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Search for a dark vector gauge boson decaying to pi(+)pi(-) using eta ->pi(+)pi(-) gamma decays

Authors
Won, E.Adachi, I.Aihara, H.Al Said, S.Asner, D. M.Aushev, T.Ayad, R.Badhrees, I.Bakich, A. M.Bansal, V.Barberio, E.Behera, P.Bhuyan, B.Biswal, J.Bobrov, A.Bozek, A.Bracko, M.Cervenkov, D.Chekelian, V.Chen, A.Cheon, B. G.Chilikin, K.Chistov, R.Cho, K.Chobanova, V.Choi, Y.Cinabro, D.Dash, N.Di Carlo, S.Dolezal, Z.Drsal, Z.Dutta, D.Eidelman, S.Epifanov, D.Farhat, H.Fast, J. E.Ferber, T.Fulsom, B. G.Gaur, V.Gabyshev, N.Garmash, A.Gillard, R.Goldenzweig, P.Greenwald, D.Haba, J.Hayasaka, K.Hayashii, H.Hou, W. -S.Iijima, T.Inami, K.Inguglia, G.Ishikawa, A.Itoh, R.Iwasaki, Y.Jaegle, I.Jeon, H. B.Joffe, D.Joo, K. K.Julius, T.Kang, K. H.Kawasaki, T.Kim, D. Y.Kim, J. B.Kim, K. T.Kim, M. J.Kim, S. H.Kim, Y. J.Kinoshita, K.Kodys, P.Krizan, P.Krokovny, P.Kuhr, T.Kulasiri, R.Kwon, Y. -J.Lange, J. S.Lee, I. S.Li, C. H.Li, L.Li, Y.Gioi, L. LiLibby, J.Liventsev, D.Luo, T.Masuda, M.Matsuda, T.Matvienko, D.Miyabayashi, K.Miyata, H.Mizuk, R.Mohanty, G. B.Nakano, E.Nakao, M.Nakazawa, H.Nanut, T.Nath, K. J.Natkaniec, Z.Nayak, M.Nishida, S.Ogawa, S.Okuno, S.Pakhlov, P.Pal, B.Park, C. -S.Paul, S.Pedlar, T. K.Piilonen, L. E.Pulvermacher, C.Rauch, J.Ritter, M.Sahoo, H.Sakai, Y.Sandilya, S.Santelj, L.Sanuki, T.Sato, Y.Savinov, V.Schluter, T.Schneider, O.Schnell, G.Schwanda, C.Seino, Y.Semmler, D.Senyo, K.Seon, O.Seong, I. S.Shebalin, V.Shen, C. P.Shibata, T. -A.Shiu, J. -G.Simon, F.Staric, M.Sumiyoshi, T.Takizawa, M.Tamponi, U.Tenchini, F.Trabelsi, K.Uchida, M.Uehara, S.Uglov, T.Unno, Y.Uno, S.Urquijo, P.Usov, Y.Van Hulse, C.Varner, G.Varvell, K. E.Vorobyev, V.Wang, C. H.Wang, M. -Z.Watanabe, M.Watanabe, Y.Widmann, E.Yamaoka, J.Ye, H.Yook, Y.Yuan, C. Z.Yusa, Y.Zhang, Z. P.Zhilich, V.Zhukova, V.Zhulanov, V.Zupanc, A.
Issue Date
29-11월-2016
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW D, v.94, no.9
Indexed
SCIE
SCOPUS
Journal Title
PHYSICAL REVIEW D
Volume
94
Number
9
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/86793
DOI
10.1103/PhysRevD.94.092006
ISSN
2470-0010
Abstract
We report a search for a dark vector gauge boson U' that couples to quarks in the decay chain D*(+) -> D-0 pi(+), D-0 -> K-S(0) eta, eta -> U'gamma, U' -> pi(+)pi- No signal is found and we set a mass-dependent limit on the baryonic fine structure constant of 10(-3)-10(-2) in the U' mass range of 290 to 520 MeV/c(2). This analysis is based on a data sample of 976 fb(-1) collected by the Belle experiment at the KEKB asymmetric-energy e(+)e(-) collider.
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