D-wave charmed and bottomed baryons from QCD sum rules - INSPIRE

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D-wave charmed and bottomed baryons from QCD sum rules

Hua-Xing Chen
(
- Beihang U.
)
,
Qiang Mao
(
- Beihang U. and
- Suzhou, Soochow U.
)
,
Atsushi Hosaka
(
- J-PARC and
- Osaka U., Res. Ctr. Nucl. Phys.
)
,
Xiang Liu
(
- Lanzhou U. and
- Lanzhou, Inst. Modern Phys.
)
,
Shi-Lin Zhu
(
- CICQM, Beijing and
- Peking U., CHEP and
- Peking U., SKLNPT
)

Nov 8, 2016

20 pages

Published in:

Phys.Rev.D 94 (2016) 11, 114016

Published: Dec 19, 2016

e-Print:

1611.02677 [hep-ph]

DOI:

10.1103/PhysRevD.94.114016

View in:

ADS Abstract Service

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Abstract: (APS)

We study the D-wave charmed baryons of SU(3) flavor 3¯F using the method of QCD sum rules in the framework of heavy quark effective theory. We find that the Λc(2880), Ξc(3055), and Ξc(3080) can be well described by the D-wave SU(3) 3¯F charmed baryon multiplets of JP=3/2+ and 5/2+, which contain two λ-mode orbital excitations; i.e., the Λc(2880) has JP=5/2+, and the Ξc(3055) and Ξc(3080) have JP=3/2+ and 5/2+, respectively. Our results also suggest that the Λc(2880) has a partner state, the Λc(3/2+) of JP=3/2+. Its mass is around 2.81-0.18+0.33 GeV, and the mass difference between it and the Λc(2880) is 28-24+45 MeV. We also evaluate the masses of their bottom partners.

Note:

22 pages, 11 figures, 2 tables. accepted by PRD

quantum chromodynamics: sum rule
charmed baryon: multiplet
baryon: flavor
symmetry: SU(3)
Heavy Quark Effective Theory
baryon: excited state
numerical calculations

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Figures(21)

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