Zobrazeno 1 - 10
of 216
pro vyhledávání: '"Sabelli, C"'
Autor:
Sabelli, C
We reconsider the discrepancy between theory and data in the momentum distribution of slow J/psi in B decays. Beside an update of the standard color singlet and color octet QCD components, we include the contribution from XY Z exotic mesons, and show
Externí odkaz:
http://arxiv.org/abs/1107.3065
Publikováno v:
Phys.Rev.D83:114029,2011
The discrepancy between theory and data in the momentum distribution of slow J/psi in B decays has been several times addressed as a puzzle. Using the most recent results on exclusive B decays into J/psi and heavy kaons or exotic mesons and reconside
Externí odkaz:
http://arxiv.org/abs/1104.1781
Publikováno v:
Phys.Rev.D82:074003,2010
Very recently the BaBar collaboration has put forward a claim that the X(3872) is not a 1^++ resonance, as most of the phenomenological work on the subject was relying on, but rather a 2^-+ one. We examine the consequences of this quantum number assi
Externí odkaz:
http://arxiv.org/abs/1008.0018
Publikováno v:
Riv. Nuovo Cim. 033:633-712,2010
In the past few years the field of hadron spectroscopy has seen renewed interest due to the pubblication, initially mostly from B-Factories, of evidences of states that do not match regular spectroscopy, but are rather candidates for bound states wit
Externí odkaz:
http://arxiv.org/abs/1006.2741
Publikováno v:
Phys.Lett.B684:228-230,2010
In a recent paper we have proposed a method to estimate the prompt production cross section of X(3872) at the Tevatron assuming that this particle is a loosely bound molecule of a D and a D*bar meson. Under this hypothesis we find that it is impossib
Externí odkaz:
http://arxiv.org/abs/0912.5064
Publikováno v:
Phys.Rev.Lett.104:132005,2010
We re-analyze the published data on the Y(4630) --> Lambda_c Lambdabar_c and the Y(4660) --> psi(2S) pi pi with a consistent Ansatz and we find that the two observations are likely to be due to the same state Y_B with M_{Y_B} = 4660.7 +- 8.7 MeV and
Externí odkaz:
http://arxiv.org/abs/0911.2178
Publikováno v:
Phys.Rev.Lett.103:162001,2009
The X(3872) is universally accepted to be an exotic hadron. In this letter we assume that the X(3872) is a D0 \bar D0* molecule, as claimed by many authors, and attempt an estimate of its prompt production cross section at Tevatron. A comparison with
Externí odkaz:
http://arxiv.org/abs/0906.0882
Autor:
Chiarini, M1, Sabelli, C1, Melotti, P2, Garlanda, C3, Savoldi, G1, Mazza, C1, Padoan, R1, Plebani, A1, Mantovani, A4, Notarangelo, L D1, Assael, B M2, Badolato, R1
Publikováno v:
Genes & Immunity. Dec2010, Vol. 11 Issue 8, p665-670. 6p. 2 Diagrams, 5 Charts.
