D-wave heavy-light mesons from QCD sum rules

Abstract

We study the D-wavecs heavy meson doublets ð1 − ; 2 − Þ and ð2 − ; 3 − Þ using the method of QCD sum rule in the framework of heavy quark effective theory. Choosing the same threshold values ω c around 2.7 Gev, we calculate the masses of the 1 − and 3 − states. They are m D Ã s1 ¼ 2.81 AE 0.10 GeV and m D Ã s3 ¼ 2.85AE 0.08 GeV, consistent with the newly observed D Ã s1 ð2860Þ and D Ã s3 ð2860Þ states by LHCb. The masses of their 2 − partners are calculated to be 2.82 AE 0.10 and 2.81 AE 0.08 GeV. The mass splittings within the same doublet are calculated to be m D s2 − m D Ã s1 ¼ 0.016 AE 0.007 GeV and m D Ã s3 − m D 0 s2 ¼ 0.039AE 0.014 GeV.

$$D_{sJ}(2860)$$ D s J ( 2860 ) from the semileptonic decays of $$B_s$$ B s mesons

“…First, we specify the input parameters in our calculation. = 2810 MeV [6], M D s2 = 2820 MeV [6], and…”

“…The LHCb Collaboration also announced that this was the first observation of a heavy flavored spin-3 resonance and the first time that any spin-3 particle had been seen to be produced in B decays [1]. Although D s J (2860) had been reported a e-mail: lfgan@nudt.edu.cn before by the BaBar Collaboration [3,4], it has inspired a lot of new interest in studying the spectroscopy ofcs mesons and the relevant processes [5][6][7][8][9].…”

The hidden-charm pentaquark and tetraquark states

“…[299,300,301,302,49]. It can also be applied in the framework of heavy quark effective theory [303,304,305] to study heavy mesons [306,307,308,309,310,311,312,313,314,315,316,317] and heavy baryons [318,319,320,321,322,323,324,325,326,327,328,329].…”

Decay properties of P -wave charmed baryons from light-cone QCD sum rules

“…More studies on heavy mesons and baryons using this scheme can be found in Refs. [61][62][63][64][65][66][67][68][69][70][71][72][73][74][75][76][77][78][79][80], and others using the method of QCD sum rules but not in HQET can be found in Refs. [81][82][83][84][85].…”