115309491
Experimental results for charmless hadronic B decays
121273996
A study of double tagged two-photon reactions at spear☆
Abstract We have identified 262 doubly tagged two-photon events. A subset of the data shows an enhancement of 21 events in the inclusive two-photon mass squared distribution between 0.8 and 2.2 GeV 2 . If these events result from spin 2 resonance production then Γ γγ = 9.5 ± 3.9 ± 2.4 keV (statistical and systematic). From another subset of 58 events in which the final state could be classified we determine the two-photon hadron to muon cross section ratio R γγ = 1.1 ± 0.3 ± 0.3.
124046826
CHARMLESS HADRONIC B DECAYS WITH THE FULL CLEO DATA SAMPLE
120150178
Measurement of anomalous muon pair production in electron-positron annihilations
We have observed 16 events of the type ..mu../sup +/..mu../sup -/ + (missing energy and momentum) from e/sup +/e/sup -/ annihilations at center-of-mass energies between 6.4 and 7.4 GeV. Taking into account QED backgrounds, we find an excess of 11 anomalous dimuon events. If these are attributed to the production and subsequent decay of a pair of heavy leptons L/sup + -/, we obtain the muonic braching ratio B ((L/sup +/ ..-->.. ..mu../sup +/..nu../sub ..mu../nu-bar/sub L/)/ (L/sup +/ ..-->.. all)) = 0.22/sup +0.07//sub -0.08/.
35600922
Measurement of the branching fraction for D+-->K- pi + pi +
Using the CLEO-II detector at CESR we have measured the ratio of branching fractions, B(D+ → K−π+π+)/B(D0 → K−π+) = 2.35 ± 0.16 ± 0.16. Our recent measurement of B(D0 → K−π+) then gives B(D+ → K−π+π+) =
118566473
B Physics at threshold: Recent results from ARGUS and CLEO-II
14067577
NLO corrections to differential cross sections for pseudo-scalar Higgs boson production
Abstract We have computed the full next-to-leading (NLO) QCD corrections to the differential distributions d 2 σ/(dp T dy) for pseudo-scalar Higgs (A) production at large hadron colliders. This calculation has been carried out using the effective Lagrangian approach which is valid as long as the mass of the pseudo-scalar Higgs boson m A and its transverse momentum p T do not exceed the top-quark mass  m t . The shape of the distributions hardly differ from those obtained for scalar Higgs (H) production because, apart from the overall coupling constant and mass, there are only small differences between the partonic differential distributions for scalar and pseudo-scalar production. Therefore, there are only differences in the magnitudes of the hadronic differential distributions which can be mainly attributed to the unknown mixing angle β describing the pseudo-scalar Higgs coupling to the top quarks.
123015361
Electromagnetic production of trimuons in muon scattering: Bethe-Heitler reactions with muon and heavy-lepton pairs
We analyze the Bethe-Heitler production of muon and heavy-lepton pairs using high-energy muon beams on a variety of targets. We give results for coherent production from a nucleus, for incoherent production from individual protons and neutrons, and for deep-inelastic production. Differential distributions are presented for the final leptons and the effects of experimental cuts are considered. This work complements our previous study of trimuon production via muon radiation, Compton radiation, and hadronic final-state interactions.
120089418
Electron Signals from Heavy Lepton Cascade Decays
118873441
Variable number schemes for heavy quark electroproduction
We compare variable number schemes for heavy quark electroproduction
122279127
Difficulties in the determination of the gluon distribution function from electroproduction of charmed quarks
Abstract The QCD corrections to the charmed (anti) quark inclusive differential distributions in photoproduction and electroproduction are investigated. Here electroproduction is treated in the Weizsacker-Williams approximation. We show that at HERA energies the extraction of the gluon distribution function in the proton is hampered by the presence of the resolved component of the photon.