A detailed investigation of the decay Y(2S)-+.rr+.rr-T( IS) has been made from 128 000 Y ( 2 S ) decays observed in the CLEO detector at the Cornell Electron Storage Ring (CESR). We find this branching ratio to be (19.1rtl.2rtO.6)%. The properties of the rrr system have been studied using 491 exclusive events of the type T (ZS)+r+.rr-T( IS), Y ( 1 S ) + e + e P or p + p -. Assuming e-p universality we find B ( T ( l S ) + p + p -) =(2.84+.0.18+.0.20)%. A search for Y ( 2 S ) + r ] Y ( 1s) yieldsan upper limit of 1% at the 90% confidence level for this branching ratio. We have also searched for [ Y ( 2 S ) or Y ( 3S)]+rr+.rr-Y( IS), Y ( lS)+noninteracting particles.

This paper reports measurements of the hadrons produced in the inelastic scattering of 147-GeV muons by protons and deuterons in an experiment carried out at Fermi National Accelerator Laboratory. Both the scattered muon and the hadrons were measured in a large spectrometer Properties of the hadron spectra are presented for proton, deuteron, and neutron targets and compared with theoretical models and with hadron spectra from related processes Emphasis is placed on the quark-parton model and the data are found to be in substantial agreement with it. The average transverse momentum of the hadrons with respect to the virtual photon direct~on shows no dependence on the muon scattering variables. The data display "jet behavior" of the inclusive hadrons comparable to that found in e+e-annihilat~ons.

jB-meson decays to final states consisting of a D° or D* £ and one or two charged pions have been observed. The charged-B mass is 5270.8± 2.3 ±2.0 MeV and the neutral-E mass is 5274.2±1.9±2.0 MeV. PACS numbers: 14.40.Jz, 13.25.+m, 13.65. + iThe upsiion states 1 are interpreted as q-q resonances of a new quark, the b quark. The first three resonances are narrow, 2 ' 3 implying bound b flavor and a suppressed strong decay. The large width of the T(4S) resonance discovered at the e + e~ storage ring CESR 4 (Cornell Electron Storage Ring) and the observation that the decay products from the T(4S) include high-momentum leptons 5 imply that the T(4S) decays strongly into BB meson pairs, which then decay weakly. Until now, however, the b-flavored mesons themselves had not been found. Here we report that

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