Updated results from the ντ appearance search in NOMAD

被引：24

作者：

Astier, P ^{[1
]}

Autiero, D

Baldisseri, A

Baldo-Ceolin, M

Ballocchi, G

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, PW

Cavasinni, V

Cervera-Villanueva, A

Collazuol, G

Conforto, G

Conta, C

Contalbrigo, M

Cousins, R

Daniels, D

Degaudenzi, H

Del Prete, T

De Santo, A

Dignan, T

Di Lella, L

Silva, EDE

Dumarchez, J

Ellis, M

Feldman, GJ

Ferrari, R

Ferrère, D

Flaminio, V

Fraternali, M

Gaillard, JM

Gangler, E

Geiser, A

Geppert, D

Gibin, D

Gninenko, S

Godley, A

Gomez-Cadenas, JJ

Gosset, J

Gössling, C

机构：

[1] LAPP, Annecy, France

[2] Johns Hopkins Univ, Baltimore, MD 21218 USA

[3] Harvard Univ, Cambridge, MA 02138 USA

[4] Univ Calabria, I-87036 Cosenza, Italy

[5] Ist Nazl Fis Nucl, I-87036 Cosenza, Italy

[6] Univ Dortmund, Dortmund, Germany

[7] JINR, Dubna, Russia

[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 90024 USA

[13] Univ Melbourne, Melbourne, Vic, Australia

[14] Russian Acad Sci, 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, 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 Tre Univ, 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] Univ Urbino, I-61029 Urbino, Italy

[28] IFIC, Valencia, Spain

[29] Rudjer Boskovic Inst, Zagreb, Croatia

[30] Swiss Fed Inst Technol, Zurich, Switzerland

来源：

PHYSICS LETTERS B | 2000年 / 483卷 / 04期

基金：

俄罗斯基础研究基金会; 美国国家科学基金会; 澳大利亚研究理事会;

关键词：

neutrino oscillations;

D O I：

10.1016/S0370-2693(00)00611-0

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Updated results from the appearance searches for nu(mu) --> nu(tau) and nu(e) --> nu(tau) oscillations in the full NOMAD data sample are reported. The increased data and the use of more refined kinematic schemes for the nu(tau) CC selection allow a significant improvement of the overall sensitivity. The "blind analysis" of both the deep-inelastic and the low multiplicity samples yields no evidence for an oscillation signal. In the two-family oscillation scenario, this sets a 90% C.L. region in the sin(2)2 theta(mu tau) - Delta m(2) plane which includes sin(2)2 theta(mu tau) < 4.4 X 10(-4) at large Delta m(2) and Delta m(2) < 0.8 eV(2)/c(4) at sin(2)2 theta(mu tau) = 1. The corresponding contour in the nu(e) --> nu(tau) oscillation hypothesis results in sin(2)2 theta(e tau) < 2.2 X 10(-2) at large Delta m(2) and Delta m(2) < 6.5 eV(2)/c(4) at sin(2)2 theta(e tau) = 1. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：387 / 404

页数：18

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