MEASUREMENT OF THE NEAR-THRESHOLD H(PI+,PI+PI+)N CROSS-SECTION AND CHIRAL SYMMETRY

被引：40

作者：

SEVIOR, ME

AMBARDAR, A

BRACK, JT

CAMERINI, P

DUNCAN, F

ERNST, J

FELTHAM, A

GRION, N

JOHNSON, RR

KOCH, G

MEIRAV, O

OTTEWELL, DF

RUI, R

SMITH, GR

SOSSI, V

THEIS, D

VETTERLI, D

机构：

[1] TRIUMF,VANCOUVER V6T 2A6,BC,CANADA

[2] IST NAZL FIS NUCL,I-34127 TRIESTE,ITALY

[3] UNIV TRIESTE,DIPARTMENTO FIS,I-34127 TRIESTE,ITALY

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 66卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.66.2569

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Total cross sections for the H(pi+, pi+ pi+)n reaction have been measured at pion kinetic energies of 180, 184, 190, and 200 MeV. The threshold value for the matrix element alpha(pi+ pi+) and the s-wave, isospin-2, pi-pi-scattering length alpha-2(0) were determined. The results were found to be in agreement with chiral perturbation theory and inconsistent with the model of dominance by quark loop anomalies.

引用

页码：2569 / 2572

页数：4

共 18 条

[1] MEASUREMENT OF PI-PI-]PI-PI+ N NEAR THRESHOLD AND CHIRAL-SYMMETRY BREAKING [J].

BJORK, CW ;

JONES, SE ;

KING, TR ;

MANLEY, DM ;

REBKA, GA ;

WALTER, JB ;

CARAWON, R ;

GRAM, PAM ;

SHIVELY, FT ;

BORDNER, CA ;

LOMON, EL ;

OYER, AT .

PHYSICAL REVIEW LETTERS, 1980, 44 (02) :62-65

[2]

DONOGHUE J, 1990, IN PRESS P INT SCH L

[3] ON THE LOW-ENERGY STRUCTURE OF QCD [J].

GASSER, J ;

LEUTWYLER, H .

PHYSICS LETTERS B, 1983, 125 (04) :321-324

[4] QUARK MASSES [J].

GASSER, J ;

LEUTWYLER, H .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1982, 87 (03) :77-169

[5] LOW-ENERGY THEOREMS AS PRECISION TESTS OF QCD [J].

GASSER, J ;

LEUTWYLER, H .

PHYSICS LETTERS B, 1983, 125 (04) :325-329

[6]

GASSER J, COMMUNICATION

[7]

IVANOV AN, 1986, SOV J NUCL PHYS+, V43, P260

[8]

KERNEL G, 1990, Z PHYS C PART FIELDS, V48, P201, DOI 10.1007/BF01554466

[9] MEASUREMENT OF PI-P-]PI-P-PI0 REACTION NEAR THRESHOLD AND BREAKING OF CHIRAL SYMMETRY [J].

KERNEL, G ;

KORBAR, D ;

KRIZAN, P ;

MIKUZ, M ;

SEVER, F ;

STANOVNIK, A ;

STARIC, M ;

ZAVRTANIK, D ;

VANEIJK, CWE ;

HOLLANDER, RW ;

LOURENS, W ;

MICHAELIS, EG ;

TANNER, NW ;

CLARK, SA ;

JOVANOVICH, JV ;

DAVIES, JD ;

LOWE, J ;

PLAYFER, SM .

PHYSICS LETTERS B, 1989, 225 (1-2) :198-202

[10] MEASUREMENT OF PI-N-]PI-PI-P CROSS-SECTION NEAR THRESHOLD [J].

KRAVTSOV, AV ;

LOBACHEV, EA ;

MAKAROV, MM ;

MEDVEDEV, VI ;

NELYUBIN, VV ;

OBRANT, GZ ;

POROMOV, VI ;

SARANTSEV, VV ;

SHERMAN, SG ;

SIRIN, VM ;

SOKOLOV, GL ;

TKACH, LN .

NUCLEAR PHYSICS B, 1978, 134 (03) :413-422

← 1 2 →