Study of D^{**} production and light hadronic states in the bar{B}⁰ to D^{*+} ω π^- decay

Belle Collaboration: D. Matvienko , A. Kuzmin , S. Eidelman , A. Abdesselam , I. Adachi , H. Aihara , S. Al Said , K. Arinstein

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D. M. Asner V. Aulchenko T. Aushev R. Ayad V. Babu I. Badhrees S. Bahinipati A. M. Bakich V. Bansal V. Bhardwaj B. Bhuyan J. Biswal A. Bobrov A. Bondar G. Bonvicini A. Bozek M. Bra\v{c}ko T. E. Browder D. \v{C}ervenkov A. Chen B. G. Cheon K. Chilikin R. Chistov K. Cho V. Chobanova S.-K. Choi D. Cinabro J. Dalseno J. Dingfelder Z. Dole\v{z}al Z. Dr\'asal A. Drutskoy D. Dutta D. Epifanov H. Farhat J. E. Fast T. Ferber B. G. Fulsom V. Gaur N. Gabyshev A. Garmash D. Getzkow R. Gillard Y. M. Goh P. Goldenzweig B. Golob T. Hara K. Hayasaka H. Hayashii X. H. He W.-S. Hou T. Iijima G. Inguglia A. Ishikawa R. Itoh Y. Iwasaki I. Jaegle D. Joffe K. K. Joo T. Julius T. Kawasaki D. Y. Kim J. B. Kim J. H. Kim K. T. Kim M. J. Kim S. H. Kim Y. J. Kim B. R. Ko P. Kody\v{s} S. Korpar P. Krokovny R. Kumar J. S. Lange D. H. Lee L. Li Gioi J. Libby D. Liventsev K. Miyabayashi H. Miyata R. Mizuk G. B. Mohanty A. Moll R. Mussa E. Nakano M. Nakao T. Nanut M. Nayak N. K. Nisar S. Nishida S. Ogawa G. Pakhlova B. Pal C. W. Park H. Park T. K. Pedlar L. Pes\'antez R. Pestotnik M. Petri\v{c} L. E. Piilonen C. Pulvermacher E. Ribe\v{z}l M. Ritter A. Rostomyan Y. Sakai S. Sandilya L. Santelj T. Sanuki O. Schneider G. Schnell C. Schwanda K. Senyo O. Seon M. E. Sevior M. Shapkin V. Shebalin C. P. Shen T.-A. Shibata J.-G. Shiu B. Shwartz A. Sibidanov F. Simon Y.-S. Sohn A. Sokolov M. Stari\v{c} M. Steder M. Sumihama K. Sumisawa U. Tamponi K. Tanida Y. Teramoto M. Uchida S. Uehara Y. Unno S. Uno P. Urquijo Y. Usov C. Van Hulse P. Vanhoefer G. Varner A. Vinokurova V. Vorobyev M. N. Wagner C. H. Wang M.-Z. Wang P. Wang Y. Watanabe K. M. Williams E. Won H. Yamamoto S. Yashchenko Y. Yook Z. P. Zhang V. Zhilich V. Zhulanov A. Zupanc

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classification ✦ hep-ex

keywords omegafractionsbranchingdecaymathcalmeasurementsstatestimes

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We report on the first observations of $\bar{B}^0 \to D_1(2430)^0 \omega$, $\bar{B}^0 \to D_1(2420)^0 \omega$ and $\bar{B}^0 \to D^*_2(2460)^0 \omega$ decays. The $\bar{B}^0 \to D^{*+} \rho(1450)^-$ decay is also observed. The branching fraction measurements are based on $(771.6 \pm 10.6)\times 10^6$ $B\bar{B}$ events collected at the $\Upsilon(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider. The fractions of longitudinal polarization of the $D^{**}$ states as well as partial wave fractions of the $D_1(2430)^0$ are obtained. We also set a $90\%$ confidence level upper limit for the product of branching fractions of $\mathcal{B}(\bar{B}^0 \to D^{*+} b_1(1235)^-) \times \mathcal{B}(b_1(1235)^- \to \omega \pi^-)$. The measurements show evidence of nontrivial final-state interaction phases for the $\rho$-like amplitudes.

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Study of D^{**} production and light hadronic states in the bar{B}⁰ to D^{*+} ω π^- decay

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