Observation of orbitally excited B mesons in pp̄ collisions at √s=1.8 TeV
Physical Review D 64:7 (2001)
Abstract:
We measure the relative rate of production of orbitally excited (L=1) states of B mesons (B**) by observing their decays into Bπ±. We reconstruct B mesons through semileptonic decay channels using data collected pp̄ collisions at √s= 1.8 TeV. The fraction of light B mesons that are produced as L= 1B** states is measured to be 0.28±0.06(stat)±0.03(syst). We also measure the collective mass of the B** states, and quantify the result by quoting the (model-dependent) mass of the lowest B** state to be m(BStudy of B Decays to Charmonium States: B→ηcK and B → χc0K
Physical Review Letters American Physical Society (APS) 86:1 (2001) 30-34
Classical and quantum brane cosmology
AIP CONF PROC 555 (2001) 31-49
Abstract:
The first part of this lecture quickly touches upon some important but infrequently discussed issues in large extra dimension and warped extra dimension scenarios, with particular reference to effects in the early universe. The second part discusses a modification and extension of an earlier proposal by Brown and Teitelboim to relax the effective cosmological term by nucleation of fundamental membranes.First Measurement of the Ratio B(t-->Wb)/B(t-->Wq) and Associated Limit on the CKM Element Vtb
ArXiv hep-ex/0012029 (2000)