Search for a dark vector gauge boson decaying to π+π- using η →π+π-γ decays

Won, E.; MIN-ZU WANG; 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., Bra?ko, M., ?ervenkov, 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., Dole?al, Z., Dr?sal, 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., Kody?, P., Kri?an, P., Krokovny, P., Kuhr, T., Kulasiri, R., Kwon, Y.-J., Lange, J.S., Lee, I.S., Li, C.H., Li, L., Li, Y., Li Gioi, L., Libby, 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., Schl?ter, 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., Stari?, 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.

doi:10.1103/PhysRevD.94.092006

Search for a dark vector gauge boson decaying to π+π- using η →π+π-γ decays

Journal

Physical Review D

Journal Volume

94

Journal Issue

9

Date Issued

2016

Author(s)

Won, E.

MIN-ZU WANG

DOI

10.1103/PhysRevD.94.092006

URI

https://scholars.lib.ntu.edu.tw/handle/123456789/440702

URL

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85002125592&doi=10.1103%2fPhysRevD.94.092006&partnerID=40&md5=eb7ef47746a69b3029b9077ee00856a0

Abstract

We report a search for a dark vector gauge boson U′ that couples to quarks in the decay chain D∗+→D0π+,D0→KS0η,η→U′γ, U′→π+π-. 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/c2. 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.

Type

journal article

Search for a dark vector gauge boson decaying to π+π- using η →π+π-γ decays

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