An Experimental Evidence for the Appearance of Semihard Processes in Hadron-Hadron Collisions at Collider Energies

Liu Hongping; Liu Feng; Wu Yuanfang; Liu Lianshou

Chinese Physics C> 1997, Vol. 21> Issue(7) : 609-614

An Experimental Evidence for the Appearance of Semihard Processes in Hadron-Hadron Collisions at Collider Energies

Institute of Particle Physics,Huazhong Normal University,Wuhan 430070

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Abstract：
After carefully analysing the scatter plot of pt vs.N of hadron-hadron collisions at s=540GeV,we point out that the appearence of large average transverse momentum per event pt and large multiplicity N is a new experimental evidence of existing hard component at the collision.The Monte Carlo simulation for one(soft) and two(both hard and soft) component model demonstrates qualitatively correct ness of this arguement.

References

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M.Banner et al.（UA2）,Phys.Lett.118B（1982）203;G.Amison et al.（UA1）,Phys.Lett.123B（1983）115.[2]G.Ciapetti（UA1）,in Proceedings of the Fifth Topical Workshop on Proton-Antiproton Collider Physics,St.Vincent Aosta Valley,Italy,1985,edited by M.Greco（WorldScientific,Singapore,1985（p.488.[3]Chao Wei-qin,Meng Ta-chung,Pan Ji-cai,Phys,Rev,Lett.58（1987）1399.[4]X.N.Wang,R.C.Hwa,Phys.Rev.D39（1989）187.[5]Wu Yuanfang,Liu Lianshou,Phys.Lett.269B（1991）28.[6]Y.F.Wu et al.(UA1) .Acta Phys.Slov,44（1994）141.[7]Liu Feng,Wu Yuanfang,Liu Lianshou,Chinese J.of Nucl.Phys,15（1993）7.[8]UA5 Collaboration,Phys,Lett,160B（1985）199.

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Liu Hongping, Liu Feng, Wu Yuanfang and Liu Lianshou. An Experimental Evidence for the Appearance of Semihard Processes in Hadron-Hadron Collisions at Collider Energies[J]. Chinese Physics C, 1997, 21(7): 609-614.

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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

An Experimental Evidence for the Appearance of Semihard Processes in Hadron-Hadron Collisions at Collider Energies

Corresponding author: Liu Hongping,

Institute of Particle Physics,Huazhong Normal University,Wuhan 430070

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1997-07-05

Abstract: After carefully analysing the scatter plot of pt vs.N of hadron-hadron collisions at s=540GeV,we point out that the appearence of large average transverse momentum per event pt and large multiplicity N is a new experimental evidence of existing hard component at the collision.The Monte Carlo simulation for one(soft) and two(both hard and soft) component model demonstrates qualitatively correct ness of this arguement.