Search for electron neutrino appearance in a 250 km long-baseline experiment

被引：46

作者：

Ahn, MH ^{[1
]}

Aoki, S

Ashie, Y

Bhang, H

Boyd, S

Casper, D

Choi, JH

Fukuda, S

Fukuda, Y

Gran, R

Hara, T

Hasegawa, M

Hasegawa, T

Hayashi, K

Hayato, Y

Hill, J

Ichikawa, AK

Ikeda, A

Inagaki, T

Ishida, T

Ishii, T

Ishitsuka, M

Itow, Y

Iwashita, T

Jang, HI

Jang, JS

Jeon, EJ

Joo, KK

Jung, CK

Kajita, T

Kameda, J

Kaneyuki, K

Kato, I

Kearns, E

Kibayashi, A

Kielczewska, D

Kim, BJ

Kim, CO

Kim, JY

Kim, SB

Kobayashi, K

Kobayashi, T

Koshio, Y

Kropp, WR

Learned, JG

Lim, SH

Lim, IT

Maesaka, H

Maruyama, T

Matsuno, S

机构：

[1] Seoul Natl Univ, Dept Phys, Seoul 151742, South Korea

[2] Kobe Univ, Kobe, Hyogo 6578501, Japan

[3] Univ Tokyo, Inst Cosm Ray Res, Chiba 2778582, Japan

[4] Univ Washington, Dept Phys, Seattle, WA 98195 USA

[5] Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA

[6] Chonnam Natl Univ, Dept Phys, Kwangju 500757, South Korea

[7] Miyagi Univ Educ, Dept Phys, Sendai, Miyagi 9800845, Japan

[8] Kyoto Univ, Dept Phys, Kyoto 6068502, Japan

[9] Tohoku Univ, Res Ctr Neutrino Sci, Sendai, Miyagi 9808578, Japan

[10] High Energy Accelerator Res Org, Tsukuba, Ibaraki 3050801, Japan

[11] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA

[12] Okayama Univ, Dept Phys, Okayama 7008530, Japan

[13] Boston Univ, Dept Phys, Boston, MA 02215 USA

[14] Univ Hawaii, Dept Phys & Astron, Honolulu, HI 96822 USA

[15] Univ Warsaw, Inst Expt Phys, PL-00681 Warsaw, Poland

[16] A Soltan Inst Nucl Studies, PL-00681 Warsaw, Poland

[17] Korea Univ, Dept Phys, Seoul 136701, South Korea

[18] Niigata Univ, Dept Phys, Niigata 9502181, Japan

[19] Dongshin Univ, Dept Phys, Naju 520714, South Korea

[20] MIT, Dept Phys, Cambridge, MA 02139 USA

[21] Tokyo Univ Sci, Dept Phys, Chiba 2780022, Japan

[22] Osaka Univ, Dept Phys, Osaka 5600043, Japan

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 05期

基金：

新加坡国家研究基金会; 日本学术振兴会;

关键词：

D O I：

10.1103/PhysRevLett.93.051801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present a search for electron neutrino appearance from accelerator-produced muon neutrinos in the K2K long-baseline neutrino experiment. One candidate event is found in the data corresponding to an exposure of 4.8x10(19) protons on target. The expected background in the absence of neutrino oscillations is estimated to be 2.4+/-0.6 events and is dominated by misidentification of events from neutral current pi(0) production. We exclude the nu(mu) to nu(e) oscillations at 90% C.L. for the effective mixing angle in the 2-flavor approximation of sin(2)2theta(mue)(similar or equal to1/2sin(2)2theta(13))>0.15 at Deltam(mue)(2)=2.8x10(-3) eV(2), the best-fit value of the nu(mu) disappearance analysis in K2K. The most stringent limit of sin(2)2theta(mue)<0.09 is obtained at Deltam(mue)(2)=6x10(-3) eV(2).

引用

页码：051801 / 1

页数：5

共 19 条

[1] Direct evidence for neutrino flavor transformation from neutral-current interactions in the Sudbury Neutrino Observatory -: art. no. 011301 [J].

Ahmad, QR ;

Allen, RC ;

Andersen, TC ;

Anglin, JD ;

Barton, JC ;

Beier, EW ;

Bercovitch, M ;

Bigu, J ;

Biller, SD ;

Black, RA ;

Blevis, I ;

Boardman, RJ ;

Boger, J ;

Bonvin, E ;

Boulay, MG ;

Bowler, MG ;

Bowles, TJ ;

Brice, SJ ;

Browne, MC ;

Bullard, TV ;

Bühler, G ;

Cameron, J ;

Chan, YD ;

Chen, HH ;

Chen, M ;

Chen, X ;

Cleveland, BT ;

Clifford, ETH ;

Cowan, JHM ;

Cowen, DF ;

Cox, GA ;

Dai, X ;

Dalnoki-Veress, F ;

Davidson, WF ;

Doe, PJ ;

Doucas, G ;

Dragowsky, MR ;

Duba, CA ;

Duncan, FA ;

Dunford, M ;

Dunmore, JA ;

Earle, ED ;

Elliott, SR ;

Evans, HC ;

Ewan, GT ;

Farine, J ;

Fergani, H ;

Ferraris, AP ;

Ford, RJ ;

Formaggio, JA .

PHYSICAL REVIEW LETTERS, 2002, 89 (01)

[2] Indications of neutrino oscillation in a 250 km long-baseline experiment [J].

Ahn, MH ;

Aoki, S ;

Bhang, H ;

Boyd, S ;

Casper, D ;

Choi, JH ;

Fukuda, S ;

Fukuda, Y ;

Gajewski, W ;

Hara, T ;

Hasegawa, M ;

Hasegawa, T ;

Hayato, Y ;

Hill, J ;

Ichikawa, AK ;

Ikeda, A ;

Inagaki, T ;

Ishida, T ;

Ishii, T ;

Ishitsuka, M ;

Itow, Y ;

Iwashita, T ;

Jang, HI ;

Jang, JS ;

Jeon, EJ ;

Jung, CK ;

Kajita, T ;

Kameda, J ;

Kaneyuki, K ;

Kato, I ;

Kearns, E ;

Kibayashi, A ;

Kielczewska, D ;

Kobayashi, K ;

Kim, BJ ;

Kim, CO ;

Kim, JY ;

Kim, SB ;

Kobayashi, T ;

Kohama, M ;

Koshio, Y ;

Kropp, WR ;

Learned, JG ;

Lim, SH ;

Lim, IT ;

Maesaka, H ;

Martens, K ;

Maruyama, T ;

Matsuno, S ;

Mauger, C .

PHYSICAL REVIEW LETTERS, 2003, 90 (04) :5

[3] Detection of accelerator-produced neutrinos at a distance of 250 km [J].

Ahn, SH ;

An, S ;

Aoki, S ;

Berns, HG ;

Bhang, HC ;

Boyd, S ;

Casper, D ;

Chikamatsu, T ;

Choi, JH ;

Echigo, S ;

Etoh, M ;

Fujii, K ;

Fukuda, S ;

Fukuda, Y ;

Gajewski, W ;

Golebiewska, U ;

Hara, T ;

Hasegawa, T ;

Hayato, Y ;

Hill, J ;

Hong, SJ ;

Ieiri, M ;

Inada, T ;

Inagaki, T ;

Ishida, T ;

Ishii, H ;

Ishii, T ;

Ishino, H ;

Ishitsuka, M ;

Itow, Y ;

Iwashita, T ;

Jang, HI ;

Jang, JS ;

Jeon, EJ ;

Jeong, EM ;

Jung, CK ;

Kadowaki, T ;

Kajita, T ;

Kameda, J ;

Kaneyuki, K ;

Kato, I ;

Kato, Y ;

Kearns, E ;

Kenmochi, S ;

Khang, BH ;

Kibayashi, A ;

Kielczewska, D ;

Kim, BJ ;

Kim, CO ;

Kim, HI .

PHYSICS LETTERS B, 2001, 511 (2-4) :178-184

[4] Search for neutrino oscillations on a long base-line at the CHOOZ nuclear power station [J].

Apollonio, M ;

Baldini, A ;

Bemporad, C ;

Caffau, E ;

Cei, F ;

Déclais, Y ;

de Kerret, H ;

Dieterle, B ;

Etenko, A ;

Foresti, L ;

George, J ;

Giannini, G ;

Grassi, M ;

Kozlov, Y ;

Kropp, W ;

Kryn, D ;

Laiman, M ;

Lane, CE ;

Lefièvre, B ;

Machulin, I ;

Martemyanov, A ;

Martemyanov, V ;

Mikaelyan, L ;

Nicolò, D ;

Obolensky, M ;

Pazzi, R ;

Pieri, G ;

Price, L ;

Riley, S ;

Reeder, R ;

Sabelnikov, A ;

Santin, G ;

Skorokhvatov, M ;

Sobel, H ;

Steele, J ;

Steinberg, R ;

Sukhotin, S ;

Tomshaw, S ;

Veron, D ;

Vyrodov, V .

EUROPEAN PHYSICAL JOURNAL C, 2003, 27 (03) :331-374

[5] GPS time synchronization system for K2K [J].

Berns, HG ;

Wilkes, RJ .

IEEE TRANSACTIONS ON NUCLEAR SCIENCE, 2000, 47 (02) :340-343

[6] Modeling deep inelastic cross sections in the few GeV region [J].

Bodek, A ;

Yang, UK .

NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS, 2002, 112 :70-76

[7] First results from KamLAND: Evidence for reactor antineutrino disappearance [J].

Eguchi, K ;

Enomoto, S ;

Furuno, K ;

Goldman, J ;

Hanada, H ;

Ikeda, H ;

Ikeda, K ;

Inoue, K ;

Ishihara, K ;

Itoh, W ;

Iwamoto, T ;

Kawaguchi, T ;

Kawashima, T ;

Kinoshita, H ;

Kishimoto, Y ;

Koga, M ;

Koseki, Y ;

Maeda, T ;

Mitsui, T ;

Motoki, M ;

Nakajima, K ;

Nakajima, M ;

Nakajima, T ;

Ogawa, H ;

Owada, K ;

Sakabe, T ;

Shimizu, I ;

Shirai, J ;

Suekane, F ;

Suzuki, A ;

Tada, K ;

Tajima, O ;

Takayama, T ;

Tamae, K ;

Watanabe, H ;

Busenitz, J ;

Djurcic, Z ;

McKinny, K ;

Mei, DM ;

Piepke, A ;

Yakushev, E ;

Berger, BE ;

Chan, YD ;

Decowski, MP ;

Dwyer, DA ;

Freedman, SJ ;

Fu, Y ;

Fujikawa, BK ;

Heeger, KM ;

Lesko, KT .

PHYSICAL REVIEW LETTERS, 2003, 90 (02) :6

[8] Unified approach to the classical statistical analysis of small signals [J].

Feldman, GJ ;

Cousins, RD .

PHYSICAL REVIEW D, 1998, 57 (07) :3873-3889

[9] ACCELERATOR AND REACTOR NEUTRINO OSCILLATION EXPERIMENTS IN A SIMPLE 3-GENERATION FRAMEWORK [J].

FOGLI, GL ;

LISI, E ;

SCIOSCIA, G .

PHYSICAL REVIEW D, 1995, 52 (09) :5334-5351

[10] The Super-Kamiokande detector [J].

Fukuda, S ;

Fukuda, Y ;

Hayakawa, T ;

Ichihara, E ;

Ishitsuka, M ;

Itow, Y ;

Kajita, T ;

Kameda, J ;

Kaneyuki, K ;

Kasuga, S ;

Kobayashi, K ;

Kobayashi, Y ;

Koshio, Y ;

Miura, M ;

Moriyama, S ;

Nakahata, M ;

Nakayama, S ;

Namba, T ;

Obayashi, Y ;

Okada, A ;

Oketa, M ;

Okumura, K ;

Oyabu, T ;

Sakurai, N ;

Shiozawa, M ;

Suzuki, Y ;

Takeuchi, Y ;

Toshito, T ;

Totsuka, Y ;

Yamada, S ;

Desai, S ;

Earl, M ;

Hong, JT ;

Kearns, E ;

Masuzawa, M ;

Messier, MD ;

Stone, JL ;

Sulak, LR ;

Walter, CW ;

Wang, W ;

Scholberg, K ;

Barszczak, T ;

Casper, D ;

Liu, DW ;

Gajewski, W ;

Halverson, PG ;

Hsu, J ;

Kropp, WR ;

Mine, S ;

Price, LR .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2003, 501 (2-3) :418-462

← 1 2 →