TY  - JOUR
AU  - Wang, G. Y.
AU  - Roca, L.
AU  - Wang, E.
AU  - Liang, W. H.
AU  - Oset, E.
PY  - 2020
DA  - 2020//
TI  - Signatures of the two K1(1270) poles in D – plus ve plus V P decay
T2  - Eur. Phys. J. C
JO  - European Physical Journal C
SP  - 388
EP  - 7pp
VL  - 80
IS  - 5
PB  - Springer
AB  - We analyze theoretically the D+ ye+ pK and D+ pe+ K*7 decays to see the feasibility to check the double pole nature of the axial -vector resonance Kt(1270) predicted by the unitary extensions of chiral perturbation theory (UChPT). Indeed, within UChPT the K1(1270) is dynamically generated from the interaction of a vector and a pseudoscalar meson, and two poles are obtained for the quantum numbers of this resonance. The lower mass pole couples dominantly to 10 and the higher mass pole to pK, therefore we can expect that different reactions weighing differently these channels in the production mechanisms enhance one or the other pole. We show that the different final V P channels in D pe+ V P weigh differently both poles, and this is reflected in the shape of the final vector-pseudoscalar invariant mass distributions. Therefore, we conclude that these decays are suitable to distinguish experimentally the predicted double pole of the Kt(1270) resonance.
SN  - 1434-6044
UR  - https://arxiv.org/abs/2002.07610
UR  - https://doi.org/10.1140/epjc/s10052-020-7939-1
DO  - 10.1140/epjc/s10052-020-7939-1
LA  - English
N1  - WOS:000536131900008
ID  - Wang_etal2020
ER  -