Isgur-Wise function in the small velocity limit
نویسندگان
چکیده
منابع مشابه
Λceνe Isgur-Wise Function
The six independent formfactors describing the weak decay Λb → Λceνe are determined in terms of one universal function when both the b and c quarks are treated as heavy. The relations between these formfactors are modified by terms suppressed by inverse powers of the charm quark mass. We compute the formally leading long-distance corrections to these relations in chiral perturbation theory both...
متن کاملThe Isgur-Wise function from the lattice.
We calculate the Isgur-Wise function by measuring the elastic scattering amplitude of a D meson in the quenched approximation on a 24 3 48 lattice at = 6:2, using an O(a)-improved fermion action. We use this result, in conjunction with heavy-quark symmetry, to extract jV cb j from the experimentally measured B ! D l diierential decay width. Heavy-quark symmetry enables all the non-pertur-bative...
متن کاملIsgur-wise Function in Relativistic Quark Model
Hadronic matrix elements are expressed in the framework of BS formalism, and in the limit of heavy quark mass mQ → ∞, we find that all form factors in processes of B → D weak transition can be incorporated into a single universal Isgur-Wise (I −W ) function ξ(v · v′), which was first discovered by Isgur and Wise in heavy quark effective theory (HQET). By introducing a phenomenological interacti...
متن کاملIsgur-Wise Function on the Lattice
A very active subfield in high energy physics recently is the study of hadrons with heavy-light quark content [1]. A major effort has been spent in calculating the Isgur-Wise function, which, once it is determined, can be widely used in calculations of heavy meson decay (b → c) processes. After an initial exploration [2], calculations of the Isgur-Wise function on the lattice [3– 5] have quickl...
متن کاملIsgur-Wise function for Lb ̃Lc in the BS approach
In the heavy quark limit, the heavy baryon LQ (Q5b or c) can be regarded as composed of a heavy quark and a scalar light diquark which has good spin and flavor quantum numbers. Based on this picture we establish the Bethe-Salpeter ~BS! equation for LQ in the leading order of 1/mQ expansion. With the kernel containing both the scalar confinement and one-gluon-exchange terms we solve the BS equat...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review D
سال: 1993
ISSN: 0556-2821
DOI: 10.1103/physrevd.47.2949