TY  - JOUR
AU  - Yao, D. L.
PY  - 2018
DA  - 2018//
TI  - Masses and sigma terms of doubly charmed baryons up to O(p(4)) in manifestly Lorentz-invariant baryon chiral perturbation theory
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 034012
EP  - 12pp
VL  - 97
IS  - 3
PB  - Amer Physical Soc
AB  - We calculate the masses and sigma terms of the doubly charmed baryons up to next-to-next-to-next-toleading order [i.e., O(p(4))] in a covariant baryon chiral perturbation theory by using the extended-on-mass-shell renormalization scheme. Their expressions both in infinite and finite volumes are provided for chiral extrapolation in lattice QCD. As a first application, our chiral results of the masses are confronted with the existing lattice QCD data in the presence of finite-volume corrections. Up to O(p(3)), all relevant low-energy constants can be well determined. As a consequence, we obtain the physical values for the masses of Xi(cc) and Omega(cc) baryons by extrapolating to the physical limit. Our determination of the Xi(cc) mass is consistent with the recent experimental value by LHCb Collaboration, however, larger than the one by SELEX Collaboration. In addition, we predict the pion-baryon and strangeness-baryon sigma terms, as well as the mass splitting between the Xi(cc) and Omega(cc) states. Their quark mass dependences are also discussed. The numerical procedure can be applied to the chiral results of O(p(4)) order, where more unknown constants are involved, when more data are available for unphysical pion masses.
SN  - 2470-0010
UR  - http://arxiv.org/abs/1801.09462
UR  - https://doi.org/10.1103/PhysRevD.97.034012
DO  - 10.1103/PhysRevD.97.034012
LA  - English
N1  - WOS:000424747400004
ID  - Yao2018
ER  -