Search for the decay K+→ π+γγ in the π+ momentum region P > 213 MeV/c

被引：36

作者：

Artamonov, AV

Bassalleck, B

Bhuyan, B

Blackmore, EW

Bryman, DA

Chen, S

Chiang, IH

Christidi, IA

Cooper, PS

Diwan, MV

Frank, JS

Fujiwara, T

Hu, J

Jaffe, DE

Kabe, S

Kettell, SH

Khabibullin, MM

Khotjantsev, AN

Kitching, P

Kobayashi, M

Komatsubara, TK ^{[1
]}

Konaka, A

Kozhevnikov, AP

Kudenko, YG

Kushnirenko, A

Landsberg, LG

Lewis, B

Li, KK

Littenberg, LS

Macdonald, JA

Mildenberger, J

Mineev, OV

Miyajima, M

Mizouchi, K

Mukhin, VA

Muramatsu, N

Nakano, T

Nomachi, M

Nomura, T

Numao, T

Obraztsov, VF

Omata, K

Patalakha, DI

Petrenko, SV

Poutissou, R

Ramberg, EJ

Redlinger, G

Sato, T

Sekiguchi, T

Shinkawa, T

机构：

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

[2] Inst High Energy Phys, Protvino 142280, Moscow Region, Russia

[3] Univ New Mexico, Dept Phys & Astron, Albuquerque, NM 87131 USA

[4] Brookhaven Natl Lab, Upton, NY 11973 USA

[5] TRIUMF, Vancouver, BC V6T 2A3, Canada

[6] Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada

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

[8] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA

[9] Kyoto Univ, Dept Phys, Sakyo Ku, Kyoto 6068502, Japan

[10] Russian Acad Sci, Inst Nucl Res, Moscow 117312, Russia

[11] Univ Alberta, Ctr Subatom Res, Edmonton, AB T6G 2N5, Canada

[12] Univ Fukui, Dept Appl Phys, Fukui 9108507, Japan

[13] Osaka Univ, Res Ctr Nucl Phys, Osaka 5670047, Japan

[14] Osaka Univ, Nucl Studies Lab, Toyonaka, Osaka 5600043, Japan

[15] Natl Def Acad, Dept Appl Phys, Yokosuka, Kanagawa 2398686, Japan

[16] Univ Delhi, Dept Phys & Astron, Delhi 110007, India

来源：

PHYSICS LETTERS B | 2005年 / 623卷 / 3-4期

基金：

加拿大自然科学与工程研究理事会;

关键词：

kaon rare decay; chiral perturbation theory; unitarity corrections; non-commutative theories;

D O I：

10.1016/j.physletb.2005.07.057

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have searched for the K+ -> pi(+)gamma gamma decay in the kinematic region with pi(+) momentum close to the end point. No events were observed, and the 90% confidence-level upper limit on the partial branching ratio was obtained, B (K+ -> pi(+)gamma gamma, P > 213 MeV/c) < 8.3 x 10(-9) under the assumption of chiral perturbation theory including next-to-leading order "unitarity" corrections. The same data were used to determine an upper limit on the K+ -> pi(+)gamma branching ratio of 2.3 x 10(-9) at the 90% confidence level. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：192 / 199

页数：8

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Search for the decay K+→ π+γγ in the π+ momentum region P &gt; 213 MeV/c

Search for the decay K+→ π+γγ in the π+ momentum region P > 213 MeV/c