Abstract
The inclusive production of photons in\(\bar pp\) interactions has been studied at incident momentum of 12 GeV/c. Topological cross section has been presented and KNO distribution for\(\bar pp\) interactions has been studied. Inclusive cross section for γ production has been measured to be 149.5±8.8 mb. Bulk of these photons come from π0 decays whose cross section has been evaluated independently to be 60.4±7.9 mb. Signals of η and ω have been seen in γγ and π+π-π0 decay modes and their inclusive cross sections have been estimated to be 14.9±8.8 mb and 14.6±7.0 mb respectively. Results on average multiplicities of γ and two particle correlation parameters are presented. Neutral pions seem to be more strongly correlated than the charged pions. The inclusive distributions of the Feynmanx andp /2 T of the photons are compared with expectation from charged pions on the basis of charge independence. Energy dependence of the normalised invariant distributions has been studied. The distribution of the scaling variablez of photons ine + e − and\(\bar pp\) interactions has been compared.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
D. Bertrand et al.: Nucl. Phys.B128, 365 (1977)
P.R.S. Wright et al.: Nucl. Phys.B189, 421 (1981); P.R.S. Wright: Blacket Laboratory HEP/T/78 (1980)
W. Galbraith et al.: Phys. Rev.B138, 913 (1965)
V. Blobel et al.: Nucl. Phys.B69, 454 (1974)
J.G. Rushbrooke, B.R. Webber: Phys. Rep.44, 1 (1978)
P. Johnson et al.: Nucl. Phys.B173, 77 (1980)
S. Banerjee et al.: Z. Phys. C — Particles and Fields,17, 203 (1983)
M.T. Regan et al.: Nucl. Phys.B141, 65 (1978)
G.D. Patel et al.: Z. Phys. C — Particles and Fields12, 189 (1982)
F.T. Dao et al.: Phys. Lett.51B, 505 (1974)
E.G. Boos et al.: Yad. Fiz.29, 374 (1979)
M.A. Jabiol et al.: Nucl. Phys.B127, 365 (1977)
C. Poiret et al.: Z. Phys. C — Particles and Fields7, 283 (1981)
J.J. Dumont et al.: Z. Phys. C — Particles and Fields13, 1 (1982)
D.R. Ward et al.: Phys. Lett.62B, 237 (1976)
K. Jaeger et al.: Phys. Rev.D11, 1756 (1975)
V. Blobel et al.: Phys. Lett.48B, 73 (1974)
V. Karimaki et al.: Z. Phys. C — Particles and Fields9, 117 (1981)
G. Backenstoss et al.: Nucl. Phys.B228, 424 (1983); G. Levman et al.: Phys. Rev.D21, 1 (1980); M. Markytan et al.: Nucl. Phys.B143, 263 (1978); E.A. Starchenko et al.: Z. Phys. C — Particles and Fields16, 181 (1983); J.L. Bailly et al.: Z. Phys. C — Particles and Fields22, 119 (1984)
L.N. Abesalashvili et al.: Phys. Lett.52B, 236 (1974)
D.E. Zissa et al.: Phys. Rev.D21, 3059 (1980)
C.P. Ward et al.: Nucl. Phys.B153, 299 (1979)
Z. Koba, H.B. Nielsen, P. Olesen: Nucl. Phys.B40, 317 (1972)
P. Slattery: Phys. Rev.D7, 2073 (1973)
J.W. Chapman et al.: Phys. Lett.47B, 465 (1973)
H. Boggild et al.: Nucl. Phys.B27, 285 (1971); M. Boratav et al.: Nucl. Phys.B111, 529 (1976); K. Jaeger et al.: Phys. Rev.D11, 2405 (1975); A. Sheng et al.: Phys. Rev.D11, 1733 (1975); A. Firestone et al.: Phys. Rev.D10, 2080 (1974); R.D. Kass et al.: Phys. Rev.D20, 605 (1979)
E. Fett et al.: Nucl. Phys.B130, 1 (1977)
H. Muirhead: Proceeding of the International Symposium on\(\bar pp\) Interactions, Loma Koli, 300 (1975)
E.G. Boos et al.: Z. Phys. C — Particles and Fields15, 287 (1982)
M. Basile et al.: Nuovo Cimento65A, 400 (1981)
D.L. Scharre et al.: Phys. Rev. Lett.41, 1005 (1978)
H.J. Behrend et al.: Z. Phys. C — Particles and Fields20, 207 (1983)
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Chakrabarti, S., Banerjee, S., Ganguli, S.N. et al. Inclusive γ-production in\(\bar pp\) 1interactions at 12 GeV/c. Z. Phys. C - Particles and Fields 27, 1–10 (1985). https://doi.org/10.1007/BF01642474
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF01642474