First Direct Observation Of Muon Antineutrino Disappearance

Adamson P.; Andreopoulos C.; Auty D.J.; Ayres D.S.; Backhouse C.; Barr G.; Bishai M.; Blake A.; Bock G.J.; Boehnlein D.J.; Bogert D.; Cavanaugh S.; Cherdack D.; 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.; Escobar C.O.; Evans J.J.; Falk E.; Feldman G.J.; Frohne M.V.; Gallagher H.R.; Gomes R.A.; Goodman M.C.; Gouffon P.; Graf N.; Gran R.; Grant N.; Grzelak K.; Habig A.; Harris D.; Hartnell J.; Hatcher R.; Himmel A.; Holin A.; Howcroft C.; Huang X.; Hylen J.; Ilic J.; Irwin G.M.; Isvan Z.; Jaffe D.E.; James C.; Jensen D.; Kafka T.; Kasahara S.M.S.; Koizumi G.; Kopp S.; Kordosky M.; Kreymer A.; Lang K.; Lefeuvre G.; Ling J.; Litchfield P.J.; Loiacono L.; Lucas P.; Mann W.A.; Marshak M.L.; Mayer N.; McGowan A.M.; Mehdiyev R.; Meier J.R.; Messier M.D.; Miller W.H.; Mishra S.R.; Mitchell J.; Moore C.D.; Morfin J.; 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.; Ospanov R.; Paley J.; Patterson R.B.; Pawloski G.; Pearce G.F.; Petyt D.A.; Phan-Budd S.; Plunkett R.K.; 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.; Strait M.; Tagg N.; Talaga R.L.; Tetteh-Lartey E.; 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.; Zwaska R.

Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/107710

Type:	Artigo de periódico
Title:	First Direct Observation Of Muon Antineutrino Disappearance
Author:	Adamson P. Andreopoulos C. Auty D.J. Ayres D.S. Backhouse C. Barr G. Bishai M. Blake A. Bock G.J. Boehnlein D.J. Bogert D. Cavanaugh S. Cherdack D. 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. Escobar C.O. Evans J.J. Falk E. Feldman G.J. Frohne M.V. Gallagher H.R. Gomes R.A. Goodman M.C. Gouffon P. Graf N. Gran R. Grant N. Grzelak K. Habig A. Harris D. Hartnell J. Hatcher R. Himmel A. Holin A. Howcroft C. Huang X. Hylen J. Ilic J. Irwin G.M. Isvan Z. Jaffe D.E. James C. Jensen D. Kafka T. Kasahara S.M.S. Koizumi G. Kopp S. Kordosky M. Kreymer A. Lang K. Lefeuvre G. Ling J. Litchfield P.J. Loiacono L. Lucas P. Mann W.A. Marshak M.L. Mayer N. McGowan A.M. Mehdiyev R. Meier J.R. Messier M.D. Miller W.H. Mishra S.R. Mitchell J. Moore C.D. Morfin J. 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. Ospanov R. Paley J. Patterson R.B. Pawloski G. Pearce G.F. Petyt D.A. Phan-Budd S. Plunkett R.K. 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. Strait M. Tagg N. Talaga R.L. Tetteh-Lartey E. 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. Zwaska R.
Abstract:	This Letter reports the first direct observation of muon antineutrino disappearance. The MINOS experiment has taken data with an accelerator beam optimized for ν̄μ production, accumulating an exposure of 1.71×1020 protons on target. In the Far Detector, 97 charged current ν̄μ events are observed. The no-oscillation hypothesis predicts 156 events and is excluded at 6.3σ. The best fit to oscillation yields \|Δm⊃̄2\|=[3.36-0.40+0.46(stat)±0.06(syst)] ×10⊃-3eV2, ⊃sin⊃2(2θ̄)=0.86-0.12+0.11(stat) ±0.01(syst). The MINOS νμ and ν̄μ measurements are consistent at the 2.0% confidence level, assuming identical underlying oscillation parameters. © 2011 American Physical Society.
Citation:	Physical Review Letters. , v. 107, n. 2, p. - , 2011.
Rights:	aberto
Identifier DOI:	10.1103/PhysRevLett.107.021801
Address:	http://www.scopus.com/inward/record.url?eid=2-s2.0-79961010501&partnerID=40&md5=25f789567d2ac9efdb08ae340df38bf7
Date Issue:	2011
Appears in Collections:	Unicamp - Artigos e Outros Documentos

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