利用NuMI中微子束的MINOS探测器对μ子中微子消失的观测。
Observation of muon neutrino disappearance with the MINOS detectors in the NuMI neutrino beam.
作者信息
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, 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, Courant H, Crane D A, Culling A J, Dawson J W, de Jong J K, DeMuth D M, De Santo A, Dierckxsens M, Diwan M V, Dorman M, Drake G, Drakoulakos D, Ducar R, Durkin T, Erwin A R, Escobar C O, Evans J J, Fackler O D, Falk Harris E, Feldman G J, Felt N, Fields T H, Ford R, Frohne M V, Gallagher H R, Gebhard M, Giurgiu G A, Godley A, Gogos J, Goodman M C, Gornushkin Yu, Gouffon P, Gran R, Grashorn E, Grossman N, Grudzinski J J, Grzelak K, Guarino V, Habig A, Halsall R, Hanson J, Harris D, Harris P G, Hartnell J, Hartouni E P, Hatcher R, Heller K, Hill N, Ho Y, Holin A, Howcroft C, Hylen J, Ignatenko M, Indurthy D, Irwin G M, Ishitsuka M, Jaffe D E, James C, Jenner L, Jensen D, Joffe-Minor T, Kafka T, Kang H J, Kasahara S M S, Kilmer J, Kim H, Kim M S, Koizumi G, Kopp S, Kordosky M, Koskinen D J, Kostin M, Kotelnikov S K, Krakauer D A, Kreymer A, Kumaratunga S, Ladran A S, Lang K, Laughton C, Lebedev A, Lee R, Lee W Y, Libkind M A, Ling J, Liu J, Litchfield P J, Litchfield R P, Longley N P, Lucas P, Luebke W, Madani S, Maher E, Makeev V, Mann W A, Marchionni A, Marino A D, Marshak M L, Marshall J S, Mayer N, McDonald J, McGowan A M, Meier J R, Merzon G I, Messier M D, Milburn R H, Miller J L, Miller W H, Mishra S R, Mislivec A, Miyagawa P S, Moore C D, Morfín J, Morse R, Mualem L, Mufson S, Murgia S, Murtagh M J, Musser J, Naples D, Nelson C, Nelson J K, Newman H B, Nezrick F, Nichol R J, Nicholls T C, Ochoa-Ricoux J P, Oliver J, Oliver W P, Onuchin V A, Osiecki T, Ospanov R, Paley J, Paolone V, Para A, Patzak T, Pavlović Z, Pearce G F, Pearson N, Peck C W, Perry C, Peterson E A, Petyt D A, Ping H, Piteira R, Pittam R, Pla-Dalmau A, Plunkett R K, Price L E, Proga M, Pushka D R, Rahman D, Rameika R A, Raufer T M, Read A L, Rebel B, Reichenbacher J, Reyna D E, Rosenfeld C, Rubin H A, Ruddick K, Ryabov V A, Saakyan R, Sanchez M C, Saoulidou N, Schneps J, Schoessow P V, Schreiner P, Schwienhorst R, Semenov V K, Seun S-M, Shanahan P, Shield P D, Smart W, Smirnitsky V, Smith C, Smith P N, Sousa A, Speakman B, Stamoulis P, Stefanik A, Sullivan P, Swan J M, Symes P A, Tagg N, Talaga R L, Terekhov A, Tetteh-Lartey E, Thomas J, Thompson J, Thomson M A, Thron J L, Tinti G, Trendler R, Trevor J, Trostin I, Tsarev V A, Tzanakos G, Urheim J, Vahle P, Vakili M, Vaziri K, Velissaris C, Verebryusov V, Viren B, Wai L, Ward C P, Ward D R, Watabe M, Weber A, Webb R C, Wehmann A, West N, White C, White R F, Wojcicki S G, Wright D M, Wu Q K, Yan W G, Yang T, Yumiceva F X, Yun J C, Zheng H, Zois M, Zwaska R
机构信息
Lauritsen Laboratory, California Institute of Technology, Pasadena, CA 91125, USA.
出版信息
Phys Rev Lett. 2006 Nov 10;97(19):191801. doi: 10.1103/PhysRevLett.97.191801. Epub 2006 Nov 8.
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 1.27 x 10(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 |Delta(m)2/32|=2.74 +0.44/-0.26 x10(-3)eV(2) and sin(2)(2theta(23))>0.87 (68% C.L.).
本信函报告了MINOS实验基于其对费米实验室NuMI束流中微子的初始曝光所得到的结果。在沿束流轴距离分别为1千米和735千米的两个探测器中，对带电轻子流μ中微子相互作用的速率和能谱进行了比较。有1.27×10²⁰个120 GeV的质子入射到NuMI靶上，在远探测器处观测到215个能量低于30 GeV的事例，而预期为336±14个事例。数据与通过振荡导致的μ中微子消失相符，其中|Δ(m)²/32| = 2.74 +0.44/-0.26×10⁻³ eV²，且sin²(2θ₂₃)>0.87（68%置信水平）。
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