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arXiv · 1209.6450

Study of Three-Body Y(10860) Decays

I. Adachi·K. Adamczyk·H. Aihara·K. Arinstein·Y. Arita·D. M. Asner·T. Aso·V. Aulchenko·T. Aushev·T. Aziz·A. M. Bakich·Y. Ban·E. Barberio·M. Barrett·A. Bay·I. Bedny·M. Belhorn·K. Belous·V. Bhardwaj·B. Bhuyan·M. Bischofberger·S. Blyth·A. Bondar·G. Bonvicini·A. Bozek·M. Bra\v·J. Brodzicka·O. Brovchenko·T. E. Browder·M. -C. Chang·P. Chang·Y. Chao·V. Chekelian·A. Chen·K. -F. Chen·P. Chen·B. G. Cheon·K. Chilikin·R. Chistov·I. -S. Cho·K. Cho·K. -S. Choi·S. -K. Choi·Y. Choi·J. Crnkovic·J. Dalseno·M. Danilov·J. Dingfelder·Z. Dole\v·Z. Drásal·A. Drutskoy·W. Dungel·D. Dutta·S. Eidelman·D. Epifanov·S. Esen·J. E. Fast·M. Feindt·A. Frey·M. Fujikawa·V. Gaur·N. Gabyshev·A. Garmash·Y. M. Goh·B. Golob·M. GrossePerdekamp·H. Guo·J. Haba·P. Hamer·Y. L. Han·K. Hara·T. Hara·Y. Hasegawa·K. Hayasaka·H. Hayashii·D. Heffernan·T. Higuchi·Y. Horii·Y. Hoshi·K. Hoshina·W. -S. Hou·Y. B. Hsiung·H. J. Hyun·Y. Igarashi·T. Iijima·M. Imamura·K. Inami·A. Ishikawa·R. Itoh·M. Iwabuchi·M. Iwasaki·Y. Iwasaki·T. Iwashita·S. Iwata·I. Jaegle·M. Jones·T. Julius·D. H. Kah·H. Kakuno·J. H. Kang
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Abstract

We report preliminary results on the analysis of the three-body Y(10860)=> B barB pi, Y(10860) => (B barB* + c.c.) pi and Y(10860)=> B* barB* pi decays including an observation of the Y(10860)=> Zb(10610)+- pi-+ => [B barB*+c.c]+- pi-+ and Y(10860)=> Zb(10650)+- pi-+ => [B* barB*]+- pi-+ decays as intermediate channels. We measure branching fractions of the three-body decays to be Br(Y(10860)=> [B barB*+c.c.]+- pi-+)=(28.3+-2.9+-4.6)x10^{-3} and Br(Y(10860)=> [B* barB*]+- pi-+)=(14.1+-1.9+-2.4)x10^{-3} and set 90% C.L. upper limit Br(Y(10860)=> [B barB]+- pi-+)<4.0x10^{-3}. We also report results on the amplitude analysis of the three-body Y(10860)=>Y(nS)pi+pi-, n=1,2,3 decays and the analysis of the internal structure of the three-body Y(10860)=>hb(mP)pi+pi-, m=1,2 decays. The results are based on a 121.4 1/fb data sample collected with the Belle detector at a center-of-mass energy near the Y(10860).

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I. Adachi, K. Adamczyk, H. Aihara, K. Arinstein, Y. Arita, D. M. Asner, T. Aso, V. Aulchenko, T. Aushev, T. Aziz, A. M. Bakich, Y. Ban, E. Barberio, M. Barrett, A. Bay, I. Bedny, M. Belhorn, K. Belous, V. Bhardwaj, B. Bhuyan, M. Bischofberger, S. Blyth, A. Bondar, G. Bonvicini, A. Bozek, M. Bra\v, J. Brodzicka, O. Brovchenko, T. E. Browder, M. -C. Chang, P. Chang, Y. Chao, V. Chekelian, A. Chen, K. -F. Chen, P. Chen, B. G. Cheon, K. Chilikin, R. Chistov, I. -S. Cho, K. Cho, K. -S. Choi, S. -K. Choi, Y. Choi, J. Crnkovic, J. Dalseno, M. Danilov, J. Dingfelder, Z. Dole\v, Z. Drásal, A. Drutskoy, W. Dungel, D. Dutta, S. Eidelman, D. Epifanov, S. Esen, J. E. Fast, M. Feindt, A. Frey, M. Fujikawa, V. Gaur, N. Gabyshev, A. Garmash, Y. M. Goh, B. Golob, M. GrossePerdekamp, H. Guo, J. Haba, P. Hamer, Y. L. Han, K. Hara, T. Hara, Y. Hasegawa, K. Hayasaka, H. Hayashii, D. Heffernan, T. Higuchi, Y. Horii, Y. Hoshi, K. Hoshina, W. -S. Hou, Y. B. Hsiung, H. J. Hyun, Y. Igarashi, T. Iijima, M. Imamura, K. Inami, A. Ishikawa, R. Itoh, M. Iwabuchi, M. Iwasaki, Y. Iwasaki, T. Iwashita, S. Iwata, I. Jaegle, M. Jones, T. Julius, D. H. Kah, H. Kakuno, J. H. Kang. 2012-10-01. Study of Three-Body Y(10860) Decays. https://arxiv.org/abs/1209.6450

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