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First observation of coherent π0 production in neutrino-nucleus interactions with Eν < 2 GeV

被引：88
作者：
Aguilar-Arevalo, A. A.
Anderson, C. E.
Bazarko, A. O.
Brice, S. J.
Brown, B. C.
Bugel, L.
Cao, J.
Coney, L.
Conrad, J. M.
Cox, D. C.
Curioni, A.
Djurcic, Z.
Finley, D. A.
Fleming, B. T.
Ford, R.
Garcia, F. G.
Garvey, G. T.
Green, C.
Green, J. A.
Hart, T. L.
Hawker, E.
Imlay, R.
Johnson, R. A.
Karagiori, G.
Kasper, P.
Katorri, T.
Kobilarcik, I.
Kourbanis, I.
Koutsoliotas, S.
Laird, E. M.
Linden, S. K.
Link, J. M. [1 ]
Liu, Y.
Liu, Y.
Louis, W. C.
Mahn, K. B. M.
Marsh, W.
Martin, P. S.
McGregor, G.
Metcalf, W.
Meyers, P. D.
Mills, F.
Mills, G. B.
Monroe, J.
Moore, C. D.
Nelson, R. H.
Nguyen, V.
Nienaber, P.
Nowak, J. A.
Ouedraogo, S.
机构：
[1] Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA
[2] Yale Univ, New Haven, CT 06520 USA
[3] St Marys Univ, Winona, MN 55987 USA
[4] Princeton Univ, Princeton, NJ 08544 USA
[5] Univ Michigan, Ann Arbor, MI 48109 USA
[6] Louisiana State Univ, Baton Rouge, LA 70803 USA
[7] Los Alamos Natl Lab, Los Alamos, NM 87545 USA
[8] Indiana Univ, Bloomington, IN 47405 USA
[9] Univ Florida, Gainesville, FL 32611 USA
[10] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA
[11] Embry Riddle Aeronaut Univ, Prescott, AZ 86301 USA
[12] Columbia Univ, New York, NY 10027 USA
[13] Univ Colorado, Boulder, CO 80309 USA
[14] Univ Cincinnati, Cincinnati, OH 45221 USA
[15] Bucknell Univ, Lewisburg, PA 17837 USA
[16] Univ Alabama, Tuscaloosa, AL 35487 USA
来源：
PHYSICS LETTERS B | 2008年 / 664卷 / 1-2期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1016/j.physletb.2008.05.006
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The MiniBooNE experiment at Fermilab has amassed the largest sample to date of pi(0)s produced in neutral current (NC) neutrino-nucleus interactions at low energy. This Letter reports a measurement of the momentum distribution of pi(0)s produced in mineral oil (CH2) and the first observation of coherent pi(0) production below 2 GeV. In the forward direction, the yield of events observed above the expectation for resonant production is attributed primarily to coherent production off carbon, but may also include a small contribution from diffractive production on hydrogen. Integrated over the MiniBooNE neutrino flux, the sum of the NC coherent and diffractive modes is found to be (19.5 +/- 1.1 (stat) +/- 2.5(sys))% of all exclusive NC pi(0) production at MiniBooNE. These measurements are of immediate utility because they quantify an important background to MiniBooNE's search for nu(mu) -> nu(e) oscillations. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：41 / 46
页数：6
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