Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1995-03-22
Phys.Rev.D51:4861-4866,1995
Physics
High Energy Physics
High Energy Physics - Phenomenology
14 pages, Latex file using ReVTeX. 7 figures. To Appear in Phys Rev D
Scientific paper
10.1103/PhysRevD.51.4861
We calculate the production of 2 b-quark pairs in hadron collisions. Sources of multiple pairs are multiple interactions and higher order perturbative QCD mechanisms. We subsequently investigate the competing effects of multiple b-pair production on measurements of CP-violation: i) the increase in event rate with multiple b-pair cross sections which may reach values of order 1 barn in the presence of multiple interactions and ii) the dilution of $b$ versus $\bar b$ tagging efficiency because of the presence of events with 4 $B$-mesons. The impact of multiple $B$-meson production is small unless the cross section for producing a single pair exceeds 1~mb. We show that even for larger values of the cross section the competing effects i) and ii) roughly compensate so that there is no loss in the precision with which CP-violating CKM angles can be determined.
Gonzalez-Garcia M. C.
Halzen Francis
Stelzer Tim
Vázquez Ricardo A.
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