18, A. Sandacz23, I. Savin10, P. Schiavon20, E. P. Sichtermann15, F. Simeoni20, G. I. Smirnov10, A. Staude13, A. Steinmetz11,m, U. Stiegler5, H. Stuhrmann7, F. Tessarotto20, D. Thers17, W. Tłaczała23,p, A. Tripet1, G. Unel2, M. Velasco15,i, J. Vogt13, R. Voss5, C. Whitten4, R. Willumeit7, R. Windmolders12, W. Wiślicki23, A. Witzmann6,q, A. M. Zanetti20, K. Zaremba23,p, and J. Zhao7,r (Spin Muon Collaboration)
1University of Bielefeld, Physics Department, D-33501 Bielefeld, Germany
2Bogaziçi University and Istanbul Technical University, 80676 Istanbul, Turkey
3University of Bochum, Physics Department, D-44780 Bochum, Germany
4University of California, Department of Physics, Los Angeles, California 90024
5CERN, CH-1211 Geneva 23, Switzerland
6University of Freiburg, Physics Department, D-79104 Freiburg, Germany
7GKSS, D-21494 Geesthacht, Germany
8Helsinki University of Technology, Low Temperature Laboratory and Institute of Particle Physics Technology, 02150 Espoo, Finland
9University of Houston, Department of Physics and Institute for Beam Particle Dynamics, Houston, Texas 77204
10JINR, Dubna, RU-141980 Dubna, Russia
11University of Mainz, Institute for Nuclear Physics, D-55099 Mainz, Germany
12University of Mons, Faculty of Science, B-7000 Mons, Belgium
13University of Munich, Physics Department, D-80799 Munich, Germany
14Nagoya University, CIRSE and Department of Physics, Furo-Cho, Chikusa-Ku, 464 Nagoya, Japan
15NIKHEF, Delft University of Technology, FOM and Free University, 1009 AJ Amsterdam, The Netherlands
16Northwestern University, Department of Physics, Evanston, Illinois 60208
17C.E.A. Saclay, DAPNIA, F-91191 Gif-sur-Yvette, France
18University of Santiago, Department of Particle Physics, E-15706 Santiago de Compostela, Spain
19Tel Aviv University, School of Physics, 69978 Tel Aviv, Israel
20INFN Trieste and University of Trieste, Department of Physics, I-34127 Trieste, Italy
21Uppsala University, Department of Radiation Sciences, S-75121 Uppsala, Sweden
22University of Virginia, Department of Physics, Charlottesville, Virginia 22901
23Soltan Institute for Nuclear Studies and Warsaw University, PL-00681 Warsaw, Poland
24Yale University, Department of Physics, New Haven, Connecticut 06520
See Also:
Erratum
Received 22 April 1999; published 13 September 1999
We present the results of the spin asymmetries A1 of the proton and the deuteron in the kinematic region extending down to x=6×10-5 and Q2=0.01GeV2. The data were taken with a dedicated low x trigger, which required hadron detection in addition to the scattered muon, so as to reduce the background at low x. The results complement our previous measurements and the two sets are consistent in the overlap region. No significant spin effects are found in the newly explored region.
© 1999 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevD.60.072004
DOI:
10.1103/PhysRevD.60.072004
*Present address: The Royal Library, S-102 41 Stockholm, Sweden. †Present address: University of California, Department of Physics, Los Angeles, CA 90024; USA permanent address: CERN, C4-1211 Geneva 23, Switzerland. ‡Present address: University of Virginia, Department of Physics, Charlottesville, VA 22901. kPresent address: Texas Technical University, Lubbock, TX 79409-1051. **Present address: CIEMAT, Avda Complutense 22, E-28040, Madrid, Spain. §Present address: Fermi National Accelerator Laboratory, Batavia, IL 60510. ††Present address: University of Wisconsin, Madison, WI 53706. ‡‡Present address: NIKHEF, 1009 AJ Amsterdam, The Netherlands. aPresent address: Bristol University, Bristol, BS8 1TL United Kingdom. bPresent address: Brookhaven National Laboratory, Upton, NY 11973. cPermanent address: Miyazaki University, Faculty of Engineering, 889-21 Miyazaki-Shi, Japan. dPermanent address: Paul Scherrer Institut, CH-5232 Villigen, Switzerland. ePermanent address: The Institute of Physical and Chemical Research (RIKEN), wako 351-01, Japan. fPermanent address: University of California, Institute of Particle Physics, Santa Cruz, CA 95064. gPermanent address: KEK, Tsukuba-Shi, 305 Ibaraki-Ken, Japan. hPresent address: SBC Warburg Dillon Read, CH-4002 Basel, Switzerland. iPresent address: CERN, CH-1211 Geneva 23, Switzerland. jPresent address: Pennsylvania State University, University Park, PA 16802. lPermanent address: University of Buenos Aires, Physics Department, 1428 Buenos Aires, Argentina. mPresent address: Yale University, Department of Physics, New Haven, CT 06520. nPresent Address: CEA Saclay, DAPNIA, F91191 Gif-sur-Yvette, France. oPermanent address: Rice University, Bonner Laboratory, Houston, TX 77251-1892. pPermanent address: Warsaw University of Technology, PL-00-665 Warsaw, Poland. qPresent address: F. Hoffmann-La Roche Ltd., CH-4070 Basel, Switzerland. rPresent address: Oak Ridge National Laboratory, Oak Ridge, TN 37831-6393.
See Also
Erratum:
B. Adeva et al. (Spin Muon Collaboration),
Erratum: Spin asymmetries A1 of the proton and the deuteron in the low x and low Q2 region from polarized high energy muon scattering [Phys. Rev. D 60, 072004 (1999)],
Phys. Rev. D 62, 079902 (2000).
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