Based on 122×106Υ(3S) events collected with the BABAR detector, we have observed the Υ(13DJ) bottomonium state through the Υ(3S)→γγΥ(13DJ)→γγπ+π−Υ(1S) decay chain. The significance for the J=2 member of the Υ(13DJ) triplet is 5.8 standard deviations including systematic uncertainties. The mass of the J=2 state is determined to be 10 164.5±0.8(stat)±0.5(syst)  MeV/c2. We use the π+π− invariant mass distribution to confirm the consistency of the observed state with the orbital angular momentum assignment of the Υ(13DJ).

Sanchez, P.d.A., Lees, J.P., Poireau, V., Prencipe, E., Tisserand, V., Tico, J.G., et al. (2010). Observation of the Y(1(3)D(J)) bottomonium state through decays to pi(+)pi(-)Y(1S). PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 82(11), 1-7 [10.1103/PhysRevD.82.111102].

Observation of the Y(1(3)D(J)) bottomonium state through decays to pi(+)pi(-)Y(1S)

PATRIGNANI, CLAUDIA;
2010

Abstract

Based on 122×106Υ(3S) events collected with the BABAR detector, we have observed the Υ(13DJ) bottomonium state through the Υ(3S)→γγΥ(13DJ)→γγπ+π−Υ(1S) decay chain. The significance for the J=2 member of the Υ(13DJ) triplet is 5.8 standard deviations including systematic uncertainties. The mass of the J=2 state is determined to be 10 164.5±0.8(stat)±0.5(syst)  MeV/c2. We use the π+π− invariant mass distribution to confirm the consistency of the observed state with the orbital angular momentum assignment of the Υ(13DJ).
2010
Sanchez, P.d.A., Lees, J.P., Poireau, V., Prencipe, E., Tisserand, V., Tico, J.G., et al. (2010). Observation of the Y(1(3)D(J)) bottomonium state through decays to pi(+)pi(-)Y(1S). PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 82(11), 1-7 [10.1103/PhysRevD.82.111102].
Sanchez, P. del Amo; Lees, J. P.; Poireau, V.; Prencipe, E.; Tisserand, V.; Tico, J. Garra; Grauges, E.; Martinelli, M.; Palano, A.; Pappagallo, M.; E...espandi
File in questo prodotto:
Eventuali allegati, non sono esposti

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/537448
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 49
  • ???jsp.display-item.citation.isi??? 28
social impact