搜索结果: 1-15 共查到“B Decays”相关记录106条 . 查询时间(0.156 秒)
Root decays as a potential predisposition factor of a bark beetle disaster in the Šumava Mts.
Armillaria bark beetle Ips typographus
2015/1/29
Root decay infection and potential relations to Ips typographus L. outbreaks in the Šumava Mts. (Bohemian Forest) were monitored in 3 permanent sample plots. As an originator of root decays honey...
Two Comparative Case Studies of b-quark and c-quark Physics: • Particle-antiparticle Mixing • Radiative Weak Decays
Dollar mixed weak radioactive decay D meson pseudo-scalar meson particle antiparticles
2014/12/23
We discuss prospects for detecting the two charm-related phenomena of $D^0$-${\bar D}^0$ mixing and weak radiative decays of $D$ mesons ({\it e.g.} $D\to K^* + \gamma$). A general update of particle-a...
RADIATIVE WEAK DECAYS OF CHARM MESONS
The standard model radiation conversion pseudo-scalar meson D radiation electromagnetic penguins amplitude and amplitude
2014/12/23
We address standard model predictions for flavor-changing radiative transitions of the pseudoscalar charm mesons. Short-distance contributions in D radiative transitions are contrasted with those in B...
Is B→Xsγ equal to b→sγ? Spectator contributions to rare inclusive B decays
With perturbation quark-gluon hadron attenuation photon spectral lines the photon energy
2014/12/23
In B→Xsγ, there are perturbative QCD corrections at order αs not only to the single quark line process b→sγ but also coming from a set of diagrams where the weak interaction vertex involves a gluon wh...
Systematics of soft final-state interactions in B decays
Traditional expectations state interaction inelastic scattering
2014/12/23
By using very general and well established features of soft strong interactions we show, contrary to conventional expectations, that (i) soft final-state interactions (FSI) do not disappear for large ...
Factorization in non-leptonic decays of heavy mesons
Model calculation the heavy meson decays pseudoscalar transformation
2014/12/22
We propose a QCD-based model for calculation of the non-perturbative corrections to the factorization approximation in the decays of heavy mesons. In the framework of the model, factorization in pseud...
The leading chiral electromagnetic correction to the nonleptonic Delta I=3/2 amplitude in kaon decays
Kaon decay electromagnetic radiation amplitude phenomenology electromagnetic effect
2014/12/22
In kaon decay, electromagnetic radiative corrections can generate shifts in the apparent ΔI=3/2 amplitude of order αA0/A2not, vert, similar22α. In order to know the true ΔI=3/2 amplitude for compariso...
Role of resonances in nonleptonic hyperon decays
Resonance hyperon decay chiral perturbation theory lie to reduce resonance the resonance saturated
2014/12/22
We examine the importance of resonances for the nonleptonic hyperon decays in the framework of chiral perturbation theory. Lower lying resonances are included in the effective theory. Integrating out ...
Resonances in radiative hyperon decays
The resonance radiation low-lying baryon resonance decay the decay of amplitude
2014/12/22
The importance of resonances for the radiative hyperon decays is examined in the framework of chiral perturbation theory. Low lying baryon resonances are included into the effective theory and tree co...
Non-leptonic hyperon decays in chiral perturbation theory
Hyperon chiral perturbation theory the spin exchange resonance amplitude decay
2014/12/22
The non-leptonic hyperon decays are analyzed up to one-loop order including all counterterms in the framework of heavy baryon chiral perturbation theory. We use the exchange of the spin- decuplet reso...
New insights concerning dimension eight effects in weak decays
Nonleptonic decay weak hybrid d matrix elements of dimension
2014/12/22
Most past work on weak nonleptonic decays has mixed dimensional regularization in the weak operator product expansion with some form of a cutoff regularization in the evaluation of the matrix elements...
RARE CHARM DECAYS
D decay weak electricity the standard model strong power super Dave bearing
2014/12/22
This paper is a written version of a talk on rare (FCNC) D meson decays as presented at the Electroweak Moriond 2002. The presentation proceeds in two parts. We first consider Standard Model predictio...
Rare charm decays in the standard model and beyond
Quantum chromodynamics vector meson resonance sensitive
2014/12/20
We perform a comprehensive study of a number of rare charm decays, incorporating the first evaluation of the QCD corrections to the short distance contributions, as well as examining the long range ef...
Semileptonic decays of the light J(P)=1/2(+) ground state baryon octet
Lorentz covariance quark model factoring factors the parameters of the quality
2014/12/19
We calculate the semileptonic baryon octet-octet transition form factors using a manifestly Lorentz covariant quark model approach based on the factorization of the contribution of valence quarks and ...
Rare Decays in BaBar: Search for Decays of the Neutral B Meson into Two Leptons and Measurement of CP Asymmetry in Inclusive Radiative Decays of the B Meson into a Strange-quark System
BaBar Leptons Rare decays Strange-quark system
2014/11/20
Rare Decays in BaBar: Search for Decays of the Neutral B Meson into Two Leptons and Measurement of CP Asymmetry in Inclusive Radiative Decays of the B Meson into a Strange-quark System.
