Strong decay of $$\Lambda _c(2940)$$ Λ c ( 2940 ) as a 2P state in the

Abstract

Considering the mass, parity and D 0 p decay mode, we tentatively assign the c (2940) as the P−wave states with one radial excitation. Then, via studying the strong decay behavior of the c (2940) within the 3 P 0 model, we obtain that the total decay widths of the c1 (

Canonical interpretation of the newly observed Λb(6146)0 and ΛbWei1, Lü2, Zhong3 2019Phys. Rev. DSelf Cite356441View full textAdd to dashboardCite

“…State [7,41]. With these parameters, the calculated decay widths of the ground states Σ b and Σ Ã b to Λ b π are shown in Table II, which agree with the experimental data well.…”

“…In this calculation, the 3 P 0 quark pair creation model is adopted to investigate the Okubo-Zweig-Iizuka-allowed two-body strong decays of the excited Λ b and Σ b states. The 3 P 0 model has been widely employed to estimate the strong decay behaviors of conventional hadrons and achieved with considerable successes [24][25][26][27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42]. In this model, the initial hadrons can decay into two final states via a quark-antiquark pair with the vacuum quantum number J PC ¼ 0 þþ [24].…”

“…where the m Q and m q are the heavy and light quark masses, respectively [41,44]. The n ρ and L ρ stand for the radial and orbital angular momenta between the two light quarks, respectively, while n λ and L λ denote the radial and angular momenta between the two light quark system and the bottom quark, respectively.…”

Strong decays of observed Λc baryons in the P03Guo1, Yang2, Zhang3 2019Phys. Rev. D383270View full textAdd to dashboardCite

“…High excited assignments such as the 2P-wave [62] or 2D-wave charmed baryons have not been examined for these Λ c states, and relevant calculation and analyses have not been performed using the 3 P 0 model. Other higher excitation assignments for these Λ c states may be possible.…”

Strong decays of the higher excited ΛQ and ΣQ baryons

“…Although the Λ c ð2860Þ and Λ c ð2880Þ lie above the DN threshold, their partial widths decaying into the DN channel are small for the limited phase space. The Λ c ð2940Þ resonance may favor the λ-mode J P ¼ 3=2 − Λ c ð2PÞ state in the conventional quark model [1,9,10,48], which is the only higher excited Λ c state in the N ¼ 3 shell. Unlike Λ c ð2860Þ and Λ c ð2880Þ, the Λ c ð2940Þ has large partial decay width of DN decay mode [48].…”