Subjects: Physics >> General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. submitted time 2017-09-17
Abstract： We analyze various possible interpretations of the narrow state D+sJ (2632) observed by SELEX Collaboration recently, which lies above threshold and has abnormal decay pattern. These inter-pretations include: (1) several versions of tetraquarks; (2) conventional c痵 meson such as the first radial excitation of Ds(2112) with abnormally large SU(3) symmetry breaking; (3) conventional c痵 meson with abnormally large #17;1 coupling; (4) heavy hybrid meson. We discuss the physical impli- cations of each interpretation. For example, if the existence of D+sJ (2632) is confirmed as the first radial excitation of Ds(2112) by other experiments, it will be helpful to look for (1) its SU(3) flavor partners D0,+J (2530); (2) its B-meson analogues B0,+J (5840),B+sJ (5940); (3) S-wave two pion decaymodes.
Peer Review Status:
Awaiting Review
Subjects: Physics >> General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. submitted time 2017-09-17
Abstract： Within the framework of the heavy quark effective theory, QCD sum rules are used to calculate the masses of p-wave 痗s states. The results for 0+ and 1+ states with the angular momentum of the light component jl = 1/2 are consistent with the experimental values for Ds(2317) and Ds(2457),respectively.
Peer Review Status:Awaiting Review
Subjects: Physics >> General Physics: Statistical and Quantum Mechanics, Quantum Information, etc. submitted time 2017-09-17
Abstract： In the framework of heavy quark effective theory we use QCD sum rules to calculate the masses of the 痗s (0+, 1+) and (1+, 2+) excited states. The results are consistent with that the states DsJ (2317) and DsJ (2460) observed by BABAR and CLEO are the 0+ and 1+ states in the jl = 12 + doublet.
Peer Review Status:Awaiting Review
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