English
Related papers

Related papers: |V_ub| and |V_cb| from CLEO

200 papers

I report on studies of inclusive and exclusive semileptonic b -> c l nu and b -> u l nu decays in 9.7 million BBbar events accumulated with the CLEO detector in symmetric e^+e^- collisions produced in the Cornell Electron Storage Ring…

High Energy Physics - Experiment · Physics 2007-05-23 Andreas Warburton

We report a new measurement of the CKM parameter V_ub made with a sample of 9.7 million B B-bar events collected with the CLEO II detector. Using Heavy Quark theory, we combine the observed yield of leptons from semileptonic B decay in the…

High Energy Physics - Experiment · Physics 2010-04-08 A. Bornheim , CLEO Collaboration

Between 1990 and 2001, the CLEO II/II.V/III detectors at the Cornell Electron Storage Ring (CESR) have recorded over of 34 million B decays and nearly 60 million charm decays. A selection of the latest results in the electroweak sector from…

High Energy Physics - Experiment · Physics 2007-05-23 H. Schwarthoff

I report results from the CLEO collaboration on semileptonic B decays, highlighting measurements of the Cabibbo-Kobayashi-Maskawa matrix elements |V_cb| and |V_ub|. I describe the techniques used to obtain the recent improvements in…

High Energy Physics - Experiment · Physics 2011-01-25 Karl M. Ecklund

We present an analysis of the composition of inclusive semileptonic B meson decays using 9.4/fb of e+ e- data taken with the CLEO detector at the Upsilon(4S) resonance. In addition to measuring the charged lepton kinematics, the neutrino…

High Energy Physics - Experiment · Physics 2007-05-23 A. Bornheim , CLEO Collaboration

I report results from the CLEO collaboration on semileptonic B decays, highlighting measurements of the Cabibbo-Kobayashi-Maskawa matrix elements Vcb and Vub. I describe the techniques used to obtain the recent improvements in precision for…

High Energy Physics - Experiment · Physics 2019-08-14 Karl M. Ecklund

I report results from the CLEO collaboration on semileptonic B decays, highlighting measurements of the Cabibbo-Kobayashi-Maskawa matrix elements |Vub| and |Vcb|. I describe the techniques used to obtain the recent improvements in precision…

High Energy Physics - Experiment · Physics 2009-11-10 K. M. Ecklund

I report results in semileptonic decays of B mesons from the CLEO collaboration, with a focus on recent results. Results for exclusive reconstruction of B -> D* l nu, B -> D l nu and B -> rho l nu are given including the q^2 dependence of…

High Energy Physics - Experiment · Physics 2009-10-31 Karl M. Ecklund

I present recent CLEO measurements of inclusive semileptonic B decay spectra and the branching fraction. I also report preliminary results from a combined fit to spectral moments, which are compared to expectations in the Heavy Quark…

High Energy Physics - Experiment · Physics 2013-05-29 Karl M. Ecklund

The Belle experiment at the KEKB asymmetric energy e+e- collider recorded large data sets of both, B and Bs decays. Semileptonic decays B(s) -> X l nu (l = electron or muon) constitute approximately one fifth of the total decay width of…

High Energy Physics - Experiment · Physics 2013-05-17 Christian Oswald

We report studies of semileptonic decays, B --> X_c l nu, based on a sample of 88 million BB events recorded with the BABAR detector. We have measured four moments of the electron energy distribution and four moments of the hadronic mass…

High Energy Physics - Experiment · Physics 2017-08-23 Vera G. Luth

We report recent measurements from CLEO of the first two moments of the photon energy spectrum for b -> s gamma decays and the hadronic recoil mass in B -> X_c l nu. These physical quantities allow one to fix non-perturbative parameters…

High Energy Physics - Experiment · Physics 2019-08-14 Roy A. Briere

I report B physics results from the CLEO collaboration, highlighting measurements of the Cabibbo-Kobayashi-Maskawa matrix elements |Vcb| and |Vub|. I report a recent measurement of |Vub| through study of the q^2 dependence of B -> pi l nu…

High Energy Physics - Experiment · Physics 2019-08-14 Karl M. Ecklund

Some recent Babar results on semileptonic decays are presented. They focus on the determination of the CKM matrix elements |V_{ub}| and |V_{cb}| in inclusive and exclusive b --> u l nu and b--> c l nu decays, and on form factors measurement…

High Energy Physics - Experiment · Physics 2009-04-02 Justine Serrano

The CLEO Collaboration has extracted improved values of |V_cb| and |V_ub| from measurements of exclusive and inclusive decays of B mesons. The measurement of B -> D* ell nu at zero recoil combined with the predicted form factor F_D*(w_min)…

High Energy Physics - Experiment · Physics 2007-05-23 Stephen P. Pappas

Semileptonic decays of B mesons may be used in many different ways to probe the CKM matrix. Presented here are several recent results from the CLEO II experiment, all involving the analysis or utilization of semileptonic B decays.

High Energy Physics - Experiment · Physics 2007-05-23 K. Kinoshita

This contribution reviews several new or updated results on substructure in semi-hadronic tau decays, recently published by the CLEO Collaboration. These results are all based on data collected with the CLEO detector at Cornell's CESR…

High Energy Physics - Experiment · Physics 2014-11-17 Alan J. Weinstein

We present a determination of the CKM matrix element |Vub| based on the analysis of semileptonic B decays from a sample of 88 million Upsilon(4S) decays collected with the BABAR detector at the PEP-II e+e- storage ring. Charmless…

High Energy Physics - Experiment · Physics 2010-03-19 B. Aubert , BABAR Collaboration

The e-e+ collider LEP, running at sqrt{s} = m(Z0), has been a copious source of b-hadrons produced in decays Z0 -> b \b. We present recent studies using up to 4*10^6 hadronic Z0 decays acquired by the DELPHI detector between 1992 and 2000.…

High Energy Physics - Experiment · Physics 2007-05-23 Winfried A. Mitaroff

We present a preliminary determination of the CKM matrix element |Vub| based on the analysis of semileptonic B decays from a sample of 88 million Upsilon(4S) decays collected with the BaBar detector at the e+e- storage ring. Charmless…

High Energy Physics - Experiment · Physics 2007-05-23 B. Aubert , The BaBar Collaboration
‹ Prev 1 2 3 10 Next ›