Observation of muon neutrino disappearance with the MINOS detectors in the NuMI neutrino beam

被引：462

作者：

Michael, D. G.

Adamson, P.

Alexopoulos, T.

Allison, W. W. M.

Alner, G. J.

Anderson, K.

Andreopoulos, C.

Andrews, M.

Andrews, R.

Arms, K. E.

Armstrong, R.

Arroyo, C.

Auty, D. J.

Avvakumov, S.

Ayres, D. S.

Baller, B.

Barish, B.

Barker, M. A.

Barnes, P. D., Jr.

Barr, G.

Barrett, W. L.

Beall, E.

Becker, B. R.

Belias, A.

Bergfeld, T.

Bernstein, R. H.

Bhattacharya, D.

Bishai, M.

Blake, A.

Bocean, V.

Bock, B.

Bock, G. J.

Boehm, J.

Boehnlein, D. J.

Bogert, D.

Border, P. M.

Bower, C.

Boyd, S.

Buckley-Geer, E.

Bungau, C.

Byon-Wagner, A.

Cabrera, A.

Chapman, J. D.

Chase, T. R.

Cherdack, D.

Chernichenko, S. K.

Childress, S.

Choudhary, B. C.

Cobb, J. H.

Cossairt, J. D.

机构：

[1] CALTECH, Lauritsen Lab, Pasadena, CA 91125 USA

[2] Argonne Natl Lab, Argonne, IL 60439 USA

[3] Univ Athens, Dept Phys, GR-15771 Athens, Greece

[4] Benedictine Univ, Dept Phys, Lisle, IL 60532 USA

[5] Brookhaven Natl Lab, Upton, NY 11973 USA

[6] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

[7] Univ Estadual Campinas, IF, BR-13083970 Campinas, SP, Brazil

[8] Chinese Acad Sci, Inst High Energy Phys, Beijing 100039, Peoples R China

[9] Coll France, APC, F-75231 Paris 05, France

[10] Columbia Univ, Dept Phys, New York, NY 10027 USA

[11] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA

[12] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA

[13] IIT, Div Phys, Chicago, IL 60616 USA

[14] Indiana Univ, Dept Phys, Bloomington, IN 47405 USA

[15] Inst High Energy Phys, RU-140284 Protvino, Moscow Region, Russia

[16] Inst Theoret & Expt Phys, High Energy Expt Phys Dept, Moscow 117218, Russia

[17] James Madison Univ, Dept Phys, Harrisonburg, VA 22807 USA

[18] Joint Inst Nucl Res, RU-141980 Dubna, Moscow Region, Russia

[19] PN Lebedev Phys Inst, Dept Phys Nucl, Moscow 117924, Russia

[20] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

[21] UCL, Dept Phys & Astron, London WC1E 6BT, England

[22] Univ Minnesota, Minneapolis, MN 55455 USA

[23] Univ Minnesota, Dept Phys, Duluth, MN 55812 USA

[24] Univ Oxford, Subdept Particle Phys, Oxford OX1 3RH, England

[25] Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA

[26] Rutherford Appleton Lab, Didcot OX11 0QX, Oxon, England

[27] Univ Sao Paulo, Inst Fis, BR-05315970 Sao Paulo, Brazil

[28] Univ S Carolina, Dept Phys & Astron, Columbia, SC 29208 USA

[29] Stanford Univ, Dept Phys, Stanford, CA 94305 USA

[30] Univ Sussex, Dept Phys & Astron, Brighton BN1 9QH, E Sussex, England

[31] Texas A&M Univ, Dept Phys, College Stn, TX 77843 USA

[32] Univ Texas, Dept Phys, Austin, TX 78712 USA

[33] Tufts Univ, Dept Phys, Medford, MA 02155 USA

[34] Western Washington Univ, Dept Phys, Bellingham, WA 98225 USA

[35] Coll William & Mary, Dept Phys, Williamsburg, VA 23187 USA

[36] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 97卷 / 19期

基金：

英国科学技术设施理事会;

关键词：

D O I：

10.1103/PhysRevLett.97.191801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

This Letter reports results from the MINOS experiment based on its initial exposure to neutrinos from the Fermilab NuMI beam. The rates and energy spectra of charged current nu(mu) interactions are compared in two detectors located along the beam axis at distances of 1 and 735 km. With 1.27x10(20) 120 GeV protons incident on the NuMI target, 215 events with energies below 30 GeV are observed at the Far Detector, compared to an expectation of 336 +/- 14 events. The data are consistent with nu(mu) disappearance via oscillations with vertical bar Delta m(32)(2)vertical bar=2.74(-0.26)(+0.44)x10(-3) eV(2) and sin(2)(2 theta(23))> 0.87 (68% C.L.).

引用

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