TY  - JOUR
AU  - Wang, G. Y.
AU  - Roca, L.
AU  - Oset, E.
PY  - 2019
DA  - 2019//
TI  - Discerning the two K-1 (1270) poles in D-0 -> pi(+) VP decay
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 074018
EP  - 10pp
VL  - 100
IS  - 7
PB  - Amer Physical Soc
AB  - Within the chiral unitary approach, the axial-vector resonance K-1 (1270) has been predicted to manifest a two-pole nature. The lowest pole has a mass of 1195 MeV and a width of 246 MeV and couples mostly to K*pi, and the highest pole has a mass of 1284 MeV and a width of 146 MeV and couples mostly to rho K. We analyze theoretically how this double-pole structure can show up in D-0 -> pi+VP decays by looking at the vector-pseudoscalar (VP) invariant mass distribution for different VP channels, exploiting the fact that each pole couples differently to different VP pairs. We find that the final (K) over bar*pi and rho(K) over tilde channels are sensible to the different poles of the K-1 (1270) resonance and hence are suitable reactions to analyze experimentally the double-pole nature of this resonance.
SN  - 2470-0010
UR  - https://arxiv.org/abs/1907.09188
UR  - https://doi.org/10.1103/PhysRevD.100.074018
DO  - 10.1103/PhysRevD.100.074018
LA  - English
N1  - WOS:000490752100003
ID  - Wang_etal2019
ER  -