Related papers: B mesons and form factors

Mesonic Form Factors and the Isgur-Wise Function on the Light-Front

Within the light-front framework, form factors for $P\to P$ and $P\to V$ transitions ($P$: pseudoscalar meson, $V$: vector meson) due to the valence-quark configuration are calculated directly in the entire physical range of momentum…

High Energy Physics - Phenomenology · Physics 2009-10-28 Hai-Yang Cheng , Chi-Yee Cheung , Chien-Wen Hwang

QCD Calculation of $B$ Meson Form Factors and Exclusive Nonleptonic Decays

The method of QCD sum rules has proven to be particularly useful in heavy quark physics, where a small distance scale is provided by the inverse heavy quark mass. We present two new examples for the application of this method to B-physics:…

High Energy Physics - Phenomenology · Physics 2009-09-25 A. Khodjamirian , R. Rückl

Recent Developments in the Theory of Heavy-Quark Decays

I report on recent developments in the heavy-quark effective theory and its application to $B$ meson decays. The parameters of the effective theory, the spin-flavor symmetry limit, and the leading symmetry-breaking corrections to it are…

High Energy Physics - Phenomenology · Physics 2007-05-23 Matthias Neubert

Exclusive semileptonic and nonleptonic decays of B mesons to orbitally excited light mesons

The form factors of weak decays of the B meson to orbitally excited scalar, axial vector and tensor light mesons are calculated in the framework of the QCD-motivated relativistic quark model based on the quasipotential approach.…

High Energy Physics - Phenomenology · Physics 2013-04-12 D. Ebert , R. N. Faustov , V. O. Galkin

Form Factors for Exclusive Semileptonic $B$--Decays

We investigate the form factors for exclusive semileptonic decays of $B$-meson to $D,~D^*$, based on the parton picture and helped by the results of the HQET. We obtain the numerical results for the slope of the Isgur-Wise function, which…

High Energy Physics - Phenomenology · Physics 2015-06-25 C. S. Kim , Jae Kwan Kim , Yeong Gyun Kim , Kang Young Lee

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

B-Meson Wavefunction in the Wandzura-Wilczek Approximation

The B-meson wavefunction has been studied with the help of the vacuum-to-meson matrix element of the nonlocal operators in the heavy quark effective theory. In order to obtain the Wandzura-Wilczek-type B-meson wavefunction, we solve the…

High Energy Physics - Phenomenology · Physics 2009-11-10 Tao Huang , Xing-Gang Wu , Ming-Zhen Zhou

Radiative leptonic decays of B mesons in QCD

We compute the form factors parametrizing radiative leptonic decays of heavy mesons B^+\to\gamma e^+\nu for photon energies much larger than \Lambda_{QCD}, where perturbative QCD methods for exclusive processes can be combined with the…

High Energy Physics - Phenomenology · Physics 2011-05-05 Gregory P. Korchemsky , Dan Pirjol , Tung-Mow Yan

A Study of Heavy-Light Mesons on the Transverse Lattice

We present results from a study of meson spectra and structure in the limit where one quark is infinitely heavy. The calculations, based on the framework of light-front QCD formulated on a transverse lattice, are the first non-perturbative…

High Energy Physics - Phenomenology · Physics 2009-11-07 Matthias Burkardt , Sudip K. Seal

Heavy-heavy form factors and generalized factorization

We reanalyze B -> D pi and B -> K J/psi data to extract a set of parameters which give the relevant hadronic matrix elements in terms of factorized amplitudes. Various sources of theoretical uncertainties are studied, in particular those…

High Energy Physics - Phenomenology · Physics 2011-09-13 M. Ciuchini , R. Contino , E. Franco , G. Martinelli

Semi-Leptonic Decays of $B$-Mesons

Form factors relevant for semi-leptonic $B\to D,\ D^*$ decays are obtained in quenched lattice QCD. Tests of heavy-quark symmetry as well as determinations of the Isgur-Wise function and $|V_{cb}|$ are presented.

High Energy Physics - Lattice · Physics 2010-11-01 Laurent Lellouch

From Kondo Model and Strong Coupling Lattice QCD to the Isgur-Wise Function

Isgur-Wise functions parametrise the leading behaviour of weak decay form factors of mesons and baryons containing a single heavy quark. The form factors for the quark mass operator are calculated in strong coupling lattice QCD, and…

High Energy Physics - Phenomenology · Physics 2007-05-23 Apoorva Patel

Combined analysis of semileptonic $B$ decays to $D$ and $D^*$: $R(D^{(*)})$, $|V_{cb}|$, and new physics

The measured $\bar{B}\to D^{(*)} l \bar\nu$ decay rates for light leptons ($l=e,\mu$) constrain all $\bar{B}\to D^{(*)}$ semileptonic form factors, by including both the leading and ${\cal O}(\Lambda_{\text{QCD}}/m_{c,b})$ subleading…

High Energy Physics - Phenomenology · Physics 2019-01-21 Florian U. Bernlochner , Zoltan Ligeti , Michele Papucci , Dean J. Robinson

Using Heavy Quark Spin Symmetry in Semileptonic $B_c$ Decays

The form factors parameterizing the B_c semileptonic matrix elements can be related to a few invariant functions if the decoupling of the spin of the heavy quarks in B_c and in the mesons produced in the semileptonic decays is exploited. We…

High Energy Physics - Phenomenology · Physics 2011-03-23 P. Colangelo , F. De Fazio

The phenomenology of rare and semileptonic B decays

We summarize recent progress in the theory of exclusive rare and semileptonic B decays, focusing on model-independent results. The heavy-to-light form factors parameterizing these decays admit a model-independent description in two distinct…

High Energy Physics - Phenomenology · Physics 2011-01-27 Dan Pirjol , Iain W. Stewart

Heavy Quarks from QCD Spectral Sum Rules

This is a short review of the present status of the dynamics of the heavy quarks extracted from QCD spectral sum rules. We discuss the determination of the ``perturbative" quark mass, the decay constants of the $D$ and $B$ mesons, the form…

High Energy Physics - Phenomenology · Physics 2008-02-03 S. Narison

Meson distribution amplitudes - applications to weak radiative B decays and B transition form factors

This thesis examines the applications and determinations of meson light-cone distribution amplitudes. The investigation of such processes, in the context of $B$ physics, provides one with a rich and extensive way of determining the Standard…

High Energy Physics - Phenomenology · Physics 2007-10-25 Gareth Warren Jones

$D_{sJ}(2860)$ From The Semileptonic Decays Of $B_s$ Mesons

In the framework of heavy quark effective theory, the leading order Isgur-Wise form factors relevant to semileptonic decays of the ground state $\bar{b}s$ meson $B_{s}$ into orbitally excited $D$-wave $\bar{c}s$ mesons, including the newly…

High Energy Physics - Phenomenology · Physics 2015-07-15 Long-Fei Gan , Jian-Rong Zhang , Ming-Qiu Huang , Hong-Bin Zhuo , Yan-Yun Ma , Qing-Jun Zhu , Jian-Xun Liu , Guo-Bo Zhang

Toward accurate form factors for $B$-to-light meson decay from lattice QCD

We present the results of a lattice QCD calculation of the scalar and vector form factors for the unphysical $B_s\to\eta_s$ decay, over the full physical range of $q^2$. This is a useful testing ground both for lattice QCD and for our wider…

High Energy Physics - Lattice · Physics 2021-05-19 W. G. Parrott , C. Bouchard , C. T. H. Davies , D. Hatton

Semi-Leptonic B Meson Decays to Excited D Mesons in the Covariant Oscillator Quark Model

The spectra and branching ratios of the weak semi-leptonic B meson decays to the first excited D mesons are predicted, taking into account the confined effects of quarks using the covariant oscillator quark model (COQM). In the COQM the…

High Energy Physics - Phenomenology · Physics 2009-10-31 Masuho Oda , Kazunori Nishimura , Muneyuki Ishida , Shin Ishida