Search for the weak decay of a lightly bound H0 dibaryon

被引：28

作者：

Alavi-Harati, A

Alexopoulos, T

Arenton, M

Arisaka, K

Averitte, S

Barker, AR

Bellantoni, L

Bellavance, A

Belz, J

Ben-David, R ^{[1
]}

Bergman, DR

Blucher, E

Bock, GJ

Bown, C

Bright, S

Cheu, E

Childress, S

Coleman, R

Corcoran, MD

Corti, G

Cox, B

Crisler, MB

Erwin, AR

Ford, R

Glazov, A

Golossanov, A

Graham, G

Graham, J

Hagan, K

Halkiadakis, E

Hanagaki, K

Hidaka, S

Hsiung, YB

Jejer, V

Jensen, DA

Kessler, R

Kobrak, HGE

LaDue, J

Lath, A

Ledovskoy, A

McBride, PL

McManus, AP

Mikelsons, P

Monnier, E

Nakaya, T

Nelson, KS

Nguyen, H

O'Dell, V

Pang, M

Pordes, R

机构：

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

[2] Univ Arizona, Tucson, AZ 85721 USA

[3] Univ Calif Los Angeles, Los Angeles, CA 90095 USA

[4] Univ Calif San Diego, La Jolla, CA 92093 USA

[5] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA

[6] Univ Colorado, Boulder, CO 80309 USA

[7] Elmhurst Coll, Elmhurst, IL 60126 USA

[8] Osaka Univ, Toyonaka, Osaka 560, Japan

[9] Rice Univ, Houston, TX 77005 USA

[10] Rutgers State Univ, Piscataway, NJ 08855 USA

[11] Univ Virginia, Dept Phys, Charlottesville, VA 22901 USA

[12] Univ Virginia, Inst Nucl & Particle Phys, Charlottesville, VA 22901 USA

[13] Univ Wisconsin, Madison, WI 53706 USA

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 84卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.84.2593

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present results of a search fur a new form of hadronic matter, a six-quark, dibaryon state called the H-0, a state predicted to exist in several theoretical models. Analyzing data collected by experiment E799-II at Fermilab, we searched for the decay H-0 --> Lambda p pi(-) and found no candidate events. We place an upper limit on [B(H-0 --> Lambda p pi(-))d sigma(H)/d Omega]/(d sigma equivalent to/d Omega) and; in the context of published models, exclude the region of lightly bound mass states just below the Lambda Lambda mass threshold, 2.194 < M-H < 2.231 GeV/c(2), with lifetimes from similar to 5 X 10(-10) sec to similar to 1 X 10(-3) sec.

引用

页码：2593 / 2597

页数：5

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