Related papers: $\vert V_{cb} \vert$ and $R(D^{(*)})$ using lattic…

Exclusive semileptonic $B \to \pi \ell \nu_\ell$ and $B_s \to K \ell \nu_\ell$ decays through unitarity and lattice QCD

The Cabibbo-Kobayashi-Maskawa (CKM) matrix element $\vert V_{ub}\vert$ is obtained from exclusive semileptonic $B \to \pi \ell \nu_\ell$ and $B_s \to K \ell \nu_\ell$ decays adopting the unitarity-based dispersion matrix approach for the…

High Energy Physics - Phenomenology · Physics 2022-08-24 G. Martinelli , S. Simula , L. Vittorio

Extraction of $|V_{cd}|$ and $|V_{cs}|$ from experimental decay rates using lattice QCD $D \to \pi(K) \ell \nu$ form factors

We present a determination of the Cabibbo-Kobayashi-Maskawa matrix elements $|V_{cd}|$ and $|V_{cs}|$ obtained by combining the momentum dependence of the semileptonic vector form factors $f_+^{D \to \pi}(q^2)$ and $f_+^{D \to K}(q^2)$,…

High Energy Physics - Lattice · Physics 2018-08-01 L. Riggio , G. Salerno , S. Simula

Non-perturbative bounds for $B \to D^{(*)}\ell\nu_{\ell}$ decays and phenomenological applications

We show how to extract the Cabibbo-Kobayashi-Maskawa (CKM) matrix element $\vert V_{cb} \vert$ from exclusive semileptonic $B \to D^{(*)}$ decays by using the Dispersive Matrix (DM) method. It is a new approach which allows to determine in…

High Energy Physics - Phenomenology · Physics 2021-11-25 Guido Martinelli , Silvano Simula , Ludovico Vittorio

Exclusive determinations of $\vert V_{cb} \vert$ and $R(D^{*})$ through unitarity

In this work we apply the Dispersive Matrix (DM) method of Refs. [1,2] to the lattice computations of the Form Factors (FFs) entering the semileptonic $B \to D^* \ell \nu_\ell$ decays, recently produced by the FNAL/MILC Collaborations [3]…

High Energy Physics - Phenomenology · Physics 2022-12-21 G. Martinelli , S. Simula , L. Vittorio

$|V_{cb}|$, LFU and $SU(3)_F$ symmetry breaking in $B_{(s)} \to D_{(s)}^{(*)} \ell \nu_\ell$ decays using Lattice QCD and Unitarity

We present an application of the unitarity-based dispersion matrix (DM) approach to the extraction of the CKM matrix element $|V_{cb}|$ from the experimental data on the exclusive semileptonic $B_{(s)} \to D_{(s)}^{(*)} \ell \nu_\ell$…

High Energy Physics - Phenomenology · Physics 2022-11-22 Guido Martinelli , Manuel Naviglio , Silvano Simula , Ludovico Vittorio

Exclusive B-meson semileptonic decays from unitarity and lattice QCD

We examine the semileptonic $B \to D^{(*)} \ell \nu_\ell$ and $B \to \pi \ell \nu_\ell$ decays adopting the unitarity-based Dispersive Matrix (DM) method, which allows to determine the shape of the relevant hadronic form factors (FFs) in…

High Energy Physics - Phenomenology · Physics 2022-03-31 G. Martinelli , M. Naviglio , S. Simula , L. Vittorio

$|V_{cb}|$, Lepton Flavour Universality and $SU(3)_F$ symmetry breaking in $B_s \to D_s^{(*)} \ell \nu_\ell$ decays through unitarity and lattice QCD

In addition to the well-known $B \to D^{(*)} \ell \nu_\ell$ decays, semileptonic $B_s \to D_s^{(*)} \ell \nu_\ell$ processes offer the possibility to determine the Cabibbo-Kobayashi-Maskawa (CKM) matrix element $\vert V_{cb}\vert$. We…

High Energy Physics - Phenomenology · Physics 2022-11-23 G. Martinelli , M. Naviglio , S. Simula , L. Vittorio

Extraction of $|V_{cb}|$ from two-body hadronic B decays

We propose a method of extracting the Cabibbo-Kobayashi-Maskawa matrix element $|V_{cb}|$ from two-body hadronic decay processes of $B\to DK$ with precisely determined form factors of $B$ meson semi-leptonic decays. The amplitude…

High Energy Physics - Phenomenology · Physics 2019-12-06 Noriaki Kitazawa , Kyo-suke Masukawa , Yuki Sakai

Determination of |Vcb| using the semileptonic decay \bar{B}^0 --> D^{*+}e^-\bar{\nu}

We present a measurement of the Cabibbo-Kobayashi-Maskawa (CKM) matrix element |Vcb| using a 10.2 fb^{-1} data sample recorded at the \Upsilon(4S) resonance with the Belle detector at the KEKB asymmetric e^+e^- storage ring. By…

High Energy Physics - Experiment · Physics 2008-11-26 Belle Collaboration , K. Abe

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

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

New parametrization of the form factors in $\bar{B}\to D\ell\bar{\nu}_\ell$ decays

A new model-independent parametrization is proposed for the hadronic form factors in the semileptonic $\bar{B}\to D\ell\bar{\nu}_\ell$ decay. By a combined consideration of the recent experimental and lattice QCD data, we determine…

High Energy Physics - Phenomenology · Physics 2020-02-14 De-Liang Yao , Pedro Fernandez-Soler , Feng-Kun Guo , Juan Nieves

Revisiting fits to $B^{0} \to D^{*-} \ell^{+} \nu_{\ell}$ to measure $|V_{cb}|$ with novel methods and preliminary LQCD data at non-zero recoil

We present a study of fits to exclusive $B^{0} \to D^{*-} \ell^{+} \nu_{\ell}$ measurements for the determination of the Cabbibo-Kobayashi-Maskawa matrix element magnitude $|V_{cb}|$, based on the most recent Belle untagged measurement.…

High Energy Physics - Phenomenology · Physics 2021-05-05 Daniel Ferlewicz , Phillip Urquijo , Eiasha Waheed

$B \rightarrow D l \nu$ Form Factors at Non-Zero Recoil and Extraction of $|V_{cb}|$

We present a lattice QCD calculation of the $B \rightarrow D l \nu$ semileptonic decay form factors $f_+(q^2)$ and $f_0(q^2)$ for the entire physical $q^2$ range. Non-relativistic QCD (NRQCD) bottom quarks and Highly Improved Staggered…

High Energy Physics - Lattice · Physics 2016-06-14 Heechang Na , Chris M. Bouchard , G. Peter Lepage , Chris Monahan , Junko Shigemitsu

Semileptonic form factors for $B \to D^\ast\ell\nu$ at nonzero recoil from 2 + 1-flavor lattice QCD

We present the first unquenched lattice-QCD calculation of the form factors for the decay $B\rightarrow D^\ast\ell\nu$ at nonzero recoil. Our analysis includes 15 MILC ensembles with $N_f=2+1$ flavors of asqtad sea quarks, with a strange…

High Energy Physics - Lattice · Physics 2022-12-22 A. Bazavov , C. E. DeTar , Daping Du , A. X. El-Khadra , E. Gámiz , Z. Gelzer , Steven Gottlieb , U. M. Heller , A. S. Kronfeld , J. Laiho , P. B. Mackenzie , J. N. Simone , R. Sugar , D. Toussaint , R. S. Van de Water , A. Vaquero

Semileptonic B decays matrix elements

We present some applications of the unitarity-based Dispersion Matrix (DM) approach to the extraction of the CKM matrix element $|V_{cb}|$ from the experimental data on the exclusive $B_{(s)} \to D_{(s)}^{(*)} \ell \nu_\ell$ decays. The DM…

High Energy Physics - Phenomenology · Physics 2022-05-20 Guido Martinelli , Manuel Naviglio , Silvano Simula , Ludovico Vittorio

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

The $B \to D \ell \nu$ form factors at nonzero recoil and $|V_{cb}|$ from $2+1$-flavor lattice QCD

We present the first unquenched lattice-QCD calculation of the hadronic form factors for the exclusive decay $\overline{B} \rightarrow D \ell \overline{\nu}$ at nonzero recoil. We carry out numerical simulations on fourteen ensembles of…

High Energy Physics - Lattice · Physics 2015-08-19 Fermilab Lattice , MILC Collaborations , : , Jon A. Bailey , A. Bazavov , C. Bernard , C. M. Bouchard , C. DeTar , Daping Du , A. X. El-Khadra , J. Foley , E. D. Freeland , E. Gámiz , Steven Gottlieb , U. M. Heller , J. Komijani , A. S. Kronfeld , J. Laiho , L. Levkova , P. B. Mackenzie , E. T. Neil , Si-Wei Qiu , J. Simone , R. Sugar , D. Toussaint , R. S. Van de Water , Ran Zhou

Determination of $|V_{us}|$ from a lattice-QCD calculation of the $K\to\pi\ell\nu$ semileptonic form factor with physical quark masses

We calculate the kaon semileptonic form factor $f_+(0)$ from lattice QCD, working, for the first time, at the physical light-quark masses. We use gauge configurations generated by the MILC collaboration with $N_f=2+1+1$ flavors of sea…

High Energy Physics - Phenomenology · Physics 2014-08-19 A. Bazavov , C. Bernard , C. Bouchard , C. DeTar , D. Du , A. X. El-Khadra , J. Foley , E. D. Freeland , E. Gámiz , Steven Gottlieb , U. M. Heller , J. Kim , A. S. Kronfeld , J. Laiho , L. Levkova , P. B. Mackenzie , E. T. Neil , M. B. Oktay , Si-Wei Qiu , J. N. Simone , R. Sugar , D. Toussaint , R. S. Van de Water , Ran Zhou

Updates on the determination of $\vert V_{cb} \vert$, $R(D^{*})$ and $\vert V_{ub} \vert/\vert V_{cb} \vert$

We present an updated determination of the values of $\vert V_{cb} \vert$, $R(D^*)$ and $\vert V_{ub} \vert/\vert V_{cb} \vert$ based on the new data on semileptonic $B \to D^* \ell \nu_\ell$ decays by the Belle and Belle-II Collaborations…

High Energy Physics - Phenomenology · Physics 2024-03-26 G. Martinelli , S. Simula , L. Vittorio