Related papers: Extraction of $|V_{cb}|$ from two-body hadronic B …

Measurement of the form factors of the decay B^0 -> D^{*-} l^+ nu_l and determination of the CKM matrix element |V_{cb}|

This paper describes a determination of the Cabibbo-Kobayashi-Maskawa matrix element $|V_{cb}|$ using the decay $B^0\to D^{*-}\ell^+\nu_\ell$. We perform a combined measurement of this quantity and of the form factors $\rho^2$, $R_1(1)$,…

High Energy Physics - Experiment · Physics 2008-10-10 The Belle Collaboration , I. Adachi

Measurement of the form factors of the decay B0 -> D*- ell+ nu and determination of the CKM matrix element |Vcb|

This article describes a determination of the Cabibbo-Kobayashi-Maskawa matrix element $|V_{cb}|$ from the decay $B^0\to D^{*-}\ell^+\nu_\ell$ using 711 fb$^{-1}$ of Belle data collected near the $\Upsilon(4S)$ resonance. We simultaneously…

High Energy Physics - Experiment · Physics 2011-02-02 W. ~Dungel , C. ~Schwanda , I. ~Adachi , H. ~Aihara , T. ~Aushev , T. ~Aziz , A. ~M. ~Bakich , V. ~Balagura , E. ~Barberio , M. ~Bischofberger , A. ~Bozek , M. ~Bračko , T. ~E. ~Browder , P. ~Chang , Y. ~Chao , A. ~Chen , P. ~Chen , B. ~G. ~Cheon , R. ~Chistov , I. -S. ~Cho , K. ~Cho , K. -S. ~Choi , Y. ~Choi , J. ~Dalseno , A. ~Drutskoy , S. ~Eidelman , H. ~Ha , J. ~Haba , H. ~Hayashii , Y. ~Horii , Y. ~Hoshi , W. -S. ~Hou , T. ~Iijima , K. ~Inami , M. ~Iwabuchi , Y. ~Iwasaki , N. ~J. ~Joshi , T. ~Julius , J. ~H. ~Kang , T. ~Kawasaki , H. ~J. ~Kim , H. ~O. ~Kim , J. ~H. ~Kim , M. ~J. ~Kim , Y. ~J. ~Kim , K. ~Kinoshita , B. ~R. ~Ko , P. ~Krokovny , T. ~Kuhr , T. ~Kumita , A. ~Kuzmin , Y. -J. ~Kwon , S. -H. ~Kyeong , M. ~J. ~Lee , S. -H. ~Lee , J. ~Li , A. ~Limosani , C. ~Liu , Y. ~Liu , D. ~Liventsev , R. ~Louvot , A. ~Matyja , S. ~McOnie , H. ~Miyata , R. ~Mizuk , G. ~B. ~Mohanty , T. ~Mori , E. ~Nakano , M. ~Nakao , Z. ~Natkaniec , S. ~Neubauer , S. ~Nishida , O. ~Nitoh , T. ~Nozaki , T. ~Ohshima , S. ~Okuno , S. ~L. ~Olsen , G. ~Pakhlova , C. ~W. ~Park , H. ~Park , H. ~K. ~Park , M. ~Petrič , L. ~E. ~Piilonen , M. ~Prim , M. ~Röhrken , M. ~Rozanska , S. ~Ryu , H. ~Sahoo , K. ~Sakai , Y. ~Sakai , O. ~Schneider , A. ~J. ~Schwartz , K. ~Senyo , M. ~E. ~Sevior , J. -G. ~Shiu , J. ~B. ~Singh , P. ~Smerkol , A. ~Sokolov , S. ~Stanič , M. ~Starič , T. ~Sumiyoshi , S. ~Suzuki , S. ~Tanaka , G. ~N. ~Taylor , Y. ~Teramoto , K. ~Trabelsi , S. ~Uehara , T. ~Uglov , Y. ~Unno , S. ~Uno , P. ~Urquijo , G. ~Varner , K. ~E. ~Varvell , K. ~Vervink , C. ~H. ~Wang , P. ~Wang , M. ~Watanabe , Y. ~Watanabe , R. ~Wedd , K. ~M. ~Williams , E. ~Won , Y. ~Yamashita , D. ~Zander , Z. ~P. ~Zhang , P. ~Zhou , V. ~Zhulanov , T. ~Zivko

Semileptonic B Decays in Babar

BaBar measurements involving semileptonic decays of B mesons are reviewed. Attention is focused on the extraction of |Vub| and |Vcb| elements of the Cabibbo-Kobayashi-Maskawa quark mixing matrix. Recent results of inclusive and exclusive…

High Energy Physics - Experiment · Physics 2017-08-23 A. Sarti

New determination of $|V_{ub}/V_{cb}|$ from $B_s^0\to \lbrace K^-, D_s^- \rbrace \mu^+\nu$

We update the full set of $\bar{B}_s\rightarrow K$ form factors using light-cone sum rules with an on-shell kaon. Our approach determines the relevant sum rule parameters -- the duality thresholds -- from a Bayesian fit for the first time.…

High Energy Physics - Phenomenology · Physics 2023-11-14 Carolina Bolognani , Danny van Dyk , K. Keri Vos

Exclusive semileptonic $B$-meson decays using lattice QCD and unitarity

We present the results of the application of the Dispersion Matrix approach to exclusive semileptonic $B$-meson decays. This method allows to determine the hadronic form factors in a non-perturbative and completely model-independent way.…

High Energy Physics - Phenomenology · Physics 2022-11-30 G. Martinelli , M. Naviglio , S. Simula , L. Vittorio

Determination of the Cabibbo-Kobayashi-Maskawa matrix element $|V_{cb}|$

In this review we present and discuss the determination of the magnitude of the Cabibbo-Kobayashi-Maskawa (CKM) matrix parameter $V_{cb}$. The CKM matrix parametrizes the weak charged current interactions of quarks in the Standard Model…

High Energy Physics - Phenomenology · Physics 2020-09-29 Giulia Ricciardi , Marcello Rotondo

Measurement of |V_cb| and the Form-Factor Slope in Bbar -> D l- nubar Decays in Events Tagged by a Fully Reconstructed B Meson

We present a measurement of the Cabibbo-Kobayashi-Maskawa matrix element |V_cb| and the form-factor slope rho^2 in Bbar -> Dl- nubar decays based on 460 million BBar events recorded at the Upsilon(4S) resonance with the BaBar detector. BBar…

High Energy Physics - Experiment · Physics 2010-04-12 The BABAR Collaboration , B. Aubert

The DM approach to semileptonic heavy-to-heavy and heavy-to-light $B$ decays

We present the results of the application of the Dispersion Matrix approach to semileptonic heavy-to-heavy and heavy-to-light $B$-meson decays. This method allows to determine the hadronic form factors in a non-perturbative and…

High Energy Physics - Phenomenology · Physics 2022-11-29 G. Martinelli , M. Naviglio , S. Simula , L. Vittorio

Semileptonic B-Meson Decays at BaBar

Presented are selected results of semileptonic B decays at BaBar. Two measurements of the Cabibbo-Kobayashi-Maskawa matrix element $|V_{cb}|$ are reported. One using moments of the hadronic-mass spectrum in inclusive $\bar{B} \to X_{c}…

High Energy Physics - Experiment · Physics 2019-08-13 M. Sigamani

Determination of |V_ub| from Measurements of the Inclusive Charmless Semileptonic Partial Rates of B Mesons using Full Reconstruction Tags

We present a measurement of the Cabibbo-Kobayashi-Maskawa matrix element |V_ub|, based on 253 fb^-1 of data collected by the Belle detector at the KEKB e^+e^- asymmetric collider. Events are tagged by fully reconstructing one of the B…

High Energy Physics - Experiment · Physics 2008-11-26 Belle Collaboration , I. Bizjak

A closer look at the extraction of $|V_{ub}|$ from $B\to\pi l\nu$

To extract the Cabibbo-Kobayashi-Maskawa (CKM) matrix element $|V_{ub}|$, we have re-analyzed all the available inputs (data and theory) on the $B\to\pi l\nu$ decays including the newly available inputs on the form-factors from light cone…

High Energy Physics - Phenomenology · Physics 2021-07-28 Aritra Biswas , Soumitra Nandi , Sunando Kumar Patra , Ipsita Ray

Comments on $\left|\frac{V_{ub}}{V_{cb}}\right|$ and $|V_{ub}|$ from Non-leptonic $B$ Decays within the Perturbative QCD Approach

We revisited the extracting $\left|V_{ub}/V_{cb}\right|$ and $|V_{ub}|$ through calculating the ratios ${\cal B}(B^0\to D_s^{(*)+}(\pi^-,\rho^-)/ {\cal B}(B^0\to D_s^{(*)+} D^{(*)-})$ in the perturbative QCD approach, which is regarded as…

High Energy Physics - Phenomenology · Physics 2011-03-03 C. S. Kim , Ying Li

Challenges in Semileptonic B Decays

Two of the elements of the Cabibbo-Kobayashi-Maskawa quark mixing matrix, $|V_{ub}|$ and $|V_{cb}|$, are extracted from semileptonic B decays. The results of the B factories, analysed in the light of the most recent theoretical…

High Energy Physics - Phenomenology · Physics 2020-10-26 P. Gambino , A. S. Kronfeld , M. Rotondo , C. Schwanda , F. Bernlochner , A. Bharucha , C. Bozzi , M. Calvi , L. Cao , G. Ciezarek , C. T. H. Davies , A. X. El-Khadra , S. Hashimoto , M. Jung , A. Khodjamirian , Z. Ligeti , E. Lunghi , V. Luth , T. Mannel , S. Meinel , G. Paz , S. Schacht , S. Simula , W. Sutcliffe , A. Vaquero Aviles-Casco

New determination of $|V_{\rm cb}|$ using the three-loop QCD corrections for the $B\to D^{\ast}$ semi-leptonic decays

We present a new determination of the Cabibbo-Kobayashi-Maskawa matrix element $|V_{\rm cb}|$ by using the three-loop perturbative QCD corrections for the $B\to D^{\ast}$ semi-leptonic decay. The decay width of $B\to D^{\ast}$ semi-leptonic…

High Energy Physics - Phenomenology · Physics 2023-01-25 Hua Zhou , Qing Yu , Xu-Chang Zheng , Hai-Bing Fu , Xing-Gang Wu

An Extraction of Vcb from the Semi-Leptonic B->D* Decay

We present an extraction of Vcb from a lattice calculation of the B->D* decay matrix elements. We obtain |Vcb| \sqrt{ \frac{ \tauB }{ 1.49 ps } } = 0.037^{+3 \ +5}_{-3 \ -5} from a single parameter fit to the new CLEO data. Email…

High Energy Physics - Lattice · Physics 2010-11-01 Nicholas Hazel

Determination of |Vcb| and m_b from Inclusive B -> X_c l nu and B -> X_s gamma Decays at Belle

We present an analysis of the Belle measured moments of the lepton energy and hadronic mass spectra in B -> X_c l nu decays and the photon energy spectrum in B -> X_s gamma decays using theoretical expressions derived in the 1S and kinetic…

High Energy Physics - Experiment · Physics 2019-08-14 K. Abe

Phenomenology of semileptonic B-meson decays with form factors from lattice QCD

We study the exclusive semileptonic $B$-meson decays $B\to K(\pi)\ell^+\ell^-$, $B\to K(\pi)\nu\bar\nu$, and $B\to\pi\tau\nu$, computing observables in the Standard model using the recent lattice-QCD results for the underlying form factors…

High Energy Physics - Phenomenology · Physics 2016-02-16 Daping Du , A. X. El-Khadra , Steven Gottlieb , A. S. Kronfeld , J. Laiho , E. Lunghi , R. S. Van de Water , Ran Zhou

Study of the leptonic decays of pseudoscalar $B, D$ and vector $B^*, D^*$ mesons and of the semileptonic $B\to D$ and $B\to D^*$ decays

We present results for different observables in weak decays of pseudoscalar and vector mesons with a heavy $c$ or $b$ quark. The calculations are done in a nonrelativistic constituent quark model improved at some instances by heavy quark…

High Energy Physics - Phenomenology · Physics 2009-11-11 C. Albertus , E. Hernández , J. Nieves , J. M. Verde-Velasco

Measurement of the form factors of the decay B^+\to\bar D^{*0}\ell^+\nu_\ell and determination of the CKM matrix element |V_{cb}|

We present a measurement of the Cabibbo-Kobayashi-Maskawa matrix element $|V_{cb}|$ times the form factor normalization $\mathcal{F}(1)$ using the decay $B^+\to\bar D^{*0}\ell^+\nu_\ell$. This measurement is performed together with a…

High Energy Physics - Experiment · Physics 2012-08-27 The Belle Collaboration

Determination of the Form Factors for the Decay B0 --> D*-l+nu_l and of the CKM Matrix Element |Vcb|

We present a combined measurement of the Cabibbo-Kobayashi-Maskawa matrix element $|V_{cb}|$ and of the parameters $\rho^2$, $R_1$, and $R_2$, which fully characterize the form factors of the $B^0 \to D^{*-}\ell^{+}\nu_\ell$ decay in the…

High Energy Physics - Experiment · Physics 2007-05-23 The BABAR Collaboration , B. Aubert