High statistics search for nu(mu)((nu)over-bar(mu))->nu(e)((nu)over-bar(e)) oscillations in the small mixing angle regime

被引：85

作者：

Romosan, A

Arroyo, CG

deBarbaro, L

deBarbaro, P

Bazarko, AO

Bernstein, RH

Bodek, A

Bolton, T

Budd, H

Conrad, J

Drucker, RB

Harris, DA

Johnson, RA

Kim, JH

King, BJ

Kinnel, T

Lamm, MJ

Lefmann, WC

Marsh, W

McFarland, KS

McNulty, C

Mishra, SR

Naples, D

Quintas, PZ

Sakumoto, WK

Schellman, H

Sciulli, FJ

Seligman, WG

Shaevitz, MH

Smith, WH

Spentzouris, P

Stern, EG

Vakili, M

Yang, UK

Yu, J

机构：

[1] UNIV CINCINNATI,CINCINNATI,OH 45221

[2] FERMILAB NATL ACCELERATOR LAB,BATAVIA,IL 60510

[3] KANSAS STATE UNIV,MANHATTAN,KS 66506

[4] NORTHWESTERN UNIV,EVANSTON,IL 60208

[5] UNIV OREGON,EUGENE,OR 97403

[6] UNIV ROCHESTER,ROCHESTER,NY 14627

[7] UNIV WISCONSIN,MADISON,WI 53706

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 78卷 / 15期

关键词：

D O I：

10.1103/PhysRevLett.78.2912

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Limits on nu(mu)(<(nu)over bar>(mu)) <----> nu(e)(<(nu)over bar>(e)) oscillations based on a statistical separation of nu(e)N charged current interactions in the CCFR detector al Fermilab are presented. Neutrino energies range from 30 to 600 GeV with a mean of 140 GeV, and nu(mu), flight lengths vary from 0.9 to 1.4 km. The result excludes oscillations in the region with sin(2) 2 alpha > 1.8 x 10(-3) for large Delta m(2) (>1000 eV(2)) and Delta m(2) > 1.6 eV(2) for sin(2) 2 alpha = 1. This result is the most stringent limit to date for Delta m(2) > 25 eV(2) and it excludes the high Delta m(2) oscillation region favored by the LSND experiment. The nu(mu)-to-nu(e) cross-section ratio was measured as a test of nu(mu)(<(nu)over bar>(mu) <----> nu(e) (<(nu)over bar>(e)) universality to be 1.026 +/- 0.025(stat) +/- 0.049(syst).

引用

页码：2912 / 2915

页数：4

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