Evidence for neutral B meson decays to ωk*0

Goldenzweig, P.; Schwartz, A.J.; Adachi, I.; Aihara, H.; Arinstein, K.; Aulchenko, V.; Aushev, T.; Bahinipati, S.; Bakich, A.M.; Bay, A.; Bedny, I.; Bhardwaj, V.; Bitenc, U.; Bondar, A.; Bozek, A.; Bračko, M.; Browder, T.E.; Chang, P.; Chao, Y.; Chen, A.; Chen, K.-F.; Cheon, B.G.; Chiang, C.-C.; Chistov, R.; Cho, I.-S.; Choi, Y.; Dalseno, J.; Dash, M.; Drutskoy, A.; Eidelman, S.; Golob, B.; Ha, H.; Hayasaka, K.; Hayashii, H.; Hazumi, M.; Heffernan, D.; Hoshi, Y.; Hou, W.-S.; Hsiung, Y.B.; Hyun, H.J.; Iijima, T.; Inami, K.; Ishikawa, A.; Ishino, H.; Iwasaki, M.; Kah, D.H.; Kang, J.H.; Kawasaki, T.; Kichimi, H.; Kim, H.J.; Kim, S.K.; Kim, Y.I.; Kim, Y.J.; Kinoshita, K.; Korpar, S.; Križan, P.; Krokovny, P.; Kumar, R.; Kuzmin, A.; Kwon, Y.-J.; Kyeong, S.-H.; Lange, J.S.; Lee, J.S.; Lee, M.J.; Lee, S.E.; Lesiak, T.; Li, J.; Limosani, A.; Lin, S.-W.; Liu, C.; Liu, Y.; MacNaughton, J.; Mandl, F.; McOnie, S.; Miyabayashi, K.; Miyata, H.; Miyazaki, Y.; Mizuk, R.; Nagamine, T.; Nakano, E.; Nakao, M.; Nakazawa, H.; Nishida, S.; Nitoh, O.; Ogawa, S.; Ohshima, T.; Okuno, S.; Olsen, S.L.; Ostrowicz, W.; Ozaki, H.; Pakhlov, P.; Pakhlova, G.; Palka, H.; Park, C.W.; Park, H.; Park, H.K.; Peak, L.S.; Pestotnik, R.; Piilonen, L.E.; Sahoo, H.

doi:10.1103/PhysRevLett.101.231801

research article

Evidence for neutral B meson decays to ωk*0

Goldenzweig, P.

•

Schwartz, A.J.

•

Adachi, I.

2008

Physical Review Letters

We present the results of a study of the charmless vector-vector decay B0→ωK0 with 657×106 BB̅ pairs collected with the Belle detector at the KEKB e+e- collider. We measure the branching fraction to be B(B0→ωK0)=[1.8±0.7(stat)±0.3(syst)]×10-6 with 3.0σ significance. We also perform a helicity analysis of the ω and K0 vector mesons, and obtain the longitudinal polarization fraction fL(B0→ωK0)=0.56±0.29(stat)-0.08+0.18(syst). Finally, we measure a large nonresonant branching fraction B[B0→ωK+π-;MKπ∈(0.755,1.250) GeV/c2 ]=[5.1±0.7(stat)±0.7(syst)]×10-6 with a significance of 9.5σ.

Type

research article

DOI

10.1103/PhysRevLett.101.231801

Web of Science ID

WOS:000261431200013

Scopus ID

2-s2.0-57349099374

Author(s)

Goldenzweig, P.

Schwartz, A.J.

Adachi, I.

Aihara, H.

Arinstein, K.

Aulchenko, V.

Aushev, T.

Bahinipati, S.

Bakich, A.M.

Bay, A.

Date Issued

2008

Published in

Physical Review Letters

Volume

101

Issue

23

Article Number

231801

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units

LPHE

Available on Infoscience

November 5, 2010

Use this identifier to reference this record

https://infoscience.epfl.ch/handle/20.500.14299/56935