|
Production properties of $K*(892)\pm$ vector mesons and their spin alignment as measured in the NOMAD experiment (2006) |
- Naumov, D.,
- Chukanov, A.,
- Naumova, E.,
- Popov, B.,
- Astier, P.,
- Autiero, D.,
- Baldisseri, A.,
- Baldo-Ceolin, M.,
- Banner, M.,
- Bassompierre, G.,
- Benslama, K.,
- Besson, N.,
- Bird, I.,
- Blumenfeld, B.,
- Bobisut, F.,
- Bouchez, J.,
- Boyd, S.,
- Bueno, A.,
- Bunyatov, S.,
- Camilleri, L.,
- Cardini, A.,
- W. Cattaneo, P.,
- Cavasinni, V.,
- Cervera-Villanueva, A.,
- Challis, R.,
- Collazuol, G.,
- Conforto, G.,
- Conta, C.,
- Contalbrigo, M.,
- Cousins, R.,
- Daniels, D.,
- Das, R.,
- Degaudenzi, H.,
- T. Del, Prete,
- A. De, Santo,
- Dignan, T.,
- Luigi Di, Lella,
- E. Silva E. Do, Couto,
- Dumarchez, J.,
- Ellis, M.,
- J. Feldman, G.,
- Ferrari, R.,
- Ferrère, D.,
- Flaminio, V.,
- Fraternali, M.,
- Gaillard, J.M.,
- Gangler, E.,
- Geiser, A.,
- Geppert, D.,
- Gibin, D.,
- Gninenko, S.,
- Godley, A.,
- J. Gómez-Cadenas, J.,
- Gosset, J.,
- Gössling, C.,
- Gouanère, M.,
- Grant, A.,
- Graziani, G.,
- M. Guglielmi, A.,
- Hagner, C.,
- Hernando, J.,
- M. Hong, T.,
- Hubbard, D.,
- Hurst, P.,
- Hyett, N.,
- Iacopini, E.,
- Joseph, C.,
- Juget, F.,
- Kent, N.,
- Kirsanov, M.,
- Klimov, O.,
- Kokkonen, J.,
- Kovzelev, A.,
- Krasnoperov, A.,
- Lacaprara, S.,
- Lachaud, C.,
- Lakic, B.,
- Lanza, A.,
- L. La, Rotonda,
- Laveder, M.,
- Letessier-Selvon, A.,
- Lévy, J.M.,
- Linssen, L.,
- Ljubicic, A.,
- Long, J.,
- Lupi, A.,
- V. Lyubushkin, V.,
- Marchionni, A.,
- Martelli, F.,
- Méchain, X.,
- Mendiburu, J.P.,
- P. Meyer, J.,
- Mezzetto, M.,
- R. Mishra, S.,
- F. Moorhead, G.,
- Nédélec, P.,
- Nefedov, Yu,
- Nguyen-Mau, C.,
- Orestano, D.,
- Pastore, F.,
- S. Peak, L.,
- Pennacchio, E.,
- Pessard, H.,
- Petti, R.,
- Placci, A.,
- Polesello, G.,
- Pollmann, D.,
- Polyarush, A.,
- Poulsen, C.,
- Rebuffi, L.,
- Rico, J.,
- Roda, C.,
- Rubbia, André,
- Salvatore, F.,
- Schahmaneche, K.,
- Schmidt, B.,
- Schmidt, T.,
- Sconza, A.,
- Sevior, M.,
- Shih, D.,
- Sillou, D.,
- J. P. Soler, F.,
- Sozzi, G.,
- Steele, D.,
- Stiegler, U.,
- Stipcevic, M.,
- Stolarczyk, T.,
- Tareb-Reyes, M.,
- N. Taylor, G.,
- Tereshchenko, V.,
- Toropin, A.,
- M. Touchard, A.,
- N. Tovey, S.,
- T. Tran, M.,
- Tsesmelis, Emmanuel,
- Ulrichs, J.,
- Vacavant, L.,
- Valdata-Nappi, M.,
- Yu Valuev, V.,
- Vannucci, F.,
- E. Varvell, K.,
- Veltri, M.,
- Vercesi, V.,
- Vidal-Sitjes, G.,
- M. Vieira, J.,
- G. Vinogradova, T.,
- V. Weber, F.,
- Weisse, T.,
- F. Wilson, F.,
- J. Winton, L.,
- D. Yabsley, B.,
- Zaccone, H.,
- Zuber, K.,
- Zuccon, P.
|
Abstract |
|
First measurements of K*(892) mesons production properties and their spin alignment in nu_mu charged current (CC) and neutral current (NC) interactions are presented. The analysis of the full data sample of the NOMAD experiment is performed in different kinematic regions. For K*+ and K*- mesons produced in nu_mu CC interactions and decaying into K0 pi+/- we have found the following yields per event: (2.6 +/- 0.2 (stat.) +/- 0.2 (syst.))% and (1.6 +/- 0.1 (stat.) +/- 0.1 (syst.))% respectively, while for the K*+ and K*- mesons produced in nu NC interactions the corresponding yields per event are: (2.5 +/- 0.3 (stat.) +/- 0.3 (syst.))% and (1.0 +/- 0.3 (stat.) +/- 0.2 (syst.))%. The results obtained for the rho00 parameter, 0.40 +/- 0.06 (stat) +/- 0.03 (syst) and 0.28 +/- 0.07 (stat) +/- 0.03 (syst) for K*+ and K*- produced in nu_mu CC interactions, are compared to theoretical predictions tuned on LEP measurements in e+e- annihilation at the Z0 pole. For K*+ mesons produced in nu NC interactions the measured rho00 parameter is 0.66 +/- 0.10 (stat) +/- 0.05 (syst). |
Publication details |
|