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Matrix Elements of Four-quark Operators Relevant to Lifetime Difference ΔΓ_{B_s} from QCD Sum Rules
C. -S. Huang, Ailin Zhang, Shi-Lin Zhu
We extract the matrix elements of four quark operators O_{L,S} relevant to the B_s and \bar B_s life time difference from QCD sum rules. We find the vacuum saturation approximation…
coupling constant
Shi-Lin Zhu
We calculate the coupling using light cone QCD sum rule. Our result is .
Recoil Order Chiral Corrections to Baryon Octet Axial Currents
Shi-Lin Zhu, S. Puglia, M. J. Ramsey-Musolf
We calculate chiral corrections to the octet axial currents through using baryon chiral perturbation theory (BCPT). The relativistic BCPT framework allows one to su…
Octet Baryon Charge Radii, Chiral Symmetry and Decuplet Intermediate States
S. J. Puglia, M. J. Ramsey-Musolf, Shi-Lin Zhu
We compute the octet baryon charge radii to O(1/Heavy^3) in heavy baryon chiral perturbation theory. We examine the effect of including the decuplet of spin-3/2 baryons explicitly.…
Excited heavy baryon masses in HQET QCD sum rules
C. -S. Huang, Ailin Zhang, Shi-Lin Zhu
We construct the interpolating currents for the fourteen p-wave excited heavy baryons in the framework of heavy quark effective theory (HQET). At the leading order in the 1/m_Q exp…
Chiral Symmetry and the Parity-Violating Yukawa Coupling
Shi-Lin Zhu, S. J. Puglia, B. R. Holstein +1
We construct the complete SU(2) parity-violating (PV) interaction Lagrangian with one derivative, and calculate the chiral corrections to the PV Yukawa coupling con…