Bottom production cross section from double muonic decays of b-hadrons in 920 GeV proton-nucleus collision

Abstract

The b-bbar production cross section in 920 GeV proton-nucleus fixed target collisions is measured by observing double muonic decays of b-flavored hadrons in the kinematic region $-0.3<\xF(μ)<0.15$. A total number of $76\pm 12$ b-bbar events is obtained with a likelihood fit of the signal and background simulated events to the data. The resulting cross section is $\sigbb = 16.2 \pm 2.5_{stat} \pm 2.8_{sys} \nbpn$, or, when combined with a previous Hera-B measurement of similar precision, $\sigbb = 15.4 \pm 1.7_{stat} \pm 1.2_{sys}^{uncorr.} \pm 1.9_{sys}^{corr.} \nbpn$, which is consistent with recent NLO calculations.

10 pages, 5 figures

References in corpus (18)

• The Cosmological Parameters 2006
• Big-Bang nucleosynthesis (Particle Data Group mini-review)
• NLL resummation of the heavy-quark hadroproduction cross-section
• NNLO global parton analysis
• Measurement of Differences Between J/Psi and Psi' Suppression in p-A Collisions
• Heavy Flavour Hadro-Production from Fixed-Target to Collider Energies
• Sudakov Resummation and Finite Order Expansions of Heavy Quark Hadroproduction Cross Sections
• Analysis of charmonium production at fixed-target experiments in the NRQCD approach
• Studies of aging and HV break down problems during development and operation of MSGC and GEM detectors for the Inner Tracking System of HERA-B
• The HERA-B Ring Imaging Cherenkov Counter
• The Outer Tracker Detector of the HERA-B Experiment Part I: Detector
• J/Psi Polarization in 800-GeV p-Cu Interactions
• Measurement of Anti-Deuteron Photoproduction and a Search for Heavy Stable Charged Particles at HERA
• Threshold corrections in bottom and charm quark hadroproduction at next-to-next-to-leading order
• Production of J/psi Mesons in p Be Collisions at 530 and 800 GeV/c
• Improved Measurement of the b-bbar Production Cross Section in 920 GeV Fixed-Target Proton-Nucleus Collisions
• The Outer Tracker Detector of the HERA-B Experiment. Part II: Front-End Electronics
• Measurement of the Upsilon Production Cross Section in 920 GeV Fixed-Target Proton-Nucleus Collisions

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• Heavy-Flavor Production at Accelerators
• A database for quarkonium and open heavy-flavour production in hadronic collisions with HepData