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Ma, JP; Si, ZG; Ma, JP , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
Factorization approach for inclusive production of doubly heavy baryon
Source PublicationPHYSICS LETTERS B
KeywordEffective Field-theory Quark Fragmentation Gluon Fragmentation P-3(j) Quarkonium Mesons Qcd
AbstractWe study inclusive production of doubly heavy baryon at a e(+)e(-) collider and at hadron colliders through fragmentation. We study the production by factorizing nonpertubative and perturbative effects. In our approach the production can be thought as a two-step process: a pair of heavy quarks can be produced perturbatively and then the pair is transformed into the baryon. The transformation is nonperturbative. Since a heavy quark moves with a small velocity in the baryon in its rest frame, we can use NRQCD to describe the transformation and perform a systematic expansion in the small velocity. At the leading order we find that the baryon can be formed from two states of the heavy-quark pair, one state is with the pair in S-3(1) state and in color 3, another is with the pair in S-1(0) state and in color 6. Two matrix elements are defined for the transformation from the two states, their perturbative coefficients in the contribution to the cross section at a e+e- collider and to the function of heavy quark fragmentation are calculated. Our approach is different than previous approaches where only the pair in S-3(1) state and in color is taken into account. Numerical results for e(+)e(-) colliders at the two B-factories and for hadronic colliders LHC and Tevatron are given. (C) 2003 Published by Elsevier B.V.
2003
ISSN0370-2693
Volume568Issue:40910Pages:135-145
Subject AreaPhysics
Indexed BySCI
Citation statistics
Cited Times:41[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/13238
Collection理论物理所科研产出_SCI论文
Corresponding AuthorMa, JP , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
Recommended Citation
GB/T 7714
Ma, JP,Si, ZG,Ma, JP , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.. Factorization approach for inclusive production of doubly heavy baryon[J]. PHYSICS LETTERS B,2003,568(40910):135-145.
APA Ma, JP,Si, ZG,&Ma, JP , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China..(2003).Factorization approach for inclusive production of doubly heavy baryon.PHYSICS LETTERS B,568(40910),135-145.
MLA Ma, JP,et al."Factorization approach for inclusive production of doubly heavy baryon".PHYSICS LETTERS B 568.40910(2003):135-145.
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