Search for a massive invisible particle X0 in B+ →e+X0 and B+ →μ+X0 decays

Park, C.-S.; MIN-ZU WANG; Park, C.-S., Kwon, Y.-J., Adachi, I., Aihara, H., Asner, D.M., Aushev, T., Babu, V., Badhrees, I., Bakich, A.M., Barberio, E., Behera, P., Bhardwaj, V., Biswal, J., Bonvicini, G., Bozek, A., Bra?ko, M., Browder, T.E., ?ervenkov, D., Chekelian, V., Chen, A., Cheon, B.G., Chilikin, K., Chistov, R., Cho, K., Chobanova, V., Choi, Y., Cinabro, D., Dalseno, J., Danilov, M., Dash, N., Dole?al, Z., Dutta, D., Eidelman, S., Farhat, H., Fast, J.E., Ferber, T., Fulsom, B.G., Gaur, V., Gabyshev, N., Garmash, A., Gillard, R., Goh, Y.M., Goldenzweig, P., Grzymkowska, O., Hara, T., Hayasaka, K., Hayashii, H., Heck, M., Hou, W.-S., Iijima, T., Inami, K., Inguglia, G., Ishikawa, A., Itoh, R., Iwasaki, Y., Jaegle, I., Jeon, H.B., Julius, T., Kang, K.H., Kato, E., Katrenko, P., Kim, D.Y., Kim, J.B., Kim, K.T., Kim, M.J., Kim, S.H., Kinoshita, K., Kody?, P., Korpar, S., Kri?an, P., Krokovny, P., Kuzmin, A., Lee, I.S., Li, C.H., Li, L., Li, Y., Li Gioi, L., Libby, J., Liventsev, D., Lubej, M., Lukin, P., Masuda, M., Matvienko, D., Miyabayashi, K., Miyata, H., Mizuk, R., Mohanty, G.B., Mohanty, S., Moll, A., Moon, H.K., Mussa, R., Nakano, E., Nakao, M., Nath, K.J., Nayak, M., Negishi, K., Nisar, N.K., Nishida, S., Ogawa, S., Okuno, S., Pakhlov, P., Pakhlova, G., Pal, B., Park, C.W., Park, H., Pedlar, T.K., Petri?, M., Piilonen, L.E., Pulvermacher, C., Purohit, M.V., Rauch, J., Ritter, M., Rostomyan, A., Ryu, S., Sakai, Y., Sandilya, S., Santelj, L., Sanuki, T., Sato, Y., Schl?ter, T., Schneider, O., Schnell, G., Schwanda, C., Schwartz, A.J., Seino, Y., Semmler, D., Senyo, K., Seon, O., Sevior, M.E., Shebalin, V., Shen, C.P., Shibata, T.-A., Shiu, J.-G., Shwartz, B., Simon, F., Sokolov, A., Stani?, S., Stari?, M., Stypula, J., Sumiyoshi, T., Tamponi, U., Teramoto, Y., Trabelsi, K., Uchida, M., Uglov, T., Unno, Y., Uno, S., Urquijo, P., Usov, Y., Van Hulse, C., Vanhoefer, P., Varner, G., Varvell, K.E., Wagner, M.N., Wang, C.H., Wang, M.-Z., Wang, P., Watanabe, Y., Won, E., Yamaoka, J., Yashchenko, S., Ye, H., Yook, Y., Yusa, Y., Zhang, Z.P., Zhilich, V., Zhulanov, V., Zupanc, A.

doi:10.1103/PhysRevD.94.012003

Search for a massive invisible particle X0 in B+ →e+X0 and B+ →μ+X0 decays

Journal

Physical Review D

Journal Volume

94

Journal Issue

1

Date Issued

2016

Author(s)

Park, C.-S.

MIN-ZU WANG

DOI

10.1103/PhysRevD.94.012003

URI

https://scholars.lib.ntu.edu.tw/handle/123456789/440709

URL

https://www.scopus.com/inward/record.uri?eid=2-s2.0-84979753504&doi=10.1103%2fPhysRevD.94.012003&partnerID=40&md5=27163db56cb020d0d97543606ebade33

Abstract

We present a search for a non-Standard-Model invisible particle X0 in the mass range 0.1-1.8 GeV/c2 in B+→e+X0 and B+→μ+X0 decays. The results are obtained from a 711 fb-1 data sample that corresponds to 772×106BB pairs, collected at the Ψ(4S) resonance with the Belle detector at the KEKB e+e- collider. One B meson is fully reconstructed in a hadronic mode to determine the momentum of the lepton of the signal decay in the rest frame of the recoiling partner B meson. We find no evidence of a signal and set upper limits on the order of 10-6.

Type

journal article

Search for a massive invisible particle X0 in B+ →e+X0 and B+ →μ+X0 decays

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