First Direct Observation of Muon Antineutrino Disappearance

Επιστημονική δημοσίευση - Άρθρο Περιοδικού uoadl:3150187 57 Αναγνώσεις

Μονάδα:
Ερευνητικό υλικό ΕΚΠΑ
Τίτλος:
First Direct Observation of Muon Antineutrino Disappearance
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
This Letter reports the first direct observation of muon antineutrino
disappearance. The MINOS experiment has taken data with an accelerator
beam optimized for (nu) over bar (mu) production, accumulating an
exposure of 1.71 x 10(20) protons on target. In the Far Detector, 97
charged current (nu) over bar (mu) events are observed. The
no-oscillation hypothesis predicts 156 events and is excluded at 6.3
sigma. The best fit to oscillation yields vertical bar Delta(m) over bar
(2)vertical bar = [3.36(-0.40)(+0.46)(stat) +/- 0.06(sys)] x 10(-3)
eV(2), sin(2)(2 (theta) over bar) = 0.86(-0.12)(+0.11)(stat) +/-
0.01(syst). The MINOS nu(mu) and (nu) over bar (mu) measurements are
consistent at the 2.0% confidence level, assuming identical underlying
oscillation parameters.
Έτος δημοσίευσης:
10
Συγγραφείς:
Adamson, P.
Andreopoulos, C.
Auty, D. J.
Ayres, D. S. and
Backhouse, C.
Barr, G.
Bishai, M.
Blake, A.
Bock, G. J.
and Boehnlein, D. J.
Bogert, D.
Cavanaugh, S.
Cherdack, D.
and Childress, S.
Choudhary, B. C.
Coelho, J. A. B.
Coleman,
S. J.
Corwin, L.
Cronin-Hennessy, D.
Danko, I. Z.
de
Jong, J. K.
Devenish, N. E.
Diwan, M. V.
Dorman, M. and
Escobar, C. O.
Evans, J. J.
Falk, E.
Feldman, G. J. and
Frohne, M. V.
Gallagher, H. R.
Gomes, R. A.
Goodman, M. C.
and Gouffon, P.
Graf, N.
Gran, R.
Grant, N.
Grzelak, K.
and Habig, A.
Harris, D.
Hartnell, J.
Hatcher, R. and
Himmel, A.
Holin, A.
Howcroft, C.
Huang, X.
Hylen, J.
and Ilic, J.
Irwin, G. M.
Isvan, Z.
Jaffe, D. E.
James,
C.
Jensen, D.
Kafka, T.
Kasahara, S. M. S.
Koizumi, G.
and Kopp, S.
Kordosky, M.
Kreymer, A.
Lang, K.
Lefeuvre,
G.
Ling, J.
Litchfield, P. J.
Loiacono, L.
Lucas, P. and
Mann, W. A.
Marshak, M. L.
Mayer, N.
McGowan, A. M. and
Mehdiyev, R.
Meier, J. R.
Messier, M. D.
Miller, W. H. and
Mishra, S. R.
Mitchell, J.
Moore, C. D.
Morfin, J. and
Mualem, L.
Mufson, S.
Musser, J.
Naples, D.
Nelson, J.
K.
Newman, H. B.
Nichol, R. J.
Nicholls, T. C.
Nowak, J.
A.
Ochoa-Ricoux, J. P.
Oliver, W. P.
Orchanian, M. and
Ospanov, R.
Paley, J.
Patterson, R. B.
Pawloski, G. and
Pearce, G. F.
Petyt, D. A.
Phan-Budd, S.
Plunkett, R. K. and
Qiu, X.
Ratchford, J.
Raufer, T. M.
Rebel, B.
Rodrigues,
P. A.
Rosenfeld, C.
Rubin, H. A.
Sanchez, M. C.
Schneps,
J.
Schreiner, P.
Shanahan, P.
Sousa, A.
Stamoulis, P.
and Strait, M.
Tagg, N.
Talaga, R. L.
Tetteh-Lartey, E. and
Thomas, J.
Thomson, M. A.
Tinti, G.
Toner, R.
Tzanakos,
G.
Urheim, J.
Vahle, P.
Viren, B.
Weber, A.
Webb, R.
C.
White, C.
Whitehead, L.
Wojcicki, S. G.
Yang, T. and
Zwaska, R.
MINOS Collaboration
Περιοδικό:
Physical Review and Physical Review Letters Index
Εκδότης:
AMER PHYSICAL SOC
Τόμος:
107
Αριθμός / τεύχος:
1
Επίσημο URL (Εκδότης):
DOI:
10.1103/PhysRevLett.107.021801
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