Final NOMAD results on νμ → ντ and νe → ντ oscillations including a new search for ντ appearance using hadronic τ decays

被引：133

作者：

Astier, P ^{[1
]}

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, PW

Cavasinni, V

Cervera-Villanueva, A

Chukanov, 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] Univ Paris 06, LPNHE, Paris, France

[2] Univ Paris 07, LPNHE, Paris, France

[3] LAPP, Annecy Le Vieux, France

[4] Johns Hopkins Univ, Baltimore, MD USA

[5] Harvard Univ, Cambridge, MA 02138 USA

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

[7] Ist Nazl Fis Nucl, Cosenza, Italy

[8] Univ Dortmund, Dortmund, Germany

[9] Joint Inst Nucl Res Dubna, Dubna, Russia

[10] Univ Florence, Florence, Italy

[11] Ist Nazl Fis Nucl, I-50125 Florence, Italy

[12] CERN, Geneva, Switzerland

[13] Univ Lausanne, Lausanne, Switzerland

[14] Univ Calif Los Angeles, Los Angeles, CA USA

[15] Univ Melbourne, Melbourne, Vic, Australia

[16] INR, Moscow, Russia

[17] Univ Padua, Padua, Italy

[18] Ist Nazl Fis Nucl, Padua, Italy

[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] INFN Florence, Florence, Italy

[29] IFIC, Valencia, Spain

[30] Rudjer Boskovic Inst, Zagreb, Croatia

[31] Swiss Fed Inst Technol, Zurich, Switzerland

来源：

NUCLEAR PHYSICS B | 2001年 / 611卷 / 1-3期

基金：

美国国家科学基金会; 俄罗斯基础研究基金会; 澳大利亚研究理事会;

关键词：

appearance; neutrino mass; neutrino oscillations;

D O I：

10.1016/S0550-3213(01)00339-X

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：

Results from the v, appearance search in a neutrino beam using the full NOMAD data sample are reported. A new analysis unifies all the hadronic tau decays, significantly improving the overall sensitivity of the experiment to oscillations. The "blind analysis" of all topologies yields no evidence for an oscillation signal. In the two-family oscillation scenario, this sets a 90% CL allowed region in the sin(2)2 theta (mu tau)-Deltam(2) plane which includes sin(2)2 theta (mu tau) < 3.3 x 10(-4) at large Deltam(2) and Deltam(2) < 0.7 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 (l tau) < 1.5 x 10(-2) at large Deltam(2) and Deltam(2) < 5.9 eV(2)/c(4) at sin(2) 2 theta (l tau) = 1. We also derive limits on effective couplings of the tau lepton to nu (mu) or nu (l). (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：3 / 39

页数：37

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