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Measurement of the Λ b cross section and the Λ- b to Λ b ratio with J/ψΛ decays in pp collisions at s=7 TeV

Abstract:

The Λ b differential production cross section and the cross section ratio σ(Λ-b)/σ(Λb) are measured as functions of transverse momentum pTΛb and rapidity |y Λb| in pp collisions at s=7 TeV using data collected by the CMS experiment at the LHC. The measurements are based on Λ b decays reconstructed in the exclusive final state J/ψΛ, with the subsequent decays J/ψ→μ +μ - and Λ→pπ, using a data sample corresponding to an integrated luminosity of 1.9 fb -1. The product σ(Λb)×B(Λb→J/ψΛ) versus pTΛ...

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Journal:
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume:
714
Issue:
2-5
Pages:
136-157
Publication date:
2012-08-14
DOI:
ISSN:
0370-2693
URN:
uuid:b2864774-ae55-4040-ba4f-b1f41e60f44b
Source identifiers:
348849
Local pid:
pubs:348849

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