The BaBar experiment has discovered an unexpected new narrow state, D-sJ*(2317)(+) in the inclusive D(s)(+)pi(0) invariant mass distribution from e(+)e(-) annihilation data at energies near 10.6 GeV. The same experiment has also shown evidence for structure in the 2.46 GeVc(2) region in the D-s*(2112)(+)pi(0) mass spectrum. These discoveries have triggered a search in several experiments for new states coupled to the D-s(+) meson which have confirmed the existence of D-sJ*(2317)(+) together with D-sJ(2458)(+) --> D-s*(2112)(+)pi(0) both in inclusive e(+)e(-) annihilation and in B-decays. These two new states are difficult to explain in terms of potential models.
The discovery of two new surprising D-s states
PALANO, Antimo
2004-01-01
Abstract
The BaBar experiment has discovered an unexpected new narrow state, D-sJ*(2317)(+) in the inclusive D(s)(+)pi(0) invariant mass distribution from e(+)e(-) annihilation data at energies near 10.6 GeV. The same experiment has also shown evidence for structure in the 2.46 GeVc(2) region in the D-s*(2112)(+)pi(0) mass spectrum. These discoveries have triggered a search in several experiments for new states coupled to the D-s(+) meson which have confirmed the existence of D-sJ*(2317)(+) together with D-sJ(2458)(+) --> D-s*(2112)(+)pi(0) both in inclusive e(+)e(-) annihilation and in B-decays. These two new states are difficult to explain in terms of potential models.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
