Pentaquark states at LHCb

Jun 5, 2018, 4:00 PM
1h 30m
Library, Centro San Domenico

Library, Centro San Domenico

theoretical Posters session

Speaker

Alessandro Giachino (INFN)

Description

The LHCb collaboration has recently reported evidence of two pentaquark states [1]. We have constructed a classification scheme for pentaquark states and tried to describe them as compact objects [2]. The hidden-charm pentaquark states have been also described as meson-baryon molecules with coupled channels for D¯(∗)Λc
and D¯(∗)Σ(∗)c [3] and recently, for the first time, we have discussed the interplay between compact and molecular components [4]. Important predictions are also given for bottom meson-baryon molecules coupled with five-quark states [3].

[1] R. Aaij et al. [LHCb Collaboration], Phys. Rev. Lett. 115
(2015) 072001;
[2]Santopinto, Giachino, Phys.Rev. D96 (2017) no.1, 014014;
[3]Yasuhiro Yamaguchi, Elena Santopinto, Phys.Rev. D96 (2017) no.1, 014018;
[4]Yasuhiro Yamaguchi, Alessandro Giachino, Atsushi Hosaka, Elena Santopinto, Sachiko Takeuchi, Makoto Takizawa, Phys. Rev. D96 (2017) no. 11, 114031.

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