Production of ΛΛ4H hypernuclei -: art. no. 132504

被引：106

作者：

Ahn, JK ^{[1
]}

Ajimura, S

Akikawa, H

Bassalleck, B

Berdoz, A

Carman, D

Chrien, RE

Davis, CA

Eugenio, P

Fischer, H

Franklin, GB

Franz, J

Fukuda, T

Gan, L

Hotchi, H

Ichikawa, A

Imai, K

Kahana, SH

Khaustov, P

Kishimoto, T

Koran, P

Kohri, H

Kourepin, A

Kubota, K

Landry, M

May, M

Meyer, C

Meziani, Z

Minami, S

Miyachi, T

Nagae, T

Nakano, J

Outa, H

Paschke, K

Pile, P

Prokhabatilov, M

Quinn, BP

Rasin, V

Rusek, A

Schmitt, H

Schumacher, RA

Sekimoto, M

Shileev, K

Shimizu, Y

Sutter, R

Tamagawa, T

Tang, L

Tanida, K

Yamamoto, K

Yuan, L

机构：

[1] Pusan Natl Univ, Dept Phys, Pusan 609735, South Korea

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

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

[4] Univ Freiburg, Dept Phys, D-79104 Freiburg, Germany

[5] Hampton Univ, Dept Phys, Hampton, VA 23668 USA

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

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

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

[9] Univ Manitoba, Dept Phys & Astron, Winnipeg, MB R3T 2N2, Canada

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

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

[12] Temple Univ, Dept Phys, Philadelphia, PA 19122 USA

[13] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan

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

[15] Osaka Electrocommun Univ, Phys Lab, Osaka 5728530, Japan

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 87卷 / 13期

关键词：

D O I：

10.1103/PhysRevLett.87.132504

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

An experiment demonstrating the production of double- Lambda hypernuclei in (K-, K+) reactions on Be-9 was carried out at the D6 line in the BNL alternating-gradient synchrotron. The technique was the observation of pions produced in sequential mesonic weak decay, each pion associated with one unit of strangeness change. The results indicate the production of a significant number of the double hypernucleus H-4(Lambda Lambda) and the twin hypernuclei H-4(Lambda) and H-3(Lambda). The relevant decay chains are discussed and a simple model of the production mechanism is presented. An implication of this experiment is that the existence of an S = -2 dibaryon more than a few MeV below the Lambda Lambda mass is unlikely.

引用

页码：132504 / 1

页数：5

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