A. Vinokurova (Avtor), Marko Bračko (Avtor), Boštjan Golob (Avtor), Samo Korpar (Avtor), Peter Križan (Avtor), Rok Pestotnik (Avtor), Marko Petrič (Avtor), Eva Ribežl (Avtor), Samo Stanič (Avtor), Marko Starič (Avtor), Luka Šantelj (Avtor), Anže Zupanc (Avtor)

Povzetek

We report a search for B decays to selected final states with the ηc meson: B± → K±ηcπ+π−, B± → K±ηcω, B± → K±ηcη and B± → K±ηcπ0. The analysis is based on 772 × 10^6 B¯B pairs collected at the Υ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e− collider. We set 90% confidence level upper limits on the branching fractions of the studied B decay modes, independent of intermediate resonances, in the range (0.6–5.3)×10^−4. We also search for molecular-state candidates in the D^0 ¯D^∗0 − ¯D^0D^∗0, D^0 ¯D^0 + ¯D^0D^0 and D^∗0¯D^∗0 + ¯D^∗0D^∗0 combinations, neutral partners of the Z(3900)± and Z(4020)±, and a poorly understood state X(3915) as possible intermediate states in the decay chain, and set 90% confidence level upper limits on the product of branching fractions to the mentioned intermediate states and decay branching fractions of these states in the range (0.6–6.9)×10^−5.

Ključne besede

exotics;quarkonium;e+-e- experiments;B physics;particle and resonance production;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UM FKKT - Fakulteta za kemijo in kemijsko tehnologijo
UDK: 539.1
COBISS: 29001255 Povezava se bo odprla v novem oknu
ISSN: 1029-8479
Št. ogledov: 887
Št. prenosov: 427
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Slovenski jezik
Sekundarne ključne besede: eksotika;kvarkonij;e+-e- eksperimenti;B fizika;produkcija delcev in resonance;
URN: URN:SI:UM:
Vrsta dela (COBISS): Znanstveno delo
Strani: str. 132-1-132-23
Letnik: ǂVol. ǂ2015
Zvezek: ǂno. ǂ06
Čas izdaje: 2015
DOI: 10.1007/JHEP06(2015)132
ID: 10844764