Details

Autor(en) / Beteiligte

• Asner, D. M.
• Aushev, T.
• Babu, V.
• Bansal, V.
• Behera, P.
• Beleño, C.
• Berger, M.
• Bhardwaj, V.
• Biswal, J.
• Bobrov, A.
• Bračko, M.
• Browder, T. E.
• Campajola, M.
• Cao, L.
• Chekelian, V.
• Choi, S.-K.
• Choi, Y.
• Cunliffe, S.
• Di Carlo, S.
• Doležal, Z.
• Epifanov, D.
• Fast, J. E.
• Ferber, T.
• Fulsom, B. G.
• Garg, R.
• Gaur, V.
• Gelb, M.
• Grzymkowska, O.
• Haba, J.
• Hayasaka, K.
• Hsu, C.-L.
• Iwasaki, M.
• Iwasaki, Y.
• Jacobs, W. W.
• Jia, S.
• Joo, K. K.
• Kiesling, C.
• Kim, C. H.
• Kim, D. Y.
• Kim, S. H.
• Kinoshita, K.
• Korpar, S.
• Krokovny, P.
• Kulasiri, R.
• Kumar, R.
• Kwon, Y.-J.
• Lange, J. S.
• Lee, J. K.
• Lee, J. Y.
• Lee, S. C.
• Li, Y. B.
• Liventsev, D.
• Lu, P.-C.
• MacNaughton, J.
• MacQueen, C.
• Masuda, M.
• Matsuda, T.
• Matvienko, D.
• Merola, M.
• Miyabayashi, K.
• Mori, T.
• Nakao, M.
• Nath, K. J.
• Nayak, M.
• Nisar, N. K.
• Nishida, S.
• Nishimura, K.
• Pakhlova, G.
• Pedlar, T. K.
• Popov, V.
• Ritter, M.
• Rostomyan, A.
• Sandilya, S.
• Sanuki, T.
• Schnell, G.
• Schwanda, C.
• Seino, Y.
• Shen, C. P.
• Shwartz, B.
• Simon, F.
• Starič, M.
• Stottler, Z. S.
• Sumiyoshi, T.
• Takizawa, M.
• Tamponi, U.
• Tanida, K.
• Uno, S.
• Usov, Y.
• Van Tonder, R.
• Vinokurova, A.
• Wang, B.
• Wang, C. H.
• Wang, M.-Z.
• Wang, P.
• Ye, H.
• Yelton, J.
• Yin, J. H.
• Yuan, C. Z.
• Zhang, J.
• Zhilich, V.

Titel

Evidence for $B^ + → h_ c K^ +$ and observation of $η_c ( 2 S ) → p \bar{p} π + π

Ort / Verlag

Deutsches Elektronen-Synchrotron, DESY, Hamburg

Erscheinungsjahr

2019

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• A search for the decays $B^+ \rightarrow h_c K^+$ and $B^0 \rightarrow h_c K_S^0$ is performed. Evidence for the decay $B^+ \rightarrow h_c K^+$ is found; its significance is $4.8\sigma$. No evidence is found for $B^0 \rightarrow h_c K_S^0$. The branching fraction for $B^+ \rightarrow h_c K^+$ is measured to be $(3.7^{+1.0}_{-0.9}{}^{+0.8}_{-0.8}) \times 10^{-5}$; the upper limit for the $B^0 \rightarrow h_c K_S^0$ branching fraction is $1.4 \times 10^{-5}$ at $90\%$ C.L. In addition, a study of the $p \bar{p} \pi^+ \pi^-$ invariant mass distribution in the channel $B^+ \to (p \bar{p} \pi^+ \pi^-) K^+$ results in the first observation of the decay $\eta_c(2S) \to p \bar{p} \pi^+ \pi^-$ with $12.1\sigma$ significance. The analysis is based on the 711 $\mathrm{fb}^{-1}$ data sample collected by the Belle detector at the asymmetric-energy $e^+ e^-$ collider KEKB at the $\Upsilon(4S)$ resonance.