Phys. Rev. D
77,
072002
(2008)
[34 pages]
Study of muon neutrino disappearance using the Fermilab Main Injector neutrino beam
P. Adamson et al. MINOS Collaboration
Show All Authors/Affiliations
Hide All Authors/Affiliations
P. Adamson9,18, C. Andreopoulos23, K. E. Arms19, R. Armstrong12, D. J. Auty27, S. Avvakumov26, D. S. Ayres1, B. Baller9, B. Barish5, P. D. Barnes, Jr.17, G. Barr21, W. L. Barrett31, E. Beall1,19,*, B. R. Becker19, A. Belias23, R. H. Bernstein9, D. Bhattacharya22, M. Bishai4, A. Blake6, B. Bock20, G. J. Bock9, J. Boehm10, D. J. Boehnlein9, D. Bogert9, P. M. Border19, C. Bower12, E. Buckley-Geer9, A. Cabrera21,†, S. Cavanaugh10, J. D. Chapman6, D. Cherdack30, S. Childress9, B. C. Choudhary9,‡, J. H. Cobb21, S. J. Coleman32, A. J. Culling6, J. K. de Jong11, M. Dierckxsens4, M. V. Diwan4, M. Dorman18,23, D. Drakoulakos2, T. Durkin23, S. A. Dytman22, A. R. Erwin33, C. O. Escobar7, J. J. Evans21, E. Falk Harris27, G. J. Feldman10, T. H. Fields1, R. Ford9, M. V. Frohne3,§, H. R. Gallagher30, A. Godley25, J. Gogos19, M. C. Goodman1, P. Gouffon24, R. Gran20, E. W. Grashorn19,20, N. Grossman9, K. Grzelak21, A. Habig20, D. Harris9, P. G. Harris27, J. Hartnell23, E. P. Hartouni17, R. Hatcher9, K. Heller19, A. Himmel5, A. Holin18, C. Howcroft5, J. Hylen9, D. Indurthy29, G. M. Irwin26, M. Ishitsuka12, D. E. Jaffe4, C. James9, L. Jenner18, D. Jensen9, T. Kafka30, H. J. Kang26, S. M. S. Kasahara19, M. S. Kim22, G. Koizumi9, S. Kopp29, M. Kordosky32,18,**, D. J. Koskinen18, S. K. Kotelnikov16, A. Kreymer9, S. Kumaratunga19, K. Lang29, A. Lebedev10, R. Lee10,††, J. Ling25, J. Liu29, P. J. Litchfield19, R. P. Litchfield21, L. Loiacono29, P. Lucas9, W. A. Mann30, A. Marchionni9, A. D. Marino9, M. L. Marshak19, J. S. Marshall6, N. Mayer12,20, A. M. McGowan1,19,‡‡, J. R. Meier19, G. I. Merzon16, M. D. Messier12, C. J. Metelko23, D. G. Michael5,a, R. H. Milburn30, J. L. Miller15,a, W. H. Miller19, S. R. Mishra25, A. Mislivec20, C. D. Moore9, J. Morfín9, L. Mualem5,19, S. Mufson12, S. Murgia26, J. Musser12, D. Naples22, J. K. Nelson32, H. B. Newman5, R. J. Nichol18, T. C. Nicholls23, J. P. Ochoa-Ricoux5, W. P. Oliver30, T. Osiecki29, R. Ospanov29, J. Paley12, V. Paolone22, A. Para9, T. Patzak8, Ž. Pavlović29, G. F. Pearce23, C. W. Peck5, E. A. Peterson19, D. A. Petyt19, H. Ping33, R. Pittam21, R. K. Plunkett9, D. Rahman19, R. A. Rameika9, T. M. Raufer23,21, B. Rebel9, J. Reichenbacher1, D. E. Reyna1, P. A. Rodrigues21, C. Rosenfeld25, H. A. Rubin11, K. Ruddick19, V. A. Ryabov16, R. Saakyan18, M. C. Sanchez10, N. Saoulidou9, J. Schneps30, P. Schreiner3, V. K. Semenov13, S.-M. Seun10, P. Shanahan9, W. Smart9, V. Smirnitsky14, C. Smith18,27, A. Sousa21,30, B. Speakman19, P. Stamoulis2, M. Strait19, P. A. Symes27, N. Tagg30,21, R. L. Talaga1, E. Tetteh-Lartey28, J. Thomas18, J. Thompson22,a, M. A. Thomson6, J. L. Thron1,b, G. Tinti21, I. Trostin14, V. A. Tsarev16, G. Tzanakos2, J. Urheim12, P. Vahle32,18, V. Verebryusov14, B. Viren4, C. P. Ward6, D. R. Ward6, M. Watabe28, A. Weber21,23, R. C. Webb28, A. Wehmann9, N. West21, C. White11, S. G. Wojcicki26, D. M. Wright17, T. Yang26, H. Zheng5, M. Zois2, and R. Zwaska9 (MINOS Collaboration)
1Argonne National Laboratory, Argonne, Illinois 60439, USA
2Department of Physics, University of Athens, GR-15771 Athens, Greece
3Physics Department, Benedictine University, Lisle, Illinois 60532, USA
4Brookhaven National Laboratory, Upton, New York 11973, USA
5Lauritsen Laboratory, California Institute of Technology, Pasadena, California 91125, USA
6Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, United Kingdom
7Universidade Estadual de Campinas, IF-UNICAMP, CP 6165, 13083-970, Campinas, SP, Brazil
8APC – Université Paris 7 Denis Diderot, Paris Cedex 13, France
9Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA
10Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA
11Physics Division, Illinois Institute of Technology, Chicago, Illinois 60616, USA
12Indiana University, Bloomington, Indiana 47405, USA
13Institute for High Energy Physics, Protvino, Moscow Region RU-140284, Russia
14High Energy Experimental Physics Department, Institute of Theoretical and Experimental Physics, B. Cheremushkinskaya, 25, 117218 Moscow, Russia
15Physics Department, James Madison University, Harrisonburg, Virginia 22807, USA
16Nuclear Physics Department, Lebedev Physical Institute, Leninsky Prospect 53, 117924 Moscow, Russia
17Lawrence Livermore National Laboratory, Livermore, California 94550, USA
18Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, United Kingdom
19University of Minnesota, Minneapolis, Minnesota 55455, USA
20Department of Physics, University of Minnesota– Duluth, Duluth, Minnesota 55812, USA
21Subdepartment of Particle Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford OX1 3RH, United Kingdom
22Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA
23Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire, OX11 0QX, United Kingdom
24Instituto de Física, Universidade de São Paulo, CP 66318, 05315-970, São Paulo, SP, Brazil
25Department of Physics and Astronomy, University of South Carolina, Columbia, South Carolina 29208, USA
26Department of Physics, Stanford University, Stanford, California 94305, USA
27Department of Physics and Astronomy, University of Sussex, Falmer, Brighton BN1 9QH, United Kingdom
28Physics Department, Texas A&M University, College Station, Texas 77843, USA
29Department of Physics, University of Texas, Austin, Texas 78712, USA
30Physics Department, Tufts University, Medford, Massachusetts 02155, USA
31Physics Department, Western Washington University, Bellingham, Washington 98225, USA
32Department of Physics, College of William & Mary, Williamsburg, Virginia 23187, USA
33Physics Department, University of Wisconsin, Madison, Wisconsin 53706, USA
Received 7 November 2007; published 4 April 2008
We report the results of a search for νμ disappearance by the Main Injector Neutrino Oscillation Search [ D. G. Michael et al. Phys. Rev. Lett. 97 191801 (2006)]. The experiment uses two detectors separated by 734 km to observe a beam of neutrinos created by the Neutrinos at the Main Injector facility at Fermi National Accelerator Laboratory. The data were collected in the first 282 days of beam operations and correspond to an exposure of 1.27×1020 protons on target. Based on measurements in the Near Detector, in the absence of neutrino oscillations we expected 336±14 νμ charged-current interactions at the Far Detector but observed 215. This deficit of events corresponds to a significance of 5.2 standard deviations. The deficit is energy dependent and is consistent with two-flavor neutrino oscillations according to |Δm2|=2.74-0.26+0.44×10-3 eV2/c4 and sin22θ>0.87 at 68% confidence level.
© 2008 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevD.77.072002
DOI:
10.1103/PhysRevD.77.072002
PACS:
14.60.Pq, 14.60.Lm, 29.27.−a, 29.30.−h
*Now at Cleveland Clinic, Cleveland, Ohio 44195, USA. †Now at APC – Université Paris 7 Denis Diderot, Paris Cedex 13, France. ‡Now at Dept. of Physics and Astrophysics, University of Delhi, Delhi 110007, India. §Now at Holy Cross College, Notre Dame, Indiana 46556, USA. **Author to whom correspondence should be addressed. Department of Physics, College of William and Mary, Williamsburg, VA 23185, USA. makordosky@wm.edu ††Now at Lincoln Laboratory, MA Institute of Technology, Lexington, Massachusetts 02420, USA. ‡‡Now at Physics Department, St. John Fisher College, Rochester, New York 14618 USA. aDeceased. bNow at Nuclear Nonproliferation Division, Threat Reduction Directorate, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
|
|
