Production properties of K*(892)±:: vector mesons and their spin alignment as measured in the NOMAD experiment

被引:0
|
作者
Chukanov, A. [1 ]
Naumov, D.
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.
Cattaneo, P. W.
Cavasinnil, V.
Cervera-Villanueva, A.
Challis, R.
Collazuol, G.
Conforto, G.
Conta, C.
Contalbrigo, M.
Cousins, R.
Daniels, D.
Degaudenzi, H.
Del Pretel, T.
De Santo, A.
Dignan, T.
Di Lella, L.
do Couto e Silva, E.
Dumarchez, J.
Ellis, M.
Feldman, G. J.
Ferrari, R.
Ferrere, D.
Flaminio, V.
Fraternali, M.
Gaillard, J. -M.
Gangler, E.
Geiser, A.
Geppert, D.
Gibin, D.
Gninenko, S.
Godleyl, A.
机构
[1] JINR, Dubna, Russia
[2] LAPP, Annecy, France
[3] Johns Hopkins Univ, Baltimore, MD USA
[4] Harvard Univ, Cambridge, MA 02138 USA
[5] Univ Calabria, I-87036 Cosenza, Italy
[6] Ist Nazl Fis Nucl, Cosenza, Italy
[7] Univ Dortmund, Dortmund, Germany
[8] Univ Florence, Florence, Italy
[9] Ist Nazl Fis Nucl, I-50125 Florence, Italy
[10] CERN, Geneva, Switzerland
[11] Univ Lausanne, Lausanne, Switzerland
[12] Univ Calif Los Angeles, Los Angeles, CA USA
[13] Univ Melbourne, Melbourne, Vic, Australia
[14] Inst Nucl Res, Moscow, Russia
[15] Univ Padua, Padua, Italy
[16] Ist Nazl Fis Nucl, Padua, Italy
[17] Univ Paris 06, LPNHE, Paris, France
[18] Univ Paris 07, Paris, France
[19] Univ Pavia, LPNHE, I-27100 Pavia, Italy
[20] Ist Nazl Fis Nucl, I-27100 Pavia, Italy
[21] Univ Pisa, Pisa, Italy
[22] Ist Nazl Fis Nucl, Pisa, Italy
[23] Roma Univ 3, Rome, Italy
[24] Ist Nazl Fis Nucl, Rome, Italy
[25] Univ S Carolina, Columbia, SC 29208 USA
[26] Univ Sydney, Sydney, NSW 2006, Australia
[27] Ist Nazl Fis Nucl, I-50125 Florence, Italy
[28] Univ Urbino, I-61029 Urbino, Italy
[29] IFIC, Valencia, Spain
[30] Rudjer Boskovic Inst, Zagreb, Croatia
[31] ETH, Zurich, Switzerland
来源
EUROPEAN PHYSICAL JOURNAL C | 2006年 / 46卷 / 01期
基金
美国国家科学基金会;
关键词
D O I
10.1140/epjc/s2006-02500-4
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
First measurements of K*(892)(+/-): mesons production properties and their spin alignment in upsilon(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 K-0 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 v 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 rho(00) parameter, 0.40 +/- 0.06(stat.)+/- 0.03(syst.) and 0.28 +/- 0.07(stat.)+/- 0.03(syst.) for K* (892)(+) and K*(892)(-) produced in vi, CC interactions, are compared to theoretical predictions tuned on LEP measurements in e(+)e(-) annihilation at the Z(0) pole. For K*(892)(+) mesons produced in nu NC interactions the measured rho(00) parameter is 0.66 +/- 0.10 (stat.) +/- 0.05 (syst.).
引用
收藏
页码:69 / 79
页数:11
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