OBSERVATION OF A SCALAR RESONANCE DECAYING TO PI+PI-PI-0-PI-0 IN (P)OVER-BAR-P ANNIHILATION AT REST

被引：63

作者：

AMSLER, C

ARMSTRONG, DS

AUGUSTIN, I

BAKER, CA

BARNETT, BM

BATTY, CJ

BEUCHERT, K

BIRIEN, P

BLUM, P

BOSSINGHAM, R

BRAUNE, K

BROSE, J

BUGG, DV

BURCHELL, M

CASE, T

COOPER, A

CROWE, KM

DEGENER, T

DIETZ, HP

VONDOMBROWSKI, S

DOSER, M

DUNNWEBER, W

ENGELHARDT, D

ENGLERT, M

FAESSLER, MA

FELIX, C

FOLGER, G

HACKMANN, R

HADDOCK, RP

HEINSIUS, FH

HESSEY, NP

HIDAS, P

ILLINGER, P

JAMNIK, D

JAVORFI, Z

KALINOWSKY, H

KAMMLE, B

KIEL, T

KISIEL, J

KLEMPT, E

KOBEL, M

KOCH, H

KOLO, C

KONIGSMANN, K

KUNZE, M

LANDUA, R

LUDEMANN, J

MATTHAY, H

MERKEL, M

MERLO, JP

机构：

[1] QUEEN MARY & WESTFIELD COLL,LONDON E1 4NS,ENGLAND

[2] UNIV CALIF LOS ANGELES,LOS ANGELES,CA 90024

[3] UNIV MAINZ,D-85748 MUNICH,GERMANY

[4] UNIV MUNICH,D-85748 MUNICH,GERMANY

[5] CTR RECH NUCL,F-67037 STRASBOURG,FRANCE

[6] UNIV CALIF BERKELEY,LBL,BERKELEY,CA 94720

[7] UNIV BOCHUM,D-44780 BOCHUM,GERMANY

[8] HUNGARIAN ACAD SCI,H-1525 BUDAPEST,HUNGARY

[9] RUTHERFORD APPLETON LAB,DIDCOT OX11 0QX,OXON,ENGLAND

[10] CERN,CH-1211 GENEVA,SWITZERLAND

[11] UNIV HAMBURG,D-22761 HAMBURG,GERMANY

[12] UNIV KARLSRUHE,D-76344 KARLSRUHE,GERMANY

来源：

PHYSICS LETTERS B | 1994年 / 322卷 / 04期

关键词：

D O I：

10.1016/0370-2693(94)91176-2

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report an analysis of ppBAR annihilation at rest in to rho+rho-pi0 leading to the final state pi+pi-3pi0. A strong signal is observed for a scalar resonance with mass 1374 +/- 38 MeV/c2 and width 375 +/- 61 MeV/c2, decaying to rho+rho-. The resonance in rho+rho- represents 2.0 +/- 0.3% of all ppBAR annihilations at rest. It is also observed to decay into two S-wave dipions (pi+pi-)(pi0pi0). Under the assumption of isospin 0, this is probably f0(1400), seen for the first time in its 4pi decay mode.

引用

页码：431 / 440

页数：10

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