Measurement of exclusive Υ(1S) and Υ(2S) decays into vector-pseudoscalar final states

C. P. Shen; C. Z. Yuan; I. Adachi; H. Aihara; D. M. Asner; V. Aulchenko; A. M. Bakich; A. Bala; B. Bhuyan; M. Bischofberger; A. Bozek; M. Bračko; T. E. Browder; V. Chekelian; A. Chen; P. Chen; B. G. Cheon; K. Chilikin; I. S. Cho; K. Cho; V. Chobanova; Y. Choi; D. Cinabro; J. Dalseno; M. Danilov; J. Dingfelder; Z. Doležal; Z. Drásal; A. Drutskoy; D. Dutta; K. 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. 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; 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; S. H. Lee; R. Leitner; J. Li; Y. Li; J. Libby; C. Liu; Y. Liu; Z. Q. Liu; D. Liventsev; P. Lukin; D. Matvienko; K. Miyabayashi; H. Miyata; G. B. Mohanty; A. Moll; T. Mori; N. Muramatsu; R. Mussa; Y. Nagasaka; E. Nakano; M. Nakao; Z. Natkaniec; M. Nayak; E. Nedelkovska; C. Ng; N. K. Nisar; S. Nishida; O. Nitoh; S. Ogawa; S. Okuno; S. L. Olsen; W. Ostrowicz; P. Pakhlov; C. W. Park; H. Park; H. K. Park; T. K. Pedlar; T. Peng; R. Pestotnik; M. Petrič; L. E. Piilonen; M. Ritter; M. Röhrken; A. Rostomyan; S. Ryu; H. Sahoo; T. Saito; Y. Sakai; S. Sandilya; L. Santelj; T. Sanuki; Y. Sato; V. Savinov; O. Schneider; G. Schnell; C. Schwanda; K. Senyo; O. Seon; M. Shapkin; V. Shebalin; T. A. Shibata; J. G. Shiu; B. Shwartz; A. Sibidanov; F. Simon; P. Smerkol; Y. S. Sohn; A. Sokolov; E. Solovieva; S. Stanič; M. Starič; M. Steder; M. Sumihama; T. Sumiyoshi; U. Tamponi; K. Tanida; G. Tatishvili; Y. Teramoto; T. Tsuboyama; M. Uchida; S. Uehara; Y. Unno; S. Uno; P. Urquijo; S. E. Vahsen; C. Van Hulse; P. Vanhoefer; G. Varner; V. Vorobyev; M. N. Wagner; C. H. Wang; P. Wang; X. L. Wang; M. Watanabe; Y. Watanabe; E. Won; H. Yamamoto; J. Yamaoka; Y. Yamashita; S. Yashchenko; Y. Yook; Y. Yusa; C. C. Zhang; Z. P. Zhang; V. Zhilich; A. Zupanc

doi:10.1103/PhysRevD.88.011102

Measurement of exclusive Υ(1S) and Υ(2S) decays into vector-pseudoscalar final states

C. P. Shen, C. Z. Yuan, I. Adachi, H. Aihara, D. M. Asner, V. Aulchenko, A. M. Bakich, A. Bala, B. Bhuyan, M. Bischofberger, A. Bozek, M. Bračko, T. E. Browder, V. Chekelian, A. Chen, P. Chen, B. G. Cheon, K. Chilikin, I. S. Cho, K. ChoV. Chobanova, Y. Choi, D. Cinabro, J. Dalseno, M. Danilov, J. Dingfelder, Z. Doležal, Z. Drásal, A. Drutskoy, D. Dutta, K. 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. 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, 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, S. H. Lee, R. Leitner, J. Li, Y. Li, J. Libby, C. Liu, Y. Liu, Z. Q. Liu, D. Liventsev, P. Lukin, D. Matvienko, K. Miyabayashi, H. Miyata, G. B. Mohanty, A. Moll, T. Mori, N. Muramatsu, R. Mussa, Y. Nagasaka, E. Nakano, M. Nakao, Z. Natkaniec, M. Nayak, E. Nedelkovska, C. Ng, N. K. Nisar, S. Nishida, O. Nitoh, S. Ogawa, S. Okuno, S. L. Olsen, W. Ostrowicz, P. Pakhlov, C. W. Park, H. Park, H. K. Park, T. K. Pedlar, T. Peng, R. Pestotnik, M. Petrič, L. E. Piilonen, M. Ritter, M. Röhrken, A. Rostomyan, S. Ryu, H. Sahoo, T. Saito, Y. Sakai, S. Sandilya, L. Santelj, T. Sanuki, Y. Sato, V. Savinov, O. Schneider, G. Schnell, C. Schwanda, K. Senyo, O. Seon, M. Shapkin, V. Shebalin, T. A. Shibata, J. G. Shiu, B. Shwartz, A. Sibidanov, F. Simon, P. Smerkol, Y. S. Sohn, A. Sokolov, E. Solovieva, S. Stanič, M. Starič, M. Steder, M. Sumihama, T. Sumiyoshi, U. Tamponi, K. Tanida, G. Tatishvili, Y. Teramoto, T. Tsuboyama, M. Uchida, S. Uehara, Y. Unno, S. Uno, P. Urquijo, S. E. Vahsen, C. Van Hulse, P. Vanhoefer, G. Varner, V. Vorobyev, M. N. Wagner, C. H. Wang, P. Wang, X. L. Wang, M. Watanabe, Y. Watanabe, E. Won, H. Yamamoto, J. Yamaoka, Y. Yamashita, S. Yashchenko, Y. Yook, Y. Yusa, C. C. Zhang, Z. P. Zhang, V. Zhilich, A. Zupanc

Department of Physics

Research output: Contribution to journal › Article › peer-review

10 Citations (Scopus)

Abstract

Using samples of 102 million Υ(1S) and 158 million Υ(2S) events collected with the Belle detector, we study exclusive hadronic decays of these two bottomonium resonances to KS0K⁺π^- and charge-conjugate (c.c.) states, π⁺π^-π0π0, and π⁺π^-π0, and to the two-body Vector-Pseudoscalar (K*(892)0K^̄0+c.c., K*(892)^-K ⁺+c.c., ωπ0, and ρπ) final states. For the first time, signals are observed in the modes Υ(1S)→KS0K⁺π ^-+c.c., π⁺π^-π0π0, and Υ(2S)→π⁺π^-π0π0, and evidence is found for the modes Υ(1S)→π⁺π^-π0, K*(892)0K^̄0+c.c., and Υ(2S)→KS0K ⁺π^-+c.c. Branching fractions are measured for all the processes, while 90% confidence level upper limits on the branching fractions are also set for the modes with a statistical significance of less than 3σ. The ratios of the branching fractions of Υ(2S) and Υ(1S) decays into the same final state are used to test a perturbative QCD prediction for Okubo-Zweig-Iizuka-suppressed bottomonium decays.

Original language	English
Article number	011102
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	88
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevD.88.011102
Publication status	Published - 2013 Jul 23

ASJC Scopus subject areas

Nuclear and High Energy Physics
Physics and Astronomy (miscellaneous)

Access to Document

10.1103/PhysRevD.88.011102

Cite this

Shen, C. P., Yuan, C. Z., Adachi, I., Aihara, H., Asner, D. M., Aulchenko, V., Bakich, A. M., Bala, A., Bhuyan, B., Bischofberger, M., Bozek, A., Bračko, M., Browder, T. E., Chekelian, V., Chen, A., Chen, P., Cheon, B. G., Chilikin, K., Cho, I. S., ... Zupanc, A. (2013). Measurement of exclusive Υ(1S) and Υ(2S) decays into vector-pseudoscalar final states. Physical Review D - Particles, Fields, Gravitation and Cosmology, 88(1), [011102]. https://doi.org/10.1103/PhysRevD.88.011102

Shen, CP, Yuan, CZ, Adachi, I, Aihara, H, Asner, DM, Aulchenko, V, Bakich, AM, Bala, A, Bhuyan, B, Bischofberger, M, Bozek, A, Bračko, M, Browder, TE, Chekelian, V, Chen, A, Chen, P, Cheon, BG, Chilikin, K, Cho, IS, Cho, K, Chobanova, V, Choi, Y, Cinabro, D, Dalseno, J, Danilov, M, Dingfelder, J, Doležal, Z, Drásal, Z, Drutskoy, A, Dutta, D, Dutta, K, Eidelman, S, Epifanov, D, Farhat, H, Fast, JE, Ferber, T, Frey, A, Gaur, V, Gabyshev, N, Ganguly, S, Gillard, R, Goh, YM, Golob, B, Haba, J, Hara, T, Hayasaka, K, Hayashii, H, Hoshi, Y, Hou, WS, Hyun, HJ, Iijima, T, Ishikawa, A, Itoh, R, Iwasaki, Y, Julius, T, Kah, DH, Kang, JH, Kato, E, Kawasaki, T, Kiesling, C, Kim, DY, Kim, HJ, Kim, JB, Kim, JH, Kim, KT, Kim, YJ, Kinoshita, K, Klucar, J, Ko, BR, Kodyš, P, Korpar, S, Križan, P, Krokovny, P, Kumita, T, Kuzmin, A, Kwon, YJ, Lee, SH, Leitner, R, Li, J, Li, Y, Libby, J, Liu, C, Liu, Y, Liu, ZQ, Liventsev, D, Lukin, P, Matvienko, D, Miyabayashi, K, Miyata, H, Mohanty, GB, Moll, A, Mori, T, Muramatsu, N, Mussa, R, Nagasaka, Y, Nakano, E, Nakao, M, Natkaniec, Z, Nayak, M, Nedelkovska, E, Ng, C, Nisar, NK, Nishida, S, Nitoh, O, Ogawa, S, Okuno, S, Olsen, SL, Ostrowicz, W, Pakhlov, P, Park, CW, Park, H, Park, HK, Pedlar, TK, Peng, T, Pestotnik, R, Petrič, M, Piilonen, LE, Ritter, M, Röhrken, M, Rostomyan, A, Ryu, S, Sahoo, H, Saito, T, Sakai, Y, Sandilya, S, Santelj, L, Sanuki, T, Sato, Y, Savinov, V, Schneider, O, Schnell, G, Schwanda, C, Senyo, K, Seon, O, Shapkin, M, Shebalin, V, Shibata, TA, Shiu, JG, Shwartz, B, Sibidanov, A, Simon, F, Smerkol, P, Sohn, YS, Sokolov, A, Solovieva, E, Stanič, S, Starič, M, Steder, M, Sumihama, M, Sumiyoshi, T, Tamponi, U, Tanida, K, Tatishvili, G, Teramoto, Y, Tsuboyama, T, Uchida, M, Uehara, S, Unno, Y, Uno, S, Urquijo, P, Vahsen, SE, Van Hulse, C, Vanhoefer, P, Varner, G, Vorobyev, V, Wagner, MN, Wang, CH, Wang, P, Wang, XL, Watanabe, M, Watanabe, Y, Won, E, Yamamoto, H, Yamaoka, J, Yamashita, Y, Yashchenko, S, Yook, Y, Yusa, Y, Zhang, CC, Zhang, ZP, Zhilich, V & Zupanc, A 2013, 'Measurement of exclusive Υ(1S) and Υ(2S) decays into vector-pseudoscalar final states', Physical Review D - Particles, Fields, Gravitation and Cosmology, vol. 88, no. 1, 011102. https://doi.org/10.1103/PhysRevD.88.011102

@article{ca14e5c4d21d4e87bf77cae0fe13e861,

title = "Measurement of exclusive Υ(1S) and Υ(2S) decays into vector-pseudoscalar final states",

abstract = "Using samples of 102 million Υ(1S) and 158 million Υ(2S) events collected with the Belle detector, we study exclusive hadronic decays of these two bottomonium resonances to KS0K+π- and charge-conjugate (c.c.) states, π+π-π0π0, and π+π-π0, and to the two-body Vector-Pseudoscalar (K*(892)0{\=K}0+c.c., K*(892)-K ++c.c., ωπ0, and ρπ) final states. For the first time, signals are observed in the modes Υ(1S)→KS0K+π -+c.c., π+π-π0π0, and Υ(2S)→π+π-π0π0, and evidence is found for the modes Υ(1S)→π+π-π0, K*(892)0{\=K}0+c.c., and Υ(2S)→KS0K +π-+c.c. Branching fractions are measured for all the processes, while 90% confidence level upper limits on the branching fractions are also set for the modes with a statistical significance of less than 3σ. The ratios of the branching fractions of Υ(2S) and Υ(1S) decays into the same final state are used to test a perturbative QCD prediction for Okubo-Zweig-Iizuka-suppressed bottomonium decays.",

author = "Shen, {C. P.} and Yuan, {C. Z.} and I. Adachi and H. Aihara and Asner, {D. M.} and V. Aulchenko and Bakich, {A. M.} and A. Bala and B. Bhuyan and M. Bischofberger and A. Bozek and M. Bra{\v c}ko and Browder, {T. E.} and V. Chekelian and A. Chen and P. Chen and Cheon, {B. G.} and K. Chilikin and Cho, {I. S.} and K. Cho and V. Chobanova and Y. Choi and D. Cinabro and J. Dalseno and M. Danilov and J. Dingfelder and Z. Dole{\v z}al and Z. Dr{\'a}sal and A. Drutskoy and D. Dutta and K. Dutta and S. Eidelman and D. Epifanov and H. Farhat and Fast, {J. E.} and T. Ferber and A. Frey and V. Gaur and N. Gabyshev and S. Ganguly and R. Gillard and Goh, {Y. M.} and B. Golob and J. Haba and T. Hara and K. Hayasaka and H. Hayashii and Y. Hoshi and Hou, {W. S.} and Hyun, {H. J.} and T. Iijima and A. Ishikawa and R. Itoh and Y. Iwasaki and T. Julius and Kah, {D. H.} and Kang, {J. H.} and E. Kato and T. Kawasaki and C. Kiesling and Kim, {D. Y.} and Kim, {H. J.} and Kim, {J. B.} and Kim, {J. H.} and Kim, {K. T.} and Kim, {Y. J.} and K. Kinoshita and J. Klucar and Ko, {B. R.} and P. Kody{\v s} and S. Korpar and P. Kri{\v z}an and P. Krokovny and T. Kumita and A. Kuzmin and Kwon, {Y. J.} and Lee, {S. H.} and R. Leitner and J. Li and Y. Li and J. Libby and C. Liu and Y. Liu and Liu, {Z. Q.} and D. Liventsev and P. Lukin and D. Matvienko and K. Miyabayashi and H. Miyata and Mohanty, {G. B.} and A. Moll and T. Mori and N. Muramatsu and R. Mussa and Y. Nagasaka and E. Nakano and M. Nakao and Z. Natkaniec and M. Nayak and E. Nedelkovska and C. Ng and Nisar, {N. K.} and S. Nishida and O. Nitoh and S. Ogawa and S. Okuno and Olsen, {S. L.} and W. Ostrowicz and P. Pakhlov and Park, {C. W.} and H. Park and Park, {H. K.} and Pedlar, {T. K.} and T. Peng and R. Pestotnik and M. Petri{\v c} and Piilonen, {L. E.} and M. Ritter and M. R{\"o}hrken and A. Rostomyan and S. Ryu and H. Sahoo and T. Saito and Y. Sakai and S. Sandilya and L. Santelj and T. Sanuki and Y. Sato and V. Savinov and O. Schneider and G. Schnell and C. Schwanda and K. Senyo and O. Seon and M. Shapkin and V. Shebalin and Shibata, {T. A.} and Shiu, {J. G.} and B. Shwartz and A. Sibidanov and F. Simon and P. Smerkol and Sohn, {Y. S.} and A. Sokolov and E. Solovieva and S. Stani{\v c} and M. Stari{\v c} and M. Steder and M. Sumihama and T. Sumiyoshi and U. Tamponi and K. Tanida and G. Tatishvili and Y. Teramoto and T. Tsuboyama and M. Uchida and S. Uehara and Y. Unno and S. Uno and P. Urquijo and Vahsen, {S. E.} and {Van Hulse}, C. and P. Vanhoefer and G. Varner and V. Vorobyev and Wagner, {M. N.} and Wang, {C. H.} and P. Wang and Wang, {X. L.} and M. Watanabe and Y. Watanabe and E. Won and H. Yamamoto and J. Yamaoka and Y. Yamashita and S. Yashchenko and Y. Yook and Y. Yusa and Zhang, {C. C.} and Zhang, {Z. P.} and V. Zhilich and A. Zupanc",

year = "2013",

month = jul,

day = "23",

doi = "10.1103/PhysRevD.88.011102",

language = "English",

volume = "88",

journal = "Physical review D: Particles and fields",

issn = "0556-2821",

publisher = "American Institute of Physics Publising LLC",

number = "1",

}

TY - JOUR

T1 - Measurement of exclusive Υ(1S) and Υ(2S) decays into vector-pseudoscalar final states

AU - Shen, C. P.

AU - Yuan, C. Z.

AU - Adachi, I.

AU - Aihara, H.

AU - Asner, D. M.

AU - Aulchenko, V.

AU - Bakich, A. M.

AU - Bala, A.

AU - Bhuyan, B.

AU - Bischofberger, M.

AU - Bozek, A.

AU - Bračko, M.

AU - Browder, T. E.

AU - Chekelian, V.

AU - Chen, A.

AU - Chen, P.

AU - Cheon, B. G.

AU - Chilikin, K.

AU - Cho, I. S.

AU - Cho, K.

AU - Chobanova, V.

AU - Choi, Y.

AU - Cinabro, D.

AU - Dalseno, J.

AU - Danilov, M.

AU - Dingfelder, J.

AU - Doležal, Z.

AU - Drásal, Z.

AU - Drutskoy, A.

AU - Dutta, D.

AU - Dutta, K.

AU - Eidelman, S.

AU - Epifanov, D.

AU - Farhat, H.

AU - Fast, J. E.

AU - Ferber, T.

AU - Frey, A.

AU - Gaur, V.

AU - Gabyshev, N.

AU - Ganguly, S.

AU - Gillard, R.

AU - Goh, Y. M.

AU - Golob, B.

AU - Haba, J.

AU - Hara, T.

AU - Hayasaka, K.

AU - Hayashii, H.

AU - Hoshi, Y.

AU - Hou, W. S.

AU - Hyun, H. J.

AU - Iijima, T.

AU - Ishikawa, A.

AU - Itoh, R.

AU - Iwasaki, Y.

AU - Julius, T.

AU - Kah, D. H.

AU - Kang, J. H.

AU - Kato, E.

AU - Kawasaki, T.

AU - Kiesling, C.

AU - Kim, D. Y.

AU - Kim, H. J.

AU - Kim, J. B.

AU - Kim, J. H.

AU - Kim, K. T.

AU - Kim, Y. J.

AU - Kinoshita, K.

AU - Klucar, J.

AU - Ko, B. R.

AU - Kodyš, P.

AU - Korpar, S.

AU - Križan, P.

AU - Krokovny, P.

AU - Kumita, T.

AU - Kuzmin, A.

AU - Kwon, Y. J.

AU - Lee, S. H.

AU - Leitner, R.

AU - Li, J.

AU - Li, Y.

AU - Libby, J.

AU - Liu, C.

AU - Liu, Y.

AU - Liu, Z. Q.

AU - Liventsev, D.

AU - Lukin, P.

AU - Matvienko, D.

AU - Miyabayashi, K.

AU - Miyata, H.

AU - Mohanty, G. B.

AU - Moll, A.

AU - Mori, T.

AU - Muramatsu, N.

AU - Mussa, R.

AU - Nagasaka, Y.

AU - Nakano, E.

AU - Nakao, M.

AU - Natkaniec, Z.

AU - Nayak, M.

AU - Nedelkovska, E.

AU - Ng, C.

AU - Nisar, N. K.

AU - Nishida, S.

AU - Nitoh, O.

AU - Ogawa, S.

AU - Okuno, S.

AU - Olsen, S. L.

AU - Ostrowicz, W.

AU - Pakhlov, P.

AU - Park, C. W.

AU - Park, H.

AU - Park, H. K.

AU - Pedlar, T. K.

AU - Peng, T.

AU - Pestotnik, R.

AU - Petrič, M.

AU - Piilonen, L. E.

AU - Ritter, M.

AU - Röhrken, M.

AU - Rostomyan, A.

AU - Ryu, S.

AU - Sahoo, H.

AU - Saito, T.

AU - Sakai, Y.

AU - Sandilya, S.

AU - Santelj, L.

AU - Sanuki, T.

AU - Sato, Y.

AU - Savinov, V.

AU - Schneider, O.

AU - Schnell, G.

AU - Schwanda, C.

AU - Senyo, K.

AU - Seon, O.

AU - Shapkin, M.

AU - Shebalin, V.

AU - Shibata, T. A.

AU - Shiu, J. G.

AU - Shwartz, B.

AU - Sibidanov, A.

AU - Simon, F.

AU - Smerkol, P.

AU - Sohn, Y. S.

AU - Sokolov, A.

AU - Solovieva, E.

AU - Stanič, S.

AU - Starič, M.

AU - Steder, M.

AU - Sumihama, M.

AU - Sumiyoshi, T.

AU - Tamponi, U.

AU - Tanida, K.

AU - Tatishvili, G.

AU - Teramoto, Y.

AU - Tsuboyama, T.

AU - Uchida, M.

AU - Uehara, S.

AU - Unno, Y.

AU - Uno, S.

AU - Urquijo, P.

AU - Vahsen, S. E.

AU - Van Hulse, C.

AU - Vanhoefer, P.

AU - Varner, G.

AU - Vorobyev, V.

AU - Wagner, M. N.

AU - Wang, C. H.

AU - Wang, P.

AU - Wang, X. L.

AU - Watanabe, M.

AU - Watanabe, Y.

AU - Won, E.

AU - Yamamoto, H.

AU - Yamaoka, J.

AU - Yamashita, Y.

AU - Yashchenko, S.

AU - Yook, Y.

AU - Yusa, Y.

AU - Zhang, C. C.

AU - Zhang, Z. P.

AU - Zhilich, V.

AU - Zupanc, A.

PY - 2013/7/23

Y1 - 2013/7/23

N2 - Using samples of 102 million Υ(1S) and 158 million Υ(2S) events collected with the Belle detector, we study exclusive hadronic decays of these two bottomonium resonances to KS0K+π- and charge-conjugate (c.c.) states, π+π-π0π0, and π+π-π0, and to the two-body Vector-Pseudoscalar (K*(892)0K̄0+c.c., K*(892)-K ++c.c., ωπ0, and ρπ) final states. For the first time, signals are observed in the modes Υ(1S)→KS0K+π -+c.c., π+π-π0π0, and Υ(2S)→π+π-π0π0, and evidence is found for the modes Υ(1S)→π+π-π0, K*(892)0K̄0+c.c., and Υ(2S)→KS0K +π-+c.c. Branching fractions are measured for all the processes, while 90% confidence level upper limits on the branching fractions are also set for the modes with a statistical significance of less than 3σ. The ratios of the branching fractions of Υ(2S) and Υ(1S) decays into the same final state are used to test a perturbative QCD prediction for Okubo-Zweig-Iizuka-suppressed bottomonium decays.

AB - Using samples of 102 million Υ(1S) and 158 million Υ(2S) events collected with the Belle detector, we study exclusive hadronic decays of these two bottomonium resonances to KS0K+π- and charge-conjugate (c.c.) states, π+π-π0π0, and π+π-π0, and to the two-body Vector-Pseudoscalar (K*(892)0K̄0+c.c., K*(892)-K ++c.c., ωπ0, and ρπ) final states. For the first time, signals are observed in the modes Υ(1S)→KS0K+π -+c.c., π+π-π0π0, and Υ(2S)→π+π-π0π0, and evidence is found for the modes Υ(1S)→π+π-π0, K*(892)0K̄0+c.c., and Υ(2S)→KS0K +π-+c.c. Branching fractions are measured for all the processes, while 90% confidence level upper limits on the branching fractions are also set for the modes with a statistical significance of less than 3σ. The ratios of the branching fractions of Υ(2S) and Υ(1S) decays into the same final state are used to test a perturbative QCD prediction for Okubo-Zweig-Iizuka-suppressed bottomonium decays.

UR - http://www.scopus.com/inward/record.url?scp=84881335778&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.88.011102

DO - 10.1103/PhysRevD.88.011102

M3 - Article

AN - SCOPUS:84881335778

VL - 88

JO - Physical review D: Particles and fields

JF - Physical review D: Particles and fields

SN - 0556-2821

IS - 1

M1 - 011102

ER -

Measurement of exclusive Υ(1S) and Υ(2S) decays into vector-pseudoscalar final states

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