منابع مشابه
S-wave charmed mesons in lattice NRQCD
Heavy-light mesons can be studied using the 1/M expansion of NRQCD, provided the heavy quark mass is sufficiently large. Calculations of the S-wave charmed meson masses from a classically and tadpole-improved action are presented. A comparison of O(1/M), O(1/M) and O(1/M) results allows convergence of the expansion to be discussed. It is shown that the form of discretized heavy quark propagatio...
متن کاملS and P - wave heavy - light mesons in lattice NRQCD
The mass spectrum of S and P-wave mesons containing a single heavy quark is computed in the quenched approximation, using NRQCD up to third order in the inverse heavy quark mass expansion. Previous results found the expansion to break down near the charm quark mass for the S-wave spin splitting. The present work considers variations such as anisotropic lattices, Landau link tadpole improvement,...
متن کاملProperties of the Charmed P-wave Mesons
Two broad charmed mesons, the D∗ 0 and D ′ 1, have recently been observed. We examine the quark model predictions for the D∗ 0 and D ′ 1 properties and discuss experimental measurements that can shed light on them. We find that these states are well described as the broad, j = 1/2 non-strange charmed P -wave mesons. Understanding the D∗ 0 and D ′ 1 states can provide important insights into the...
متن کاملThe charmed and bottom meson spectrum from lattice NRQCD
B (∗) s ) are well known experimentally, and thus provide a testing ground for the lattice method. In particular, they can be used to examine the convergence properties of the heavy quark expansion in nonrelativistic QCD (NRQCD),[1] which is the most economical lattice action available for heavy quark physics.[2] The spectrum of P-wave heavy-light mesons is not yet understood, experimentally no...
متن کاملHadronic production of S-wave and P-wave charmed b mesons via heavy quark fragmentation.
At hadron colliders the dominant production mechanism of (b̄c) mesons with large transverse momentum is due to parton fragmentation. We compute the rates and transverse momentum spectra for production of S-wave and P-wave (b̄c) mesons at the Tevatron via the direct fragmentation of the bottom antiquark as well as the AltarelliParisi induced gluon fragmentation. Since all the radially and orbitall...
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ژورنال
عنوان ژورنال: Nuclear Physics B - Proceedings Supplements
سال: 1999
ISSN: 0920-5632
DOI: 10.1016/s0920-5632(99)85064-6