Spectroscopy behavior of fully heavy tetraquarks

Abstract

In 2020, the LHCb collaboration reported a fully charmed tetraquark state X(6900) in the invariant mass spectrum of J/ψ pairs. This discovery inspires us to further study the properties of the fully heavy tetraquark system. In this work, we study systemically all possible configurations for the ground fully heavy tetraquark states in constituent quark model. According to our calculations, we analyze their binding energies, internal mass contributions, relative lengths between (anti)quarks, and the spatial distribution of four valence (anti)quarks. We find no stable S-wave state exist in fully heavy tetraquark system. We hope that our study will be helpful to explore further for fully heavy tetraquark states.

Heavy Baryon Spectroscopy in the Relativistic Quark Model

“…[41,42] are in full agreement with our results for the cb cb tetraquark; • Predictions of Refs. [60,90] give good agreement for the cb cb and bb bb tetraquarks, but do not agree at all for the cc c c tetraquark; • Predictions of Refs. [35,45,63,74,95] give partial agreement for the cc c c and bb bb tetraquarks in the diquark-antidiquark picture; • Predictions of Refs.…”

“…[57] 7016 6899 6956 [43] 6140 [58], [59] 5969 6021 6115 [60] 6487 6500 6524 [61] 5970 ± 40 [62] 6050 ± 80 [63] 6425 (Id); 6483 (IId) 6425 (Id); 6450 (IId) 6432 (Id); 6479 (IId) [64] 5883 6120 6246 [65] 6192 ± 25 6429 ± 25 [87] 5978 6155 [88] 6200 ± 100 6240 ± 100 6270 ± 90 [89] 7035, 7202 7050, 7274 7069, 7281 [90] 6384 6452 [91] 6035 6137…”

“…in the diquark-antidiquark picture: [35,40,45,60,69,90,95] (all predictions); [63] (ground states only); [66] (2S); [74] (2S, 3S). -in other models: [35,37,38,68] (all predictions); [39] (ground states only); [70]…”

“…Various quark models:[34][35][36][40][41][42][43][44][45][46][47][48][49][50][51][52][53][57][58][59][60][61][63][64][65][66][67][68][69][70]72,74,75,[77][78][79][80][81][82][84][85][86][87][89][90][91][92]95,96,[98][99][100]. • QCD sum rules: [37-39,54-56,62,71,73,76,83,88,94,97].…”

Fully Heavy Tetraquark Spectroscopy in the Relativistic Quark Model

“…Our 6190 6271 6367 [52] 6200 [39] 6276 [74] 6351 6441 6471 [75] 6476 6441 6475 [93] 6200 ± 100 6240 ± 100 6270 ± 90 [94] 7035, 7202 7050, 7274 7069, 7281 [95] 6384 6452 6483 [96] 6035 6137 6194…”