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

页码：509 / 514

页数：6

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