Abstract
We study the influence of the D * s 0 (2317) + resonance in the decay B c → J/ψKD . In this process, we consider that the B c meson decays first into J/ψ and the quark pair cs , and then the quark pair hadronizes into DK or D s η components. The final state interaction, generating the D * s 0 (2317) + resonance, is described by the chiral heavy meson unitary approach. With the parameters chosen in order to match the pole position of the D * s 0 (2317) + , we obtain the DK invariant mass distribution of the decay B c → J/ψDK , and also the rate for B c → J/ψD * s 0 (2317). We predict the ratio of these two magnitudes. This decay mechanism has not been measured yet, and it would provide insight about the nature of this resonance.
Highlights
In this talk we show the results given in Ref. [1] where the role of the unmeasured decay Bc →J/ΨKD in details can btheefomuonldeciunltahrisnawtuorrek.oTf htheescDa∗sl0a(r2r3e1so7n)+anrceesoDna∗s0n(c2e31w7a)s+discussed
The A constant in Eq (5) is chosen in a way that the invariant mass distribution is normalized in the energy range of the plot
The phase space is normalized in the same energy range
Summary
In this talk we show the results given in Ref. [1] where the role of the unmeasured decay Bc →J/ΨKD in details can btheefomuonldeciunltahrisnawtuorrek.oTf htheescDa∗sl0a(r2r3e1so7n)+anrceesoDna∗s0n(c2e31w7a)s+discussed. Since the mass of the D∗s0(2317)+ is close to the threshold of the DK system, being the difference of about 50 MeV, the molecular state interpretation seems natural. We shall give the DK invariant mass distribution in the decay Bc → J/ψDK, from which information on the internal structure of the D∗s0(2317)+ state will be obtained.
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