Search for the pentaquark via the P0(c)over-bars→K*0K-p decay

被引：32

作者：

Aitala, EM ^{[1
]}

Amato, S

Anjos, JC

Appel, JA

Ashery, D

Banerjee, S

Bediaga, I

Blaylock, G

Bracker, SB

Burchat, PR

Burnstein, RA

Carter, T

Carvalho, HS

Copty, NK

Cremaldi, LM

Darling, C

Denisenko, K

Fernandez, A

Fox, GF

Gagnon, P

Gerzon, S

Gobel, C

Gounder, K

Halling, AM

Herrera, G

Hurvits, G

James, C

Kasper, PA

Kwan, S

Langs, DC

Leslie, J

Lichtenstadt, J

Lundberg, B

MayTal-Beck, S

Meadows, BT

Neto, JRTD

Mihalcea, D

Milburn, RH

de Miranda, JM

Napier, A

Nguyen, A

d'Oliveira, AB

O'Shaughnessy, K

Peng, KC

Perera, LP

Purohit, MV

Quinn, B

Radeztsky, S

Rafatian, A

Reay, NW

机构：

[1] Univ Mississippi, University, MS 38677 USA

[2] Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil

[3] Univ Calif Santa Cruz, Santa Cruz, CA 95064 USA

[4] Univ Cincinnati, Cincinnati, OH 45221 USA

[5] CINVESTAV, Mexico City 07000, DF, Mexico

[6] Fermi Natl Accelerator Lab, Batavia, IL 60510 USA

[7] IIT, Chicago, IL 60616 USA

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

[9] Univ Massachusetts, Amherst, MA 01003 USA

[10] Princeton Univ, Princeton, NJ 08544 USA

[11] Univ Autonoma Puebla, Puebla 72570, Mexico

[12] Univ S Carolina, Columbia, SC 29208 USA

[13] Stanford Univ, Stanford, CA 94305 USA

[14] Tel Aviv Univ, IL-69978 Tel Aviv, Israel

[15] Tufts Univ, Medford, MA 02155 USA

[16] Univ Wisconsin, Madison, WI 53706 USA

[17] Yale Univ, New Haven, CT 06511 USA

来源：

PHYSICS LETTERS B | 1999年 / 448卷 / 3-4期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/S0370-2693(99)00058-1

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have searched for evidence of the production and decay of a neutral bound-state pentaquark, one of a predicted doublet of states: P-(c over bar s)(0) = \(c) over bar suud] and P-(c over bar s)(-) = \(c) over bar sddu]. Specifically, we have searched for the decay P-(c over bar s)(0) --> K *K-0(-) p in data from Fermilab experiment E791, in which a 500 GeV/c pi(-) beam interacted with nuclear targets. We find mass-dependent upper limits at the 90% confidence level for the ratio of cross section times branching fraction of this decay relative to that for the decay D-s(-) --> K *K-0(-). The upper limits vary between 0.016 and 0.036 for M(P-(c over bar s)(0)) between 2.75 and 2.91 GeV/c(2), assuming a pentaquark lifetime of 0.4 ps. (C) 1999 Published by Elsevier Science B.V. All rights reserved.

引用

页码：303 / 310

页数：8

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