REACTION PI-P-]ETA' N IN THE 15-40 GEV-C MOMENTUM RANGE

被引:78
作者
APEL, WD
AUGENSTEIN, KH
BERTOLUCCI, E
DONSKOV, SV
INYAKIN, AV
JOHNSON, R
KACHANOV, VA
KITTENBERGER, V
KRASNOKUTSKY, RN
KRUGER, M
LEDER, G
LEDNEV, AA
MANNELLI, I
MIKHAILOV, YV
MULLER, H
PROKOSHKIN, YD
PIERAZZINI, GM
QUAGLIA, M
SCHINZEL, D
SCRIBANO, A
SCHNEIDER, H
SERGIAMPIETRI, F
SHUVALOV, RS
SIGURDSSON, G
STEUER, M
VINCELLI, ML
机构
[1] KERNFORSCHUNGSZENTRUM KARLSRUHE,D-7500 KARLSRUHE,FED REP GER
[2] UNIV PISA,IST FIS,I-56100 PISA,ITALY
[3] SERPUKHOV HIGH ENERGY PHYS INST,SERPUKHOV,USSR
[4] AUSTRIAN ACAD SCI,INST HOCHENERGIEPHYS,VIENNA,AUSTRIA
[5] INFN,PISA,ITALY
关键词
D O I
10.1016/0370-2693(79)90906-7
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Measurements were made of the cross section of the reactions π-p → ν′(958)n, η′ → 2γ at momenta at 15, 20, 25, 30 and 40 GeV/c. The experiment was carried out on the IHEP 70 GeV accelerator using the 648 channel hodoscope spectrometer NICE for γ-ray detection. A total of 6000 η′ mesons were recorded. A sharp drop is seen in the differential cross section for t → 0. The dependences of the differential cross sections for the π-p → η′n and π-p → η n on t are identical. On the basis of the ratio of the cross sections for these reactions at t = 0, i.e. R( η′ n)t=0 = 0.55 ± 0.06, the singlet-octet mixing angle for pseudoscalar mesons was determined to be β = -(18.2 ± 1.4)°. © 1979.
引用
收藏
页码:131 / 135
页数:5
相关论文
共 19 条
  • [1] NEUTRAL-MESON PRODUCTION CROSS SECTIONS AND MIXING ANGLES IN A QUARK MODEL
    ALEXANDER, G
    LIPKIN, HJ
    SCHECK, F
    [J]. PHYSICAL REVIEW LETTERS, 1966, 17 (07) : 412 - +
  • [2] Anisovich V. V., 1973, Yadernaya Fizika, V18, P701
  • [3] X0-]2-GAMMA FROM PI-P-] NEUTRAL MESON+NEUTRON AT 3.8 GEV-C
    APEL, WD
    BERTOLUCCI, E
    AUSLANDER, J
    VINCELLI, ML
    STAUDENMAIER, HM
    SERGIAMPIETRI, F
    SCRIBANO, A
    SIGURDSSON, G
    MANNELLI, I
    PIERAZZINI, G
    REHAK, P
    MULLER, H
    [J]. PHYSICS LETTERS B, 1972, B 40 (06) : 680 - +
  • [4] RESULTS ON PRODUCTION CROSS-SECTIONS PI-P-] NEUTRALS AND PI-P-]CHI02GAMMA N AT 3.8,6,8 AND 12 GEV/C
    APEL, WD
    AUSLANDER, J
    MULLER, H
    SIGURDSSON, G
    STAUDENMAIER, HM
    BERTOLUCCI, E
    MANNELLI, I
    PIERAZZINI, G
    REHAK, P
    SCRIBANO, A
    SERGIAMPIETRI, F
    VINCELLI, ML
    [J]. PHYSICS LETTERS B, 1973, B 46 (03) : 459 - 464
  • [5] APEL WD, 1979, IHEP791 PREPR
  • [6] APEL WD, 1974, IHEP74118 PREPR
  • [7] BOLOTOV VN, 1972, 16TH INT C HIGH EN P
  • [8] BOLOTOV VN, 1973, IHEP7389 PREPR
  • [9] MEASUREMENT OF ETA'-SPIN PARITY
    CERRADA, M
    WAGNER, F
    CHALOUPKA, V
    HEMINGWAY, RJ
    HOLMGREN, SO
    LOSTY, MJ
    LOVERRE, PF
    MARZANO, F
    BLOKZIJL, R
    JONGEJANS, B
    MASSARO, GGG
    SCHOTANUS, DJ
    TIECKE, HG
    TIMMERMANS, JJM
    FOSTER, B
    MCDOWELL, WL
    [J]. NUCLEAR PHYSICS B, 1977, 126 (02) : 189 - 202
  • [10] EDWARDS KW, 1976, 18TH INT C HIGH EN P