Chinese Physics C > 1985, Vol. 9 > Issue(5): 546-554

TESTING GLUON DISTRIBUTION FUNCTION OF HADRONS IN LARGE P_TPROCESS WITH DIRECT PHOTON EMISSION

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Abstract：
In this paper we disscuse disscuse the physicsical aspect of cross-section differences Δ _AB ^cγ= dσ( AB→ cγX)- dσ( AB→ cγX) and give the simple rules to select the elementary subprocesses which contribute to cross-section differences.
We bind a way to test the gluon distribution functions of hadrons through the measurement of cross-section difference or combination of cross-section differences in the large P _Tprocess with direct photon emission. Moreover we obtain simple relations between each combination of cross-sections and the corresponding gluon distribution functions of proton, neutron, pion and daon:
G _p ⁸(x)/(Δ _pp ^hγ－Δ _pp ^hγ)=G _n ⁸(x)/(Δ _pp ^hγ)=G _π ⁸(x)/(Δ _π+p ^hγ+Δ _π－p ^hγ=G _K ⁸(x)/(Δ _K+p ^hγ+Δ _K－p ^hγ)which are expected to be test in experiment.

References

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Kwang Sup Soh et al., Phys. Rev., D18(1978), 751.[2] M. Anselmino and E. Leader, Z. Phys., C18(1983), 307.[3] M. Fontamaz, A. Mantrch, B. Pire and D. Schiff, Phys. Lett., 89B (19801, 263.[4] D. I. Sivers, R. Blankenbecher and S. J. Brodsky, Phys. Reports, 23 (1976), 1.[5] B. L. Combridge, Nucl. Phys., B174 (1980), 243.[6] R. Baier, J. Engels and B. Petesson, Z. Physik, C2 (1979), 265; J. G. H. de Groot et al., Phys. Lett., 82B ( 1979), 456.[7] J. G. McEwen et al., Prenrint CERN/EP 82--151 (1982).[8] H. Abramowicz et al., Preprint CERN/EP 82-210 (1982).

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KONG Fan-Mei, LUO Ma and LIU Hao-Ran. TESTING GLUON DISTRIBUTION FUNCTION OF HADRONS IN LARGE P _TPROCESS WITH DIRECT PHOTON EMISSION[J]. Chinese Physics C, 1985, 9(5): 546-554.

KONG Fan-Mei, LUO Ma and LIU Hao-Ran. TESTING GLUON DISTRIBUTION FUNCTION OF HADRONS IN LARGE P _TPROCESS WITH DIRECT PHOTON EMISSION[J]. Chinese Physics C, 1985, 9(5): 546-554. shu

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Received: 1900-01-01
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

TESTING GLUON DISTRIBUTION FUNCTION OF HADRONS IN LARGE P_TPROCESS WITH DIRECT PHOTON EMISSION

Corresponding author:KONG Fan-Mei,

Received Date:1900-01-01
Accepted Date:1900-01-01
Available Online:1985-10-05

Abstract:In this paper we disscuse disscuse the physicsical aspect of cross-section differences Δ_AB^cγ=dσ(AB→cγX)-dσ(AB→cγX) and give the simple rules to select the elementary subprocesses which contribute to cross-section differences.
We bind a way to test the gluon distribution functions of hadrons through the measurement of cross-section difference or combination of cross-section differences in the large P_Tprocess with direct photon emission. Moreover we obtain simple relations between each combination of cross-sections and the corresponding gluon distribution functions of proton, neutron, pion and daon:
G_p⁸(x)/(Δ_pp^hγ－Δ_pp^hγ)=G_n⁸(x)/(Δ_pp^hγ)=G_π⁸(x)/(Δ_π+p^hγ+Δ_π－p^hγ=G_K⁸(x)/(Δ_K+p^hγ+Δ_K－p^hγ)which are expected to be test in experiment.