Charmed-strange mesons revisited: Mass spectra and strong decays

Abstract

Inspired by the present experimental status of charmed-strange mesons, we perform a systematic study of the charmed-strange meson family in which we calculate the mass spectra of the charmed-strange meson family by taking a screening effect into account in the Godfrey-Isgur model and investigate the corresponding strong decays via the quark pair creation model. These phenomenological analyses of charmed-strange mesons not only shed light on the features of the observed charmed-strange states, but also provide important information on future experimental search for the missing higher radial and orbital excitations in the charmed-strange meson family, which will be a valuable task in LHCb, the forthcoming Belle H, and PANDA. SONG et al. PHYSICAL REVIEW D 91, 054031 (2015)TABLE I. Experimental information of the observed charmed-strange states. State Mass (MeV) [1] Width (MeV) [1] First observation Observed decay modes D, 1968.49 ±0.33 o ; 2112.3 ±0.5 <1.9 D*A 2317) 2317.8 ± 0.6 <3.8 BABAR [3] D+/r° [3] 0,1(2460) 2459.6 ± 0.6 <3.5 CLEO [4] D*+n° [4] 0,1 (2536) 2535.12 ±0.13 0.92 ± 0.05 ITEP, SERP [23] D*+r P3] 0 : 2(2573) 2571.9 ±0.8 16+| ± 3 [24] CLEO [24] D°K+ [24] DtA2632)" 2632.5 ± 1.7 ± 5 .0 [25] < 17 [25] SELEX [25] D°K+ [25] 0*1 (2700) 2688 ± 4 ± 3 [26] 112 ± 7 ± 3 6 [26] BABAR [26] DK [26] 2708 ± 9+1(( [27] 108 ± 23+|f [27] Belle [27] D°K+ [27] 2710 ± 2f)2 [28] 149 ± 7+52 t28] BABAR [28] D^K [28] 2709.2 ± 1.9 ± 4.5 [29] 115.8 ± 7.3 ± 12.1 [29] LHCb [29] DK [29] O[./(2860) 2856.6 ± 1.5 ± 5 .0 [26] 47 ± 7 ± 10 [26] BABAR [26] DK [26] 2862 ± 2±f [28] 48 ± 3 ± 6 [28] BABAR [28] D^K [28] 2866.1 ± 1.0 ±6.3 [29] 69.9 ± 3.2 ± 6.6 [29] LHCb [29] DK [29] 0 ; 3(2860) 2860.5 ± 2.6 ± 2.5 ± 6.0 [30,31] 53 ± 7 ± 4 ± 6 [30,31] LHCb [30,31] D°K~ [30,31] OJi (2860) 2859 ± 12 ± 6 ± 23 [30,31] 159 ± 2 3 ± 2 7 ± 7 2 [30,31] LHCb [30,31] D°K-[30,31] 0.5/(3040) 3044 ± 8l5 30 [28] 239 ± 3 5^2 6 [28]

Prediction for 5++ mesons

“…For higher excitation states, the screen effect is considered to be very important by the authors of Ref. [11] . It could be introduced by the transformation br…”

“…In this work, we calculate the mass spectra of the 5 ++ meson family by using the unquenched Godfrey-Isgur(GI) model [11,12], which contains the screening effect. According to the former studies [8,[11][12][13][14][15][16][17], the GI model was tested by different systems, which shows that the GI model works well for describing hadron spectroscopy. In this work, we continue to apply this model to explore high spin states, especially estimate the mass spectrum of high spin mesons.…”

Production of P -wave charmed and charmed-strange mesons in pion and kaon induced reactions

“…In Refs. [17][18][19], the mass discrepancies were interpreted as the coupled-channel effect and the relativistic quark model with fine tuning parameters could reproduce the masses of D * s0 (2317) and D s1 (2460) [20]. The decay behaviors investigating the charmed-strange meson scenario also indicates that the observed properties of D * s0 (2317) and D s1 (2460) could be understood [21][22][23][24][25][26][27].…”

Strong decays of DJ(3000) and DsJ(3040)<

“…Liu et al also used a modified G-I model to calculate these strong decays, and they gave the results of 285.83 MeV and 131.28 MeV for the 2Pð1 þ 0 Þ and 2Pð1 þ Þ states [50]. In Ref.…”