Inclusive [chi][sub [ital c]] and [ital b]-quark production in [ital [bar p]p] collisions at [radical][ital s] =1. 8 TeV

We report the full reconstruction of [chi][sub [ital c]] mesons through the decay chain [chi][sub [ital c]][r arrow][ital J]/[psi] [gamma], [ital J]/[psi][r arrow][mu][sup +][mu][sup [minus]], using data obtained at the Collider Detector at Fermilab in 2.6[plus minus]0.2 pb[sup [minus]1] of [ital [b...

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Veröffentlicht in:	Physical review letters 1993-10, Vol.71:16
Hauptverfasser:	Abe, F., Albrow, M., Amidei, D., Anway-Wiese, C., Apollinari, G., Atac, M., Auchincloss, P., Azzi, P., Bacchetta, N., Baden, A.R., Badgett, W., Bailey, M.W., Bamberger, A., de Barbaro, P., Barbaro-Galtieri, A., Barnes, V.E., Barnett, B.A., Bauer, G., Baumann, T., Bedeschi, F., Behrends, S., Belforte, S., Bellettini, G., Bellinger, J., Benjamin, D., Benlloch, J., Bensinger, J., Beretvas, A., Berge, J.P., Bertolucci, S., Biery, K., Bhadra, S., Binkley, M., Bisello, D., Blair, R., Blocker, C., Bodek, A., Bolognesi, V., Booth, A.W., Boswell, C., Brandenburg, G., Brown, D., Buckley-Geer, E., Budd, H.S., Busetto, G., Byon-Wagner, A., Byrum, K.L., Campagnari, C., Campbell, M., Caner, A., Carey, R., Carithers, W., Carlsmith, D., Carroll, J.T., Cashmore, R., Castro, A., Cen, Y., Cervelli, F., Chadwick, K., Chapman, J., Chiarelli, G., Chinowsky, W., Cihangir, S., Clark, A.G., Cobal, M., Connor, D., Contreras, M., Cooper, J., Cordelli, M., Crane, D., Cunningham, J.D., Day, C., DeJongh, F., Dell'A
Format:	Artikel
Sprache:	eng
Schlagworte:	662420 > Properties of Mesons & Meson Resonances-- (1992-) 662440 > Properties of Other Particles Including Hypothetical Particles-- (1992-) BARYON-BARYON INTERACTIONS BARYONS BEAUTY PARTICLES BOSONS CROSS SECTIONS DECAY ELEMENTARY PARTICLES FERMILAB COLLIDER DETECTOR FERMIONS HADRON-HADRON INTERACTIONS HADRONS HYPERONS INCLUSIVE INTERACTIONS INTERACTIONS MESONS NUCLEON-ANTINUCLEON INTERACTIONS PARTICLE DECAY PARTICLE INTERACTIONS PARTICLE PRODUCTION PHYSICS OF ELEMENTARY PARTICLES AND FIELDS PROTON-ANTIPROTON INTERACTIONS RADIATIVE DECAY STRANGE PARTICLES XI BARYONS XI NEUTRAL PARTICLES XI PARTICLES 662340 > Hadron Interactions-- (1992-)
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Zusammenfassung:	We report the full reconstruction of [chi][sub [ital c]] mesons through the decay chain [chi][sub [ital c]][r arrow][ital J]/[psi] [gamma], [ital J]/[psi][r arrow][mu][sup +][mu][sup [minus]], using data obtained at the Collider Detector at Fermilab in 2.6[plus minus]0.2 pb[sup [minus]1] of [ital [bar p]p] collisions at [radical][ital s] =1.8 TeV. This exclusive [chi][sub [ital c]] sample is used to measure the [chi][sub [ital c]]-meson production cross section times branching fractions. We obtain [sigma][times][ital B]=3.2[plus minus]0.4(stat)[sub [minus]1.1][sup +1.2](syst) nb for [chi][sub [ital c]] mesons decaying to [ital J]/[psi] with [ital p][sub [ital T]][gt]6.0 GeV/[ital c] and pseudorapidity [vert bar][eta][vert bar][lt]0.5. From this and the inclusive [ital J]/[psi] cross section we calculate the inclusive [ital b]-quark cross section to be 12.0[plus minus]4.5 [mu]b for [ital p][sub [ital T]][sup [ital b]][gt]8.5 GeV/[ital c] and [vert bar][ital y][sup [ital b]][vert bar][lt]1.
ISSN:	0031-9007 1079-7114
DOI:	10.1103/PhysRevLett.71.2537