Heavy meson hyperfine splitting: A Complete 1/m(Q) calculation
TL;DR: In this article, the hyperfine splittings of an effective lagrangian with chiral, heavy flavour and spin symmetries are analyzed in the framework of a complete set of first order terms.
About: This article is published in Physics Letters B.The article was published on 1995-03-23 and is currently open access. It has received 11 citations till now. The article focuses on the topics: QCD sum rules.
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TL;DR: In this paper, the couplings of pions with heavy baryons were studied with light-cone QCD sum rules in the leading order of heavy quark effective theory, and the results are g(2)= 1.56+/-0.3, g(3) = 0.94 +/- 0.2.
6 citations
TL;DR: In this paper, the non-leptonic decays of B mesons into two mesons or meson resonances are studied on the basis of two versions of simple pole dominance models involving scalar, vector, pseudoscalar and axial vector poles.
Abstract: Nonleptonic decays of B mesons into two mesons or meson resonances are studied on the basis of two versions of simple pole dominance models involving scalar, vector, pseudoscalar and axial vector poles. The results are compared with those obtained from the usual factorization model and are used to obtain information on strong coupling constants between the B meson and one light or one charmed meson, respectively. These coupling constants are compared to results from various QCD sum rule calculations.
5 citations
TL;DR: In this paper, predictions of two channels in the three-bod decays of the charmed mesons are made within the heavy hadron chiral perturbation theory.
Abstract: Predictions of two channels in the three-bod decays of the charmed mesons are made within the heavy hadron chiral perturbation theory. There still exists the problem that the theoretical expectation is too small compared to the experimental data.
3 citations
TL;DR: In this paper, predictions of two channels in the three-body decays of the charmed mesons are made within heavy hadron chiral perturbation theory, but the theoretical expectation is too small compared to experimental data.
3 citations
TL;DR: In this article, mass formulas for the P$-wave orbitally excited heavy charmed mesons including all effects from one-loop corrections that contribute at leading order in chiral expansion were derived.
Abstract: We derive mass formulas for the $P$-wave orbitally excited $D^*_{0(s)}$, $D^\prime_{1(s)}$, $D_{1(s)}$, and $D^*_{2(s)}$ heavy charmed mesons including all effects from one-loop corrections that contribute at leading order in chiral expansion. In our formalism, the effects to first order in $m_q$, where $m_q$ is the light quark mass, and to first order in $m^{-1}_c$, where $m_c$ is the charm quark mass, and $m_q/m_c$ terms are considered. The experimental and lattice QCD results on the charmed meson spectra are employed to fix the large number of counterterms appearing in the effective chiral Lagrangian used in this work. This allows us to test the validity of perturbative expansion of our theory. The results presented in the current paper are useful to other applications of excited charmed and bottom meson systems.
3 citations
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Tohoku University1, University of Zurich2, Lawrence Berkeley National Laboratory3, Stanford University4, College of William & Mary5, University of Urbino6, CERN7, Budker Institute of Nuclear Physics8, University of California, Irvine9, Cornell University10, Argonne National Laboratory11, ETH Zurich12, Tata Institute of Fundamental Research13, Hillsdale College14, Spanish National Research Council15, Ohio State University16, University of Notre Dame17, Kent State University18, University of California, San Diego19, University of California, Berkeley20, University of Minnesota21, University of Alabama22, University of Helsinki23, Los Alamos National Laboratory24, California Institute of Technology25, George Washington University26, Syracuse University27, Lawrence Livermore National Laboratory28, Oklahoma State University–Stillwater29, University of Washington30, Max Planck Society31, Boston University32, University of California, Los Angeles33, Royal Holloway, University of London34, Université Paris-Saclay35, University of Pennsylvania36, University of Illinois at Urbana–Champaign37, University of Bristol38, University of Tokyo39, University of Delaware40, Carnegie Mellon University41, University of California, Santa Cruz42, Karlsruhe Institute of Technology43, Heidelberg University44, Florida State University45, University of Mainz46, University of Edinburgh47, Brookhaven National Laboratory48, Durham University49, University of Lausanne50, Massachusetts Institute of Technology51, University of Southampton52, Nagoya University53, University of Oxford54, Northwestern University55, University of British Columbia56, Columbia University57, Lund University58, University of Sheffield59, University of California, Santa Barbara60, Iowa State University61, University of Alberta62, University of Cambridge63
TL;DR: This biennial Review summarizes much of Particle Physics using data from previous editions, plus 2205 new measurements from 667 papers, and features expanded coverage of CP violation in B mesons and of neutrino oscillations.
Abstract: This biennial Review summarizes much of Particle Physics. Using data from previous editions, plus 2205 new measurements from 667 papers, we list, evaluate, and average measured properties of gauge bosons, leptons, quarks, mesons, and baryons. We also summarize searches for hypothetical particles such as Higgs bosons, heavy neutrinos, and supersymmetric particles. All the particle properties and search limits are listed in Summary Tables. We also give numerous tables, figures, formulae, and reviews of topics such as the Standard Model, particle detectors, probability, and statistics. This edition features expanded coverage of CP violation in B mesons and of neutrino oscillations. For the first time we cover searches for evidence of extra dimensions (both in the particle listings and in a new review). Another new review is on Grand Unified Theories. A booklet is available containing the Summary Tables and abbreviated versions of some of the other sections of this full Review. All tables, listings, and reviews (and errata) are also available on the Particle Data Group website: http://pdg.lbl.gov.
5,143 citations
TL;DR: The flavor and spin symmetry of the heavy quarks and the spontaneously broken approximate SU(3){sub {ital L}}{times} SU( 3){ sub {ital R}} chiral symmetry ofThe light quarks are exploited to formulate a theory describing the low-energy interactions of theheavy mesons and heavy baryons with the Goldstone bosons.
Abstract: The flavor and spin symmetry of the heavy quarks and the spontaneously broken approximate ${\mathrm{SU}(3)}_{L}\ifmmode\times\else\texttimes\fi{}{\mathrm{SU}(3)}_{R}$ chiral symmetry of the light quarks are exploited to formulate a theory describing the low-energy interactions of the heavy mesons ($Q\overline{q}$ bound states) and heavy baryons (${\mathrm{Qq}}_{1}{q}_{2}$ bound states) with the Goldstone bosons $\ensuremath{\pi}$, $K$, and $\ensuremath{\eta}$. The theory contains only three parameters independent of the number of heavy-quark species involved. They can be determined by the decays ${D}^{*}\ensuremath{\rightarrow}D+\ensuremath{\pi}$, ${\ensuremath{\Sigma}}_{c}\ensuremath{\rightarrow}{\ensuremath{\Lambda}}_{c}+\ensuremath{\pi}$, and ${\ensuremath{\Sigma}}_{c}^{*}\ensuremath{\rightarrow}{\ensuremath{\Sigma}}_{c}+\ensuremath{\pi}$. Theoretically, these coupling constants are related, through partial conservation of axial-vector current, to the axial charges of the heavy mesons and the heavy baryons. They are all calculable in the nonrelativistic quark model by using the spin wave functions of these particles alone. The theory is applied to strong decays and semileptonic weak decays of the heavy mesons and baryons. The implications are also discussed.
456 citations
TL;DR: In this paper, the chiral symmetric couplings of pions to heavy mesons (B or D) are described in the portion of phase space where the pions have low momentum.
410 citations
TL;DR: In this paper, the authors pointed out that the multi-gluon operators, relevant to the sum rules, do not factorize at large N c. This implies that the masterfield, even if it is found, will be of no immediate help in evaluating the quarkonium spectrum.
221 citations
TL;DR: In this paper, an effective lagrangian including negative and positive parity heavy mesons containing a heavy quark, light pseudoscalars, and light vector resonances, with their allowed interactions, was introduced.
115 citations