We report evidence for beauty particle production through the observation of dimuon events from proton-antiproton collisions at energies of s=546 GeV and s=630 GeV at the CERN collider. Our data indicate that semi-leptonic decays of beauty particles are the dominant source of pairs of high-pT muons. The beauty flavour creation (gg or qq→bb) cross-section needed to explain the dimuon rate is σ{pp→bb+X; pb T>5 GeV/c, |η|<2.0}=(1.1±0.1±0.4) μb, which is in good agreement with QCD calculations. We also observe clear signals for γ→μ+μ- (hidden beauty) and high-pTJ/Ψ→μ+μ-, well above the backgraound of continuum muon pairs from the Drell-Yan mechanism. © 1987.

BEAUTY PRODUCTION AT THE CERN PROTON-ANTIPROTON COLLIDER / C., A., M. G., A., O. C., A., G., A., A., A., B., A., T., A., C., B., T., B., N., B., J. R., B., G., B., S., B., J., B., A., B., A., B., K., B., E., B., G., B., G., B., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 186:2(1987), pp. 237-246. [10.1016/0370-2693(87)90287-5]

BEAUTY PRODUCTION AT THE CERN PROTON-ANTIPROTON COLLIDER

LACAVA, Francesco;
1987

Abstract

We report evidence for beauty particle production through the observation of dimuon events from proton-antiproton collisions at energies of s=546 GeV and s=630 GeV at the CERN collider. Our data indicate that semi-leptonic decays of beauty particles are the dominant source of pairs of high-pT muons. The beauty flavour creation (gg or qq→bb) cross-section needed to explain the dimuon rate is σ{pp→bb+X; pb T>5 GeV/c, |η|<2.0}=(1.1±0.1±0.4) μb, which is in good agreement with QCD calculations. We also observe clear signals for γ→μ+μ- (hidden beauty) and high-pTJ/Ψ→μ+μ-, well above the backgraound of continuum muon pairs from the Drell-Yan mechanism. © 1987.
1987
01 Pubblicazione su rivista::01a Articolo in rivista
BEAUTY PRODUCTION AT THE CERN PROTON-ANTIPROTON COLLIDER / C., A., M. G., A., O. C., A., G., A., A., A., B., A., T., A., C., B., T., B., N., B., J. R., B., G., B., S., B., J., B., A., B., A., B., K., B., E., B., G., B., G., B., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 186:2(1987), pp. 237-246. [10.1016/0370-2693(87)90287-5]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/486238
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