Search for a 33.9 MeV/c2 neutral particle in pion decay

被引：17

作者：

Formaggio, JA ^{[1
]}

Zimmerman, ED

Adams, T

Alton, A

Avvakumov, S

de Barbaro, L

de Barbaro, P

Bernstein, RH

Bodek, A

Bolton, T

Brau, J

Buchholz, D

Budd, H

Bugel, L

Case, S

Conrad, JM

Drucker, RB

Fleming, BT

Frey, R

Goldman, J

Goncharov, M

Harris, DA

Johnson, RA

Kim, JH

Koutsoliotas, S

Lamm, MJ

Marsh, W

Mason, D

McFarland, KS

McNulty, C

Naples, D

Nienaber, P

Romosan, A

Sakumoto, WK

Schellman, HM

Shaevitz, MH

Spentzouris, P

Stern, EG

Vakili, M

Vaitaitis, A

Wu, V

Yang, UK

Yu, J

Zeller, GP

机构：

[1] Columbia Univ, New York, NY 10027 USA

[2] Univ Cincinnati, Cincinnati, OH 45221 USA

[3] Fermilab Astrophys Ctr, Batavia, IL 60510 USA

[4] Kansas State Univ, Manhattan, KS 66506 USA

[5] Northwestern Univ, Evanston, IL 60201 USA

[6] Univ Oregon, Eugene, OR 97403 USA

[7] Univ Rochester, Rochester, NY 14627 USA

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 84卷 / 18期

关键词：

D O I：

10.1103/PhysRevLett.84.4043

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The E815 (NnTeV) neutrino experiment has performed a search for a 33.9 MeV/c(2) weakly interacting neutral particle produced in pion decay. Such a particle may be responsible for an anomaly in the timing distribution of neutrino interactions in the KARMEN experiment. E815 has searched for this particle's decays in an instrumented decay region; no evidence for this particle was found. The search is sensitive to pion branching ratios as low as 10(-13).

引用

页码：4043 / 4046

页数：4

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