Heavy baryons
نویسندگان
چکیده
منابع مشابه
Heavy Quark Distribution Functions in Heavy Baryons
Using the Bethe-Salpeter (B-S) equations for heavy baryons ΛQ, ΣQ, ΞQ and ΩQ (Q = b or c), which were established in previous work, we calculate the heavy quark distribution functions in these baryons. The numerical results indicate that these distribution functions have an obvious peak at some fraction, α0, of the baryon’s light-cone “plus” momentum component carried by the heavy quark, and th...
متن کاملHeavy Baryons and electromagnetic decays
In this talk I review the theory of electromagnetic decays of the ground state baryon multiplets with one heavy quark calculated using Heavy Hadron Chiral Perturbation Theory [1]. The M1 and E2 amplitudes for S∗ → Sγ, S∗ → Tγ and S → Tγ are separately analyzed. All M1 transitions are calculated up to O(1/Λχ). The E2 amplitudes contribute at the same order for S∗ → Sγ, while for S∗ → Tγ they fir...
متن کاملObservation of the Heavy Baryons
T. Aaltonen, A. Abulencia, J. Adelman, T. Affolder, T. Akimoto, M. G. Albrow, S. Amerio, D. Amidei, A. Anastassov, K. Anikeev, A. Annovi, J. Antos, M. Aoki, G. Apollinari, T. Arisawa, A. Artikov, W. Ashmanskas, A. Attal, A. Aurisano, F. Azfar, P. Azzi-Bacchetta, P. Azzurri, N. Bacchetta, W. Badgett, A. Barbaro-Galtieri, V. E. Barnes, B. A. Barnett, S. Baroiant, V. Bartsch, G. Bauer, P.-H. Beauc...
متن کاملElectromagnetic Decays of Heavy Baryons
The electromagnetic decays of the ground state baryon multiplets with one heavy quark are calculated using Heavy Hadron Chiral Perturbation Theory. The M1 and E2 amplitudes for S → Sγ, S → Tγ and S → Tγ are separately computed. All M1 transitions are calculated up to O(1/Λχ). The E2 amplitudes contribute at the same order for S → Sγ, while for S → Tγ they first appear at O(1/(mQΛχ)) and for S →...
متن کاملHeavy Baryons from Lattice NRQCD
Extraction of correct mass splittings between vector and pseudoscalar mesons remains a challenging problem in lattice QCD. While quenched lattice QCD has been unable to extract correct mass splittings [1], so far this problem persists even with full lattice QCD [2]. One may thus ask whether lattice results for baryon mass splittings exhibit similar suppression compared to experimental numbers. ...
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ژورنال
عنوان ژورنال: Progress in Particle and Nuclear Physics
سال: 1994
ISSN: 0146-6410
DOI: 10.1016/0146-6410(94)90053-1