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arXiv · 1306.4894

Experimental constraints on the spin and parity of the Z(4430)+

Belle Collaboration·K. Chilikin·R. Mizuk·I. Adachi·H. Aihara·K. Arinstein·D. M. Asner·V. Aulchenko·T. Aushev·T. Aziz·A. M. Bakich·A. Bala·V. Bhardwaj·B. Bhuyan·A. Bondar·G. Bonvicini·A. Bozek·M. Bračko·J. Brodzicka·T. E. Browder·V. Chekelian·A. Chen·P. Chen·B. G. Cheon·R. Chistov·I. -S. Cho·K. Cho·V. Chobanova·S. -K. Choi·Y. Choi·D. Cinabro·J. Dalseno·M. Danilov·Z. Doležal·D. Dutta·S. Eidelman·D. Epifanov·H. Farhat·J. E. Fast·T. Ferber·A. Frey·V. Gaur·N. Gabyshev·S. Ganguly·R. Gillard·Y. M. Goh·B. Golob·J. Haba·T. Hara·K. Hayasaka·H. Hayashii·Y. Horii·Y. Hoshi·W. -S. Hou·H. J. Hyun·T. Iijima·A. Ishikawa·R. Itoh·Y. Iwasaki·T. Julius·D. H. Kah·J. H. Kang·E. Kato·T. Kawasaki·H. Kichimi·C. Kiesling·D. Y. Kim·H. J. Kim·J. B. Kim·J. H. Kim·K. T. Kim·Y. J. Kim·K. Kinoshita·J. Klucar·B. R. Ko·P. Kodyš·S. Korpar·P. Križan·P. Krokovny·T. Kumita·A. Kuzmin·Y. -J. Kwon·J. S. Lange·S. -H. Lee·J. Li·Y. Li·J. Libby·C. Liu·Y. Liu·D. Liventsev·P. Lukin·J. MacNaughton·D. Matvienko·K. Miyabayashi·H. Miyata·G. B. Mohanty·A. Moll·T. Mori·N. Muramatsu·R. Mussa
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Abstract

We perform a full amplitude analysis of B0 -> psi' K+ pi- decays, with psi' -> mu+ mu- or e+ e-, to constrain the spin and parity of the Z(4430)-. The J^P=1+ hypothesis is favored over the 0-, 1-, 2- and 2+ hypotheses at the levels of 3.4 sigma, 3.7 sigma, 4.7 sigma and 5.1 sigma, respectively. The analysis is based on a 711 fb^-1 data sample that contains 772x10^6 B B pairs, collected at the Y(4S) resonance by the Belle detector at the asymmetric-energy e+ e- collider KEKB.

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Belle Collaboration, K. Chilikin, R. Mizuk, I. Adachi, H. Aihara, K. Arinstein, D. M. Asner, V. Aulchenko, T. Aushev, T. Aziz, A. M. Bakich, A. Bala, V. Bhardwaj, B. Bhuyan, A. Bondar, G. Bonvicini, A. Bozek, M. Bračko, J. Brodzicka, T. E. Browder, V. Chekelian, A. Chen, P. Chen, B. G. Cheon, R. Chistov, I. -S. Cho, K. Cho, V. Chobanova, S. -K. Choi, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, Z. Doležal, D. Dutta, S. Eidelman, D. Epifanov, H. Farhat, J. E. Fast, T. Ferber, A. Frey, V. Gaur, N. Gabyshev, S. Ganguly, R. Gillard, Y. M. Goh, B. Golob, J. Haba, T. Hara, K. Hayasaka, H. Hayashii, Y. Horii, Y. Hoshi, W. -S. Hou, H. J. Hyun, T. Iijima, A. Ishikawa, R. Itoh, Y. Iwasaki, T. Julius, D. H. Kah, J. H. Kang, E. Kato, T. Kawasaki, H. Kichimi, C. Kiesling, D. Y. Kim, H. J. Kim, J. B. Kim, J. H. Kim, K. T. Kim, Y. J. Kim, K. Kinoshita, J. Klucar, B. R. Ko, P. Kodyš, S. Korpar, P. Križan, P. Krokovny, T. Kumita, A. Kuzmin, Y. -J. Kwon, J. S. Lange, S. -H. Lee, J. Li, Y. Li, J. Libby, C. Liu, Y. Liu, D. Liventsev, P. Lukin, J. MacNaughton, D. Matvienko, K. Miyabayashi, H. Miyata, G. B. Mohanty, A. Moll, T. Mori, N. Muramatsu, R. Mussa. 2013-06-20. Experimental constraints on the spin and parity of the Z(4430)+. https://doi.org/10.1103/physrevd.88.074026

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