SIGMA-TERM UPDATE

被引:742
作者
GASSER, J [1 ]
LEUTWYLER, H [1 ]
SAINIO, ME [1 ]
机构
[1] UNIV HELSINKI,THEORET PHYS RES INST,SF-00170 HELSINKI 17,FINLAND
关键词
D O I
10.1016/0370-2693(91)91393-A
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The determination of the sigma-term from pi-NU scattering is critically examined. The currently available data indicate sigma-congruent-to 45 MeV. Low-energy precision measurements are needed to clarify discrepancies in experimental data and to reduce the uncertainty in the strangeness content for which we obtain y congruent-to 0.2.
引用
收藏
页码:252 / 259
页数:8
相关论文
共 72 条
  • [1] PI+-P ELASTIC-SCATTERING AT 47.9 MEV
    AULD, EG
    AXEN, D
    BEVERIDGE, J
    DUESDIEKER, C
    FELAWKA, L
    INGRAM, CHQ
    JOHNSON, RR
    JONES, G
    LEPATOUREL, D
    ORTH, R
    SALOMON, M
    WESTLUND, W
    ROBERTSON, LP
    [J]. CANADIAN JOURNAL OF PHYSICS, 1979, 57 (01) : 73 - 78
  • [2] REACTION PI-P-]PI-0N BELOW THE DELTA-RESONANCE
    BAGHERI, A
    ANIOL, KA
    ENTEZAMI, F
    HASINOFF, MD
    MEASDAY, DF
    POUTISSOU, JM
    SALOMON, M
    ROBERTSON, BC
    [J]. PHYSICAL REVIEW C, 1988, 38 (02): : 885 - 894
  • [3] BEER W, 1990, B SPG SSP, V7, P44
  • [4] FLAVOR MIXING VIA DYNAMIC CHIRAL SYMMETRY-BREAKING
    BERNARD, V
    JAFFE, RL
    MEISSNER, UG
    [J]. PHYSICS LETTERS B, 1987, 198 (01) : 92 - 98
  • [5] STRANGENESS MIXING AND QUENCHING IN THE NAMBU-JONA-LASINIO MODEL
    BERNARD, V
    JAFFE, RL
    MEISSNER, UG
    [J]. NUCLEAR PHYSICS B, 1988, 308 (04) : 753 - 790
  • [6] PI+P SCATTERING BELOW 100 MEV
    BERTIN, PY
    COUPAT, B
    HIVERNAT, A
    ISABELLE, DB
    DUCLOS, J
    GERARD, A
    MILLER, J
    MORGENSTERN, J
    PICARD, J
    VERNIN, P
    POWERS, R
    [J]. NUCLEAR PHYSICS B, 1976, 106 (02) : 341 - 354
  • [7] LARGE-ANGLE PI+P ELASTIC-SCATTERING AT 66.8 MEV
    BRACK, JT
    KRAUSHAAR, JJ
    RILETT, DJ
    RISTINEN, RA
    OTTEWELL, DF
    SMITH, GR
    JEPPESEN, RG
    STEVENSON, NR
    [J]. PHYSICAL REVIEW C, 1988, 38 (05): : 2427 - 2429
  • [8] PI-P ELASTIC-SCATTERING FROM 67 TO 139 MEV
    BRACK, JT
    KRAUSHAAR, JJ
    MITCHELL, JH
    PETERSON, RJ
    RISTINEN, RA
    ULLMANN, JL
    GILL, DR
    JOHNSON, RR
    OTTEWELL, D
    ROZON, FM
    SEVIOR, ME
    SMITH, GR
    TERVISIDIS, F
    TRELLE, RP
    MATHIE, EL
    [J]. PHYSICAL REVIEW C, 1986, 34 (05): : 1771 - 1778
  • [9] ADLER-WEISBERGER THEOREM REEXAMINED
    BROWN, LS
    PARDEE, WJ
    PECCEI, RD
    [J]. PHYSICAL REVIEW D, 1971, 4 (09): : 2801 - &
  • [10] BUGG DV, 1990, JUN PANIC CAMBR, V12