Discovery of a strange tribaryon S0(3115) in 4He(stopped K-,p) reaction

被引：149

作者：

Suzuki, T ^{[1
]}

Bhang, H

Franklin, G

Gomikawa, K

Hayano, RS

Hayashi, T

Ishikawa, K

Ishimoto, S

Itahashi, K

Iwasaki, M

Katayama, T

Kondo, Y

Matsuda, Y

Nakamura, T

Okada, S

Outa, H

Quinn, B

Sato, M

Shindo, M

So, H

Strasser, P

Sugimoto, T

Suzuki, K

Suzuki, S

Tomono, D

Vinodkumar, AM

Widmann, E

Yamazaki, T

Yoneyama, T

机构：

[1] Univ Tokyo, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan

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

[3] Carnegie Mellon Univ, Dept Phys, Pittsburgh, PA 15213 USA

[4] Tokyo Inst Technol, Dept Phys, Meguro Ku, Tokyo 1528551, Japan

[5] IPNS, KEK High Energy Acceralator Res Org, Tsukuba, Ibaraki 3050801, Japan

[6] RIKEN, DRI, Wako, Saitama 3510198, Japan

来源：

PHYSICS LETTERS B | 2004年 / 597卷 / 3-4期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/j.physletb.2004.07.046

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have measured the proton energy distribution from the He-4(stopped K-, p) reaction by means of time-of-flight. A monoenergetic peak was observed, which is interpreted as the formation of a new kind of neutral tribaryon S-0(3115) with isospin T = 1 and strangeness S = -1. The mass and width of the state were deduced to be 3117.0(-4.4)(+0.5) MeV/c(2) and < 21 MeV/c(2), respectively. The state mainly decays into SigmaNN. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：263 / 269

页数：7

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