EVIDENCE FOR A BOUND-STATE IN PPBAR SYSTEM

被引：1

作者：

BYKOVSKY, BV

MESHCHERYAKOV, DV

MESHCHERYAKOV, VA

机构：

[1] MV LOMONOSOV STATE UNIV, DEPT PHYS, MOSCOW 117234, USSR

[2] INT CTR THEORET PHYS, I-34100 TRIESTE, ITALY

来源：

NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA A-NUCLEI PARTICLES AND FIELDS | 1991年 / 104卷 / 09期

关键词：

D O I：

10.1007/BF02789580

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：

Two characteristics of proton-antiproton scattering rho(s) = = ReF(ppBAR)/ImF(ppBAR) and sigma-tot (s) are considered. Theoretical consideration is based on the analytical properties of the forward-scattering amplitude F(ppBAR)(s). Experimental data on rho and sigma-tot at p(L) less-than-or-equal-to 1 GeV/c have been analyzed, and a satisfactory description of rho and sigma-tot has been achieved only when a quasi-nuclear state is assumed to exist in a ppBAR system. The mass of this state is close to 2m, where m is the proton mass.

引用

页码：1381 / 1390

页数：10

共 19 条

[1]

AHMAD S, 1985, PHYS LETT B, V162, P71

[2] SEARCH FOR A NARROW RESONANCE IN ANTIPROTON PROTON ANNIHILATION CROSS-SECTIONS IN THE BEAM MOMENTUM RANGE BETWEEN 400 AND 600 MEV/C [J].

BRUCKNER, W ;

CUJEC, B ;

DOBBELING, H ;

DWORSCHAK, K ;

GUTTNER, F ;

KNEIS, H ;

MAJEWSKI, S ;

NOMACHI, M ;

PAUL, S ;

POVH, B ;

RANSOME, RD ;

SHIBATA, TA ;

TREICHEL, M ;

WALCHER, T .

PHYSICS LETTERS B, 1987, 197 (03) :463-468

[3] REAL-TO-IMAGINARY RATIO OF THE PBARP FORWARD ELASTIC-SCATTERING AMPLITUDE IN THE MOMENTUM RANGE BETWEEN 180 AND 590 MEV/C [J].

BRUCKNER, W ;

DOBBELING, H ;

GUTTNER, F ;

VONHARRACH, D ;

KNEIS, H ;

MAJEWSKI, S ;

NOMACHI, M ;

PAUL, S ;

POVH, B ;

RANSOME, RD ;

SHIBATA, TA ;

TREICHEL, M ;

WALCHER, T .

PHYSICS LETTERS B, 1985, 158 (02) :180-185

[4]

BRUCKNER W, 1986, PHYS LETT B, V166, P133

[5]

DALKAROV JD, 1986, 34 LEB PHYS IN PREPR

[6] ENERGY LEVEL DISPLACEMENTS IN PI-MESONIC ATOMS [J].

DESER, S ;

BAUMANN, K ;

THIRRING, W .

PHYSICAL REVIEW, 1954, 96 (03) :774-776

[7]

DESWART JJ, THEFNYM8805 PREPR

[8] INELASTIC I = J = 1 PI-PI SCATTERING-AMPLITUDE FROM DATA ON E+E--]PI+PI- [J].

DUBNICKA, S ;

MARTINOVIC, L .

LETTERE AL NUOVO CIMENTO, 1985, 44 (07) :462-466

[9] UNIFORMIZATION OF FORWARD-SCATTERING AMPLITUDE AT HIGH-ENERGY [J].

GERDT, VP ;

INOZEMTSEV, VI ;

MESHCHERYAKOV, VA .

LETTERE AL NUOVO CIMENTO, 1976, 15 (09) :321-328

[10] ANALYSIS OF NN AND NNBAR FORWARD SCATTERING-AMPLITUDES INCLUDING INFORMATION FROM PI-PI AND PI-N SCATTERING [J].

GREIN, W .

NUCLEAR PHYSICS B, 1977, 131 (2-3) :255-274

← 1 2 →