Molecular $$\Xi _{bc}$$ states from meson–baryon interaction

Yu, Qi-Xin; Dias, J. M.; Wu, Liang; Oset, E.

doi:10.1140/epjc/s10052-019-7543-4

Cited by 20 publications

(7 citation statements)

References 113 publications

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“…Then two comments are in order: the first one is that when dealing with hadron components of composite states, it was found in Ref. [29] that the sizes are bigger than expected, and components around 1 fm are not negligible. The other comment is that one should not be so strict in associating R to a size.…”

Section: A υ(4s) Statementioning

confidence: 99%

ϒ(nl) decay into B(⁎)B¯(⁎

2020

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We have evaluated the decay modes of the Υ(4s), Υ(3d), Υ(5s), Υ(6s) states into BBsB * s using the 3 P0 model to hadronize the bb vector seed, fitting some parameters to the data. We observe that the Υ(4s) state has an abnormally large amount of meson-meson components in the wave function, while the other states are largely bb. We predict branching ratios for the different decay channels which can be contrasted with experiment for the case of the Υ(5s) state. While globally the agreement is fair, we call the attention to some disagreement that could be a warning for the existence of more elaborate components in the state.

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Section: A υ(4s) Statementioning

confidence: 99%

ϒ(nl) decay into B(⁎)B¯(⁎

2020

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“…It was extended further to the charm-bottom system and double-bottom systems in Refs. [203,204] c D( * ) were explored in Ref. [205] and it was found that a doubly-charmed state, Ξ * cc (4380), exists with almost the same mass as P c (4380).…”

Section: B Heavy Meson-baryon Molecules Vs Doubly Heavy Baryonsmentioning

confidence: 99%

A survey of heavy-heavy hadronic molecules

Dong,

Guo,

Zou

2021

Preprint

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The spectrum of hadronic molecules composed of heavy-antiheavy charmed hadrons has been obtained in our previous work. The potentials are constants at the leading order, which are estimated from resonance saturation. The experimental candidates of hadronic molecules, say X(3872), Y (4260), three Pc states and Pcs(4459), fit the spectrum well. The success in describing the pattern of heavy-antiheavy hadronic molecules stimulates us to give more predictions for the heavy-heavy cases, which are less discussed in literature than the heavy-antiheavy ones. Given that the heavyantiheavy hadronic molecules, several of which have strong experimental evidence, emerge from the dominant constant interaction from resonance saturation, we find that the existence of many heavyheavy hadronic molecules is natural. Among these predicted heavy-heavy states we highlight the DD * molecule and the D ( * ) Σ ( * ) c molecules, which are the partners of the famous X(3872) and Pc states. Quite recently, LHCb collaboration reported a doubly charmed tetraquark state, Tcc, which is in line with our results for the DD * molecule. With the first experimental signal of this new kind of exotic states, the upcoming update of the LHCb experiment as well as other experiments will provide more chances of observing the heavy-heavy hadronic molecules.

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“…Its SU (3) partners, Ξ + cc and Ω + cc , are also searched for by LHCb, but with no sign of observation yet [256][257][258]. Theoretically, an important question is to understand the mass spectrum of the doubly charm baryons and related systems, which depends on the binding energy between the two heavy quarks [259][260][261][262][263][264][265][266][267][268][269][270][271]. The success discovery of Ξ ++ cc has triggered wide theoretical work to understand the properties of baryons with more than a heavy quark .…”

Section: Doubly Heavy Hadronsmentioning

confidence: 99%

Heavy Flavour Physics and CP Violation at LHCb: a Ten-Year Review

Chen¹,

Li²,

Qian³

et al. 2021

Preprint

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Heavy flavour physics provides excellent opportunities to indirectly search for new physics at very high energy scales and to study hadron properties for deep understanding of the strong interaction. The LHCb experiment has been playing a leading role in the study of heavy flavour physics since the start of the LHC operations about ten years ago, and made a range of high-precision measurements and unexpected discoveries, which may have far-reaching implications on the field of particle physics. This review highlights a selection of the most influential physics results on CP violation, rare decays, and heavy flavour production and spectroscopy obtained by LHCb using the data collected during the first two operation periods of the LHC. The upgrade plan of LHCb and the physics prospects are also briefly discussed.

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Molecular $$\Xi _{bc}$$ states from meson–baryon interaction

Cited by 20 publications

References 113 publications

ϒ(nl) decay into B(⁎)B¯(⁎

ϒ(nl) decay into B(⁎)B¯(⁎

A survey of heavy-heavy hadronic molecules

Heavy Flavour Physics and CP Violation at LHCb: a Ten-Year Review

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