Molecular tetraquarks and pentaquarks in chiral effective field theory
نویسندگان
چکیده
We studied the DD¯⁎/D¯D⁎, D⁎D¯⁎, D¯sD⁎/D¯s⁎D, BB¯⁎/B¯B⁎ and B⁎B¯⁎ di-hadron interactions in chiral effective field theory (χEFT) up to next-to-leading (NLO) order. The above-threshold tetraquark states Zc(3900), Zc(4020), Zcs(3985), Zb(10610), Zb(10650) can be explained as corresponding resonances, respectively. also Σc(⁎)D¯(⁎) investigate three hidden-charm pentaquarks Pc(4312), Pc(4440) Pc(4457). further used parameters fixed from Pc predict possible molecular ΞcD¯(⁎), Ξc′D¯(⁎) Ξc⁎D¯(⁎) systems. Our predictions of ΞcD¯(⁎) bound are very consistent with two new near-threshold structures recently observed by LHCb Collaboration.
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ژورنال
عنوان ژورنال: Nuclear and Particle Physics Proceedings
سال: 2023
ISSN: ['2405-6022', '2405-6014']
DOI: https://doi.org/10.1016/j.nuclphysbps.2023.01.010