Measurement of the Cross Section for Open-Beauty Production in Photon-Photon Collisions at LEP

Abstract

The cross section for open-beauty production in photon-photon collisions is measured using the whole high-energy and high-luminosity data sample collected by the L3 detector at LEP. This corresponds to 627/pb of integrated luminosity for electron-positron centre-of-mass energies from 189GeV to 209GeV. Events containing b quarks are identified through their semi-leptonic decay into electrons or muons. The e+e- -> e+e-b b~X cross section is measured within our fiducial volume and then extrapolated to the full phase space. These results are found to be in significant excess with respect to Monte Carlo predictions and next-to-leading order QCD calculations.

References in corpus (20)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Hadronic final state predictions from CCFM: the hadron-level Monte Carlo generator CASCADE
• QCD analysis of first b cross section data at 1.96 TeV
• Parton Distributions of the Virtual Photon
• Low- and high-mass components of the photon distribution functions
• Measurement of the $B$ Meson Differential Cross Section, $d\sigma /d{p}_T$, in $p\bar{p}$ Collisions at $\sqrt{s}=1.8$ TeV
• The b-bbar Production Cross Section and Angular Correlations in p-pbar Collisions at sqrt(s) = 1.8 TeV
• The CCFM Monte Carlo generator CASCADE
• Measurement of Open Beauty Production at HERA
• Measurement of the $B^{+}$ Total Cross Section and $B^{+}$ Differential Cross Section $d\sigma /d{p}_T$ in $p\bar{p}$ Collisions at $\sqrt{s}=1.8$ TeV
• Cross Section for b Jet Production in pbar-p Collisions at sqrt(s) = 1.8 TeV
• Measurement of open beauty production in photoproduction at HERA
• Measurements of the Cross Sections for Open Charm and Beauty Production in gamma gamma Collisions at root(s)=189-202 GeV
• Measurement of beauty production in deep inelastic scattering at HERA
• Large-$p_{\perp }$ Heavy-Quark Production in Two-Photon Collisions
• Heavy Quark production at the TEVATRON and HERA using k_t-factorization with CCFM evolution
• Determination of alphaS from Hadronic Event Shapes in e+e- Annihilation at 192 < sqrt(s) < 208 GeV
• Beauty photoproduction measured using decays into muons in dijet events in ep collisions at $\sqrt{s}$=318 GeV
• Measurement of the Ratio of b Quark Production Cross Sections in Antiproton-Proton Collisions at 630 GeV and 1800 GeV
• Measurement of the Charm Production Cross Section in gamma gamma Collisions at LEP

Cited by in corpus (9)

• Measurement of beauty production in DIS and F_2^bbbar extraction at ZEUS
• Measurement of open beauty production at HERA in the D* muon final state
• Measurement of beauty production from dimuon events at HERA
• Measurement of beauty photoproduction using decays into muons in dijet events at HERA
• Beauty photoproduction at HERA: kt-factorization versus experimental data
• Deep inelastic beauty production at HERA in the kt-factorization approach
• Measurement of the Cross Section for open b-Quark Production in Two-Photon Interactions at LEP
• The implications of final L3 measurement of $σ_{tot}(γγ\to b\bar{b}
• Hadronic photon-photon scattering at LEP