QUANTUM NUMBER CONSERVATION IN STATISTICAL-MODELS AND ITS APPLICATION TO P(P)OVER-BAR-ANNIHILATION AT REST

被引：8

作者：

BLUMEL, W

KOCH, P

HEINZ, U

机构：

[1] UNIV BREMEN,INST THEORET PHYS,D-28334 BREMEN,GERMANY

[2] UNIV CALIF SANTA BARBARA,INST THEORET PHYS,SANTA BARBARA,CA 93106

来源：

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS | 1994年 / 63卷 / 04期

关键词：

D O I：

10.1007/BF01557630

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We investigate the role of exact quantum number conservation in small statistical systems and illustrate the consequences for ppBAR-annihilation at rest. A group theoretical projection method is used to calculate a restricted canonical partition function which consists only of states allowed by the conservation laws. Special emphasis is put on the conservation of isospin, total angular momentum, and C-, G-, and P-parities. Our analysis of the partition function shows that it is increasingly dominated by two-particle states as more of the conservation laws are included. The constraining effects on various multiplicity ratios and the deviations from the unconstrained limit are discussed in detail.

引用

页码：637 / 650

页数：14

共 50 条

[1] DETERMINATION OF THE RELATIVE BRANCHING RATIOS FOR PPBAR-]PI+PI- AND PPBAR-]K+K- [J].

ADLER, R ;

ANGELOPOULOS, A ;

APOSTOLAKIS, A ;

ASLANIDES, E ;

BACKENSTOSS, G ;

BEE, CP ;

BENNET, J ;

BLOCH, P ;

BULA, C ;

BURGUN, C ;

CARLSON, P ;

CARVALHO, J ;

CHARDALAS, M ;

CHARALAMBOUS, S ;

COBBAERT, H ;

DEDOUSSIS, S ;

DEJARDIN, M ;

DERRE, J ;

DODGSON, M ;

DOUSSE, JC ;

DUCLOS, J ;

EALET, A ;

ECKART, B ;

FARAVEL, L ;

FASSNACHT, P ;

FAURE, JL ;

FELDER, C ;

FERREIRA-MARQUES, R ;

FETSCHER, W ;

FIDECARO, M ;

FILIPCIC, A ;

FRANCIS, D ;

FRY, JR ;

FUGLESANG, C ;

GABATHULER, E ;

GAMET, R ;

GARRETA, D ;

GERALIS, T ;

GERBER, HJ ;

GO, A ;

GUMPLINGER, P ;

GUYOT, C ;

HARRISON, PF ;

HAYMAN, PJ ;

HEYES, WG ;

HOLLANDER, RW ;

JOHNER, HU ;

JON-AND, K ;

JANSSON, K ;

KEREK, A .

PHYSICS LETTERS B, 1991, 267 (01) :154-158

[2] 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

[3] PROTON ANTI-PROTON ANNIHILATIONS AT REST INTO PI-0-OMEGA,PI-0-ETA,PI-0-GAMMA,PI-0-PI-0, AND PI-0-ETA' [J].

BACKENSTOSS, G ;

HASINOFF, M ;

PAVLOPOULOS, P ;

REPOND, J ;

TAUSCHER, L ;

TROSTER, D ;

BLUM, P ;

GUIGAS, R ;

KOCH, H ;

MEYER, M ;

POTH, H ;

RAICH, U ;

RICHTER, B ;

ADIELS, L ;

BERGSTROM, I ;

FRANSSON, K ;

KEREK, A ;

SUFFERT, M ;

ZIOUTAS, K .

NUCLEAR PHYSICS B, 1983, 228 (03) :424-438

[4] UPDATED CHARGED-PARTICLE MULTIPLICITY DISTRIBUTION FROM 205-GEV-C PROTON-PROTON INTERACTIONS [J].

BARISH, S ;

CHO, Y ;

COLLEY, DC ;

DERRICK, M ;

ENGELMANN, R ;

HYMAN, LG ;

JAEGER, K ;

MUSGRAVE, B ;

PHELAN, JJ ;

REST, J ;

SCHREINER, P ;

SCHULTZ, PF ;

SINGER, R ;

YUTA, H ;

VOYVODIC, L ;

WALKER, R ;

WHITMORE, J .

PHYSICAL REVIEW D, 1974, 9 (09) :2689-2691

[5]

BARKAS H, 1957, PHYS REV, V105, P1037

[6] STATISTICAL THEORY OF MULTIPLE MESON PRODUCTION WITH ANGULAR MOMENTUM CONSERVATION [J].

CERULUS, F .

NUOVO CIMENTO, 1961, 22 (05) :958-+

[7] CLOSED FORMULAE FOR THE STATISTICAL WEIGHTS [J].

CERULUS, F .

NUOVO CIMENTO, 1961, 19 (03) :528-536

[8] CONSEQUENCES OF A STRONG PI-PI INTERACTION IN THE STATISTICAL THEORY OF P-PBAR ANNIHILATION [J].

CERULUS, F .

NUOVO CIMENTO, 1959, 14 (04) :827-835

[9]

CERULUS F, 1960, NUOVO CIMENTO SUPPL, V15, P402

[10]

CHAUDHARY BS, 1974, S NN INTERACTIONS

← 1 2 3 4 5 →