Spin asymmetries $A_1$ of the proton and the deuteron in the low $x$ and low $Q^2$ region from polarized high energy muon scattering

We present the results of the spin asymmetries $A_1$ of the proton and the deuteron in the kinematic region extending down to $x=6\cdot 10^{-5}$ and $Q^2=0.01$ GeV$^2$. The data were taken with a dedicated low $x$ trigger, which required hadron detection in addition to the scattered muon, so as to r...

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Detalles Bibliográficos
Autores principales: Adeva, B, Arik, E, Arvidson, A, Badelek, B, Baum, G, Berglund, P, Betev, L, De Botton, N R, Bradamante, Franco, Bravar, A, Bültmann, S, Burtin, E, Crabb, D, Cranshaw, J, Çuhadar-Dönszelmann, T, Dalla Torre, S, Van Dantzig, R, Derro, B R, Deshpande, A A, Dhawan, S K, Dulya, C M, Eichblatt, S, Fasching, D, Feinstein, F, Fernández, C, Frois, Bernard, Gallas, A, Garzón, J A, Gilly, H, Giorgi, M A, von Goeler, E, Görtz, S, Gracia, G, De Groot, N, Grosse-Perdekamp, M, Haft, K, Von Harrach, D, Hasegawa, T, Hautle, P, Hayashi, N, Heusch, C A, Horikawa, N, Hughes, V W, Igo, G, Ishimoto, S, Iwata, T, Kabuss, E M, Karev, A G, Kessler, H J, Ketel, T, Kiryluk, J, Kiselev, Yu F, Krämer, Dietrich, Kröger, W, Kurek, K, Kyynäräinen, J, Lamanna, M, Landgraf, U, Le Goff, J M, Lehár, F, de Lesquen, A, Lichtenstadt, J, Litmaath, M, Magnon, A, Mallot, G K, Marie, F, Martin, A, Martino, J, Matsuda, T, Mayes, B W, McCarthy, J S, Medved, K S, Meyer, W T, Van Middelkoop, G, Miller, D, Miyachi, Y, Mori, K, Moromisato, J H, Nassalski, J P, Niinikoski, T O, Oberski, J, Ogawa, A, Ozben, C, Pereira, H, Perrot-Kunne, F, Peshekhonov, V D, Piegaia, R, Pinsky, L, Platchkov, S K, Pló, M, Pose, D, Postma, H, Pretz, J, Puntaferro, R, Rädel, G, Reicherz, G, Roberts, J, Rodríguez, M, Rondio, Ewa, Sabo, I, Saborido, J, Sandacz, A, Savin, I A, Schiavon, R P, Sichtermann, E P, Simeoni, F, Smirnov, G I, Staude, A, Steinmetz, A, Stiegler, U, Stuhrmann, H B, Tessarotto, F, Thers, D, Tlaczala, W, Tripet, A, Ünel, G, Velasco, M, Vogt, J, Voss, Rüdiger, Whitten, C, Willumeit, R, Windmolders, R, Wislicki, W, Witzmann, A, Zanetti, A M, Zaremba, K, Zhao, J
Lenguaje:eng
Publicado: 1999
Materias:
Particle Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1103/PhysRevD.60.072004
http://cds.cern.ch/record/386072
Descripción
Sumario:We present the results of the spin asymmetries $A_1$ of the proton and the deuteron in the kinematic region extending down to $x=6\cdot 10^{-5}$ and $Q^2=0.01$ GeV$^2$. 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 sig\-ni\-fi\-cant spin effects are found in the newly explored region.

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