OBSERVATION OF A NARROW SCALAR MESON AT 1450 MEV IN THE REACTION PP-]PF(PI+PI-PI+PI-)P(S) AT 450 GEV/C USING THE CERN OMEGA-SPECTROMETER

被引：69
作者：
ABATZIS, S
ANTINORI, F
BARBERIS, D
BARNES, RP
BAYES, A
BEUSCH, W
CARNEY, JN
CLEWER, S
DAVIES, JP
DIBARI, D
DODENHOFF, CJ
EVANS, D
FINI, R
FRENCH, BR
GHIDINI, B
GIRONE, M
JACHOLKOWSKI, A
KINSON, JB
KIRK, A
KULCHITSKY, Y
LENTI, V
LOCONSOLE, RA
MALJUKOV, S
MANZARI, V
MINASHVILI, I
NAVACH, F
NORMAN, K
QUERCIGH, E
ROMANOVSKY, V
RUSSAKOVICH, N
SEMENOV, A
SENE, M
SENE, R
SOLOVJEV, A
TCHLATCHIDZE, G
VASSILIADIS, G
VICHOU, I
BAILLIE, OV
VOTRUBA, MF
机构：
[1] UNIV BARI,DIPARTIMENTO FIS,I-70124 BARI,ITALY
[2] UNIV BIRMINGHAM,DEPT PHYS,BIRMINGHAM B15 2TT,W MIDLANDS,ENGLAND
[3] INFN,BARI,ITALY
[4] CERN,EUROPEAN ORG NUCL RES,CH-1211 GENEVA 23,SWITZERLAND
[5] JINR,DUBNA,RUSSIA
来源：
PHYSICS LETTERS B | 1994年 / 324卷 / 3-4期
关键词：
D O I：
10.1016/0370-2693(94)90231-3
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The reaction pp --> pf (pi+ pi- pi+ pi-)ps has been studied at 450 GeV/c in an experiment designed to search for gluonic states. In addition to the well known f1(1285), the pi+ pi- pi+ pi- mass spectrum shows evidence for two states previously only observed by the WA76 experiment, the X(1450) and X(1900). An analysis of the X(1450) shows that it is a relatively narrow state (GAMMA = 56 +/- 12 MeV) with I(J(PC)) = 0(0++) which decays to rho0pi+ pi-. The X(1900) could either be a single broad state (GAMMA = 370 +/- 70 MeV) with I(J(PC)) = 0(2++) or possibly two separate states.
引用
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页码：509 / 514
页数：6
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