Fitxers
Tipus de document
ArticleVersió
Versió acceptadaData de publicació
Tots els drets reservats
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/143340
Triangle singularities in B−→K−π−D+s0 and B−→K−π−D+s1
Títol de la revista
Director/Tutor
ISSN de la revista
Títol del volum
Recurs relacionat
Resum
We study the appearance of structures in the decay of the B− into K−π−D+s0(2317) and K−π−D+s1(2460) final states by forming invariant mass distributions of π−D+s0 and π−D+s1 pairs, respectively. The structure in the distribution is associated to the kinematical triangle singularity that appears when the B−→K−K∗0D0 ( B−→K−K∗0D∗0 ) decay process is followed by the decay of the K∗0 into π−K+ and the subsequent rescattering of the K+D0 ( K+D∗0 ) pair forming the D+s0(2317) ( D+s1(2460) resonance. We find this type of non-resonant peaks at 2850MeV in the invariant mass of π−Ds0 pairs from B−→K−π−D+s0(2317) decays and around 3000MeV in the invariant mass of π−D+s1 pairs from B−→K−π−D+s1(2460) decays. By employing the measured branching ratios of the B−→K−K∗0D0 and B−→K−K∗0D∗0 decays, we predict the branching ratios for the processes B− into K−π−D+s0(2317) and K−π−D+s1(2460) , in the vicinity of the triangle singularity peak, to be about 8×10−6 and 1×10−6 , respectively. The observation of this reaction would also give extra support to the molecular picture of the D+s0(2317) and D+s1(2460) .
Matèries
Matèries (anglès)
Citació
Citació
SAKAI, S., OSET BAGUENA, Eulogio and RAMOS GÓMEZ, Àngels. Triangle singularities in B−→K−π−D+s0 and B−→K−π−D+s1. European Physical Journal A. 2018. Vol. 54, num. 10. ISSN 1434-6001. [consulted: 11 of August of 2026]. Available at: https://hdl.handle.net/2445/143340