Szczegóły publikacji
Opis bibliograficzny
Evidence of a $J/\psi K^{0}_{S}$ structure in $B^{0} \to J/\psi\phi K^{0}_{S}$ decays / R. Aaij, [et al.], M. FIRLEJ, [et al.], T. FIUTOWSKI, [et al.], M. IDZIK, [et al.], P. KOPCIEWICZ, [et al.], W. KRUPA, [et al.], W. Kucewicz, [et al.], M. W. MAJEWSKI, [et al.], J. MOROŃ, [et al.], A. OBŁĄKOWSKA-MUCHA, [et al.], B. RACHWAŁ, [et al.], J. RYŻKA, [et al.], K. ŚWIENTEK, [et al.], T. SZUMLAK, [et al.] // Physical Review Letters ; ISSN 0031-9007. — 2023 — vol. 131 iss. 13 art. no. 131901, s. 131901-1–131901-11. — Bibliogr. s. 131901-5–131901-6, Abstr. — Publikacja dostępna online od: 2023-09-26. — W. Kucewicz - afiliacja: Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków
Autorzy (1064)
Dane bibliometryczne
ID BaDAP | 149927 |
---|---|
Data dodania do BaDAP | 2023-12-08 |
Tekst źródłowy | URL |
DOI | 10.1103/PhysRevLett.131.131901 |
Rok publikacji | 2023 |
Typ publikacji | artykuł w czasopiśmie |
Otwarty dostęp | |
Creative Commons | |
Czasopismo/seria | Physical Review Letters |
Abstract
An amplitude analysis of B0→J/ψφKS0 decays is performed using proton-proton collision data, corresponding to an integrated luminosity of 9 fb-1, collected with the LHCb detector at center-of-mass energies of 7, 8, and 13 TeV. Evidence with a significance of 4.0 standard deviations of a structure in the J/ψKS0 system, named Tψs1θ(4000)0, is seen, with its mass and width measured to be 3991-10+12 -17+9 MeV/c2 and 105-25+29 -23+17 MeV, respectively, where the first uncertainty is statistical and the second systematic. The Tψs1θ(4000)0 state is likely to be the isospin partner of the Tψs1θ(4000)+ state, previously observed in the J/ψK+ system of the B+→J/ψφK+ decay. When isospin symmetry for the charged and neutral Tψs1θ(4000) states is assumed, the signal significance increases to 5.4 standard deviations.