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

共 29 条

[1] OBSERVATION OF A 2++ RESONANCE AT 1515 MEV IN PROTON - ANTIPROTON ANNIHILATIONS INTO 3-PI-0 [J].

AKER, E .

PHYSICS LETTERS B, 1991, 260 (1-2) :249-258

[2]

ALBRECHT H, 1991, Z PHYS C PART FIELDS, V50, P1, DOI 10.1007/BF01558550

[3] A SPIN-PARITY ANALYSIS OF GAMMA-GAMMA-]RHO+RHO- [J].

ALBRECHT, H .

PHYSICS LETTERS B, 1991, 267 (04) :535-540

[4] LOW-ENERGY ANTIPROTON PHYSICS [J].

AMSLER, C ;

MYHRER, F .

ANNUAL REVIEW OF NUCLEAR AND PARTICLE SCIENCE, 1991, 41 :219-267

[5]

AMSLER C, 1993, Z PHYS C PART FIELDS, V58, P175, DOI 10.1007/BF01560336

[6] SIMULATION OF ANGULAR-DISTRIBUTIONS AND CORRELATIONS IN THE DECAY OF PARTICLES WITH SPIN [J].

AMSLER, C ;

BIZOT, JC .

COMPUTER PHYSICS COMMUNICATIONS, 1983, 30 (01) :21-30

[7] PROTON-ANTIPROTON ANNIHILATION INTO ETA-ETA-PI-OBSERVATION OF A SCALAR RESONANCE DECAYING INTO ETA-ETA [J].

AMSLER, C ;

AUGUSTIN, I ;

BAKER, CA ;

BARNETT, BM ;

BATTY, CJ ;

BECKMANN, R ;

BEUCHERT, K ;

BIRIEN, P ;

BISTIRLICH, J ;

BLUM, P ;

BOSSINGHAM, R ;

BOSSY, H ;

BRAUNE, K ;

BUGG, DV ;

BURCHELL, M ;

CASE, T ;

COOPER, A ;

CROWE, KM ;

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 ;

KLEMPT, E ;

KOCH, H ;

KONIGSMANN, K ;

KOLO, C ;

KUNZE, M ;

LANDUA, R ;

LUDEMANN, J ;

MATTHAEY, H ;

MERKEL, M ;

MERLO, JP ;

MEYER, CA ;

MEYERBERKHOUT, U .

PHYSICS LETTERS B, 1992, 291 (03) :347-354

[8] ANTIPROTON-PROTON ANNIHILATION AT REST INTO OMEGA-PI-0-PI-0 [J].

AMSLER, C ;

ARMSTRONG, D ;

AUGUSTIN, I ;

BAKER, CA ;

BARNETT, BM ;

BATTY, CJ ;

BEUCHERT, K ;

BIRIEN, P ;

BISTIRLICH, J ;

BLUM, P ;

BOSSINGHAM, R ;

BOSSY, H ;

BRAUNE, K ;

BROSE, J ;

BUGG, DV ;

BURCHELL, M ;

CASE, T ;

CHUNG, SU ;

COOPER, A ;

CROWE, KM ;

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 ;

MATTHAEY, H .

PHYSICS LETTERS B, 1993, 311 (1-4) :362-370

[9] ANNIHILATIONS OF ANTIPROTONS AT REST IN HYDROGEN .V. MULTIPION ANNIHILATIONS [J].

BALTAY, C ;

FRANZINI, P ;

LUTJENS, G ;

SEVERIENS, JC ;

TYCKO, D ;

ZANELLO, D .

PHYSICAL REVIEW, 1966, 145 (04) :1103-+

[10] EVIDENCE FOR A STRONG POSSIBLY RESONANT SCALAR RHORHO INTERACTION [J].

BETTINI, A ;

CRESTI, M ;

LIMENTANI, S ;

LORIA, A ;

PERUZZO, L ;

SANTANGELO, R ;

BERTANZA, L ;

BIGI, A ;

CARRARA, R ;

CASALI, R ;

HART, E ;

LARICCIA, P .

NUOVO CIMENTO A, 1966, 42 (03) :695-+

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