Strong decays of $$D_{3}^{*}(2760)$$ D 3 ∗ ( 2760 ) , $$D_{s3}^{*}(2860)$$ D s 3 ∗ ( 2860 ) , $$B_{3}^{*}$$ B 3 ∗ , and $$B_{s3}^{*}$$ B s 3 ∗

Wang, Tianhong; Wang, Zhi‐Hui; Jiang, Yue; Jiang, L.; Wang, Guoli

doi:10.1140/epjc/s10052-017-4611-5

Cited by 19 publications

(20 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…By solving the corresponding Salpeter wave functions, we could naturally obtain the mixing angle of the 1 + heavy-light mesons. This work is studied within the framework of the instantaneous Bethe-Salpeter (BS) methods [27,28], which have been widely used and have achieved good performance in the strong decays of heavy mesons [29][30][31], hadronic transition [32][33][34], decay constants calculations, and annihilation rates [35][36][37]. This manuscript is organized as follows.…”

Section: Resonances Mass Expmentioning

confidence: 99%

Mixing angle and decay constants of JP=1+ heavy-light mesons

Wang

Jiang

et al. 2019

Phys. Rev. D

Self Cite

View full text Add to dashboard Cite

The mass spectra, mixing angle and decay constants of the J P = 1 + heavy-light mesons are systematically studied within the framework of the Bethe-Salpeter equation (BSE). The full 1 + Salpeter wave function is given for the first time. The mixing between the 1 +− and 1 ++ in the 1 + heavylight systems are automatically determined by the dynamics in the equation without any man-made mixing. The results indicate that in a rigorous study there exists the phenomenon of mixing angle inversion or mass inversion within 1 + heavy-light doublet, which is sensitive to the s-quark mass for the charmed mesons and u-or d-quark masses for the bottomed mesons. This inversion phenomenon can answer the question of why we have confused mixing angles in the literature and partly explain the lower mass of D s1 (2460) compared to that of D s1 (2536). The decay constants are also presented and can behave as a good quantity to distinguish the 1 + doublet in heavy-light mesons. This study indicates that the light-quark mass may play an important role in deciding the mass order, mixing angle, and decay constant relation between the |j l = 3 2 and |j l = 1 2 heavy-light mesons. I. IntroductionGenerally, all the physical mesons have definite J P spin parity or J P C for quarkonia. The spin S and orbital angular momentum L are no longer the good quantum numbers in the relativistic situations, and usually the physical states are not located in the definite 2S+1 L J states. These situations become obvious in the 1 + and 1 − mesons; for the 1 − states, the 2 3 S 1 -1 3 D 1 mixing is needed to fit the experimental measurements for both quarknia [1, 2] and heavy-light mesons [3-9], while for the 1 + states, we always have to make the 1 P 1 -3 P 1 mixing fit the physical states [10][11][12]. So, to describe the bound states more effectively and appropriately, one should focus on the J P (C) , which are always the good quantum numbers. In the previous literature, the unnatural parity 1 + heavy-light mesons were usually studied by two methods, one is the heavy quark effective theory (HQET) [11,12], and another makes a man-made mixing between the 1 P 1 and 3 P 1 states. For the former one, which works in the approximation m Q → +∞, and it does not hold well when the light-quark mass is comparable with the heavy quark, such as in the (cs) and (bc) systems. While for the latter one, the mixing angle is always difficult to decide and usually treated as a free parameter. Neither of the two methods to deal with the unnatural parity states is satisfactory.On the other hand, the mass relation between the two 1 + states is also a problem. The mass of the broad state D 1 (2430) is little heavier than that of the narrow state D 1 (2420), while compared with the narrow state D s1 (2536), the broad state D s1 (2460) has a much lower mass. In the relativized Godfrey-Isgur (GI) model [13], the masses of the 1 + (cs) doublet are predicted to be 2.55 and 2.56 GeV [12,14], which correspond to the experimental D s1 (2535) and D s1 (2460) respectively in the * Corre...

show abstract

Section: Resonances Mass Expmentioning

confidence: 99%

Mixing angle and decay constants of JP=1+ heavy-light mesons

Wang

Jiang

et al. 2019

Phys. Rev. D

Self Cite

View full text Add to dashboard Cite

show abstract

“…where ϕ ++ P denotes the positive energy component of the instantaneous BS wave function of the initial state; ϕ ++ P f ≡ γ 0 ϕ ++ P f γ 0 is the Dirac conjugate of the positive energy component of the final state; m 1 and m 2 are the masses of quark and antiquark in the final state, respectively, and q = q − m 1 m 1 +m 2 P f is the relative momentum between them. In this paper, we keep only the positive energy component ϕ ++ of the relativistic wave functions, because the contributions from other components are much smaller than 1% in transition of B c → (cc) [36].…”

Section: Form Factors and Semileptonic Decay Widthmentioning

confidence: 99%

Relativistic effects in the semileptonic Bc decays to charmonium with the Bethe-Salpeter method

et al. 2019

Self Cite

View full text Add to dashboard Cite

Relativistic effects are important in the rigorous study of heavy quarks. In this paper, we study the relativistic corrections of semileptonic B c decays to charmonium with the instantaneous Bethe-Salpeter method. Within the Bethe-Salpeter framework, we use two methods to study the relativistic effects. One of them is to expand the transition amplitude in powers of q which is the relative momentum between the quark and antiquark, and the other is to expand the amplitude base on the wave functions. In the level of decay width, the results show that, for the transition of B c → η c , the relativistic correction is about 22%; for B c → J/ψ, it is about 19%; the relativistic effects of 1P final states are about 14 ∼ 46% larger than those of 1S final states; for 2S final states, they are about 19 ∼ 28% larger than those of 1S final states; for 3S final states, they are about 12 ∼ 13% larger than those of 2S final states; for 2P final states, they are about 10 ∼ 14% larger than those of 1P final states; for 3P final states, they are about 7 ∼ 12% larger than those of 2P final states. We conclude that the relativistic corrections of the B c decays to the orbitally or radially excited charmonium (2S, 3S, 1P, 2P, 3P) are quite large.

show abstract

“…[ 24–29 ] The catalyst coatings can increase the number of ORR active sites and protect LSCF from reacting with contaminates. [ 20,30–33 ] Several types of catalysts have been developed, including precious metals (e.g., Pd, Ag, and Ru), oxygen ion‐conducting oxides (Sm 0.2 Ce 0.8 O 2− δ [SDC], [ 34 ] and Gd 0.2 Ce 0.8 O 1.9 (GDC)), [ 33,35 ] mixed ionic and electronic conductors (e.g., LSCF, [ 36 ] Sm 0.5 Sr 0.5 CoO 3− δ (SSC), [ 36 ] and PrSrCoMnO 6− δ , [ 25 ] etc. ), and Ba‐containing compounds (BaO, [ 26 ] and BaCO 3 [ 37 ] ).…”

Section: Introductionmentioning

confidence: 99%

Enhancing Oxygen Reduction Activity and Cr Tolerance of Solid Oxide Fuel Cell Cathodes by a Multiphase Catalyst Coating

Niu

Zhou

et al. 2021

Adv Funct Materials

View full text Add to dashboard Cite

Intermediate temperature solid oxide fuel cells (IT‐SOFCs) are cost‐effective and efficient energy conversion systems. The sluggish oxygen reduction reaction (ORR) and the degradation of cathodes are critical challenges to the commercialization of IT‐SOFCs. Here, a highly efficient multiphase (MP) catalyst coating, consisting of Ba1−xCo0.7Fe0.2Nb0.1O3−δ (BCFN) and BaCO3, to enhance the ORR activity and durability of the state‐of‐the‐art lanthanum strontium cobalt ferrite (La0.6Sr0.4Co0.2Fe0.8O3−δ, LSCF) cathode is reported. The conformal MP catalyst‐coated LSCF cathode shows a polarization resistance (Rp) of 0.048 Ω cm2 at 650 °C, about one order of magnitude smaller than that of the bare LSCF. In an accelerated Cr‐poisoning test, the degradation rate of the catalyst‐coated LSCF electrode is 10−3 Ω cm2 h−1 (0.59% h−1) over 200 h, only one fifth of the degradation rate of the bare LSCF electrode at 750 °C. In addition, anode‐supported single cells with the MP catalyst‐coated LSCF cathode show a dramatically enhanced peak power density (1.4 W cm−2 vs 0.67 W cm−2 at 750 °C) and increased durability against Cr and H2O. Both experimental results and density functional theory‐based calculations indicate that the BCFN phase improves the ORR activity while the BaCO3 phase enhances the stability of the LSCF cathode.

show abstract

Strong decays of $$D_{3}^{}(2760)$$ D 3 ∗ ( 2760 ) , $$D_{s3}^{}(2860)$$ D s 3 ∗ ( 2860 ) , $$B_{3}^{}$$ B 3 ∗ , and $$B_{s3}^{}$$ B s 3 ∗

Cited by 19 publications

References 54 publications

Mixing angle and decay constants of JP=1+ heavy-light mesons

Mixing angle and decay constants of JP=1+ heavy-light mesons

Relativistic effects in the semileptonic Bc decays to charmonium with the Bethe-Salpeter method

Enhancing Oxygen Reduction Activity and Cr Tolerance of Solid Oxide Fuel Cell Cathodes by a Multiphase Catalyst Coating

Contact Info

Product

Resources

About