Search for B+ -> mu(+)nu(mu) and B+ -> mu N+ with inclusive tagging

Search for B+ → μ + νμ and B+ → μ + N with inclusive tagging
  • Prim, M. T.
  • Bernlochner, F. U.
  • Prim, F. U. M. T.
  • Goldenzweig, P.
  • Heck, M.
  • ... Cheon, B. G.
  • 외 190명
Citations

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31

초록

We report the result for a search for the leptonic decay of B+ -> mu(+)nu mu using the full Belle dataset of 711 fb(-1) of integrated luminosity at the gamma(4S) resonance. In the Standard Model leptonic B-meson decays are helicity and Cabibbo-Kobayashi-Maskawa suppressed. To maximize sensitivity an inclusive tagging approach is used to reconstruct the second B meson produced in the collision. The directional information from this second B meson is used to boost the observed mu into the signal B-meson rest frame, in which the mu has a monochromatic momentum spectrum. Though its momentum is smeared by the experimental resolution, this technique improves the analysis sensitivity considerably. Analyzing the mu momentum spectrum in this frame we find B(B+ -> mu(+)nu mu)=(5.3 +/- 2.0 +/- 0.9) x 10(-7) with a one-sided significance of 2.8 standard deviations over the background-only hypothesis. This translates to a frequentist upper limit of B(B+ -> mu(+)nu mu) < 8.6 x 10(-7) at 90% confidence level. The experimental spectrum is then used to search for a massive sterile neutrino, B+ -> mu N+, but no evidence is observed for a sterile neutrino with a mass in a range of 01.5 GeV. The determined B+ -> mu(+)nu mu branching fraction limit is further used to constrain the mass and coupling space of the type II and type III two-Higgs-doublet models.

키워드

NEUTRAL HEAVY-LEPTONSCB-VERTICAL-BARDECAYSIDENTIFICATIONLIMITSMODEL
제목
Search for B+ -> mu(+)nu(mu) and B+ -> mu N+ with inclusive tagging
제목 (타언어)
Search for B+ → μ + νμ and B+ → μ + N with inclusive tagging
저자
Prim, M. T.Bernlochner, F. U.Prim, F. U. M. T.Goldenzweig, P.Heck, M.Adachi, IAdamczyk, K.Aihara, H.Al Said, S.Asner, D. M.Atmacan, H.Aulchenko, VAushev, T.Ayad, R.Babu, VBakich, A. M.Bansal, VBehera, P.Beleno, C.Bhardwaj, VBhuyan, B.Bilka, T.Biswal, J.Bobrov, A.Bozek, A.Bracko, M.Braun, N.Browder, T. E.Campajola, M.Cao, L.Cervenkov, D.Chang, P.Chekelian, VChen, A.Cheon, B. G.Chilikin, K.Cho, H. E.Cho, K.Choi, Y.Choudhury, S.Cinabro, D.Cunliffe, S.Dolezal, Z.Eidelman, S.Epifanov, D.Fast, J. E.Ferber, T.Fulsom, B. G.Garg, R.Gaur, VGarmash, A.Giri, A.Grzymkowska, O.Guan, Y.Haba, J.Hara, T.Hayasaka, K.Hayashii, H.Hou, W-SIijima, T.Inami, K.Inguglia, G.Ishikawa, A.Iwasaki, M.Iwasaki, Y.Jia, S.Jin, Y.Joffe, D.Joo, K. K.Kaliyar, A. B.Karyan, G.Kawasaki, T.Kichimi, H.Kiesling, C.Kim, C. H.Kim, D. Y.Kim, K. T.Kim, S. H.Kinoshita, K.Kody, P.Korpar, S.Kotchetkov, D.Krizan, P.Kroeger, R.Krokovny, P.Kuhr, T.Kulasiri, R.Kumar, R.Kumita, T.Kuzmin, A.Kwon, Y-JLalwani, K.Lange, J. S.Lee, I. S.Lee, J. K.Lee, J. Y.Lee, S. C.Lewis, P.Li, C. H.Li Gioi, L.Libby, J.Lieret, K.Liventsev, D.Lu, P-CLuo, T.MacNaughton, J.Masuda, M.Matsuda, T.Matvienko, D.Merola, M.Metzner, F.Miyabayashi, K.Mizuk, R.Mohanty, G. B.Mussa, R.Nakao, M.De Nardo, G.Nath, K. J.Natkaniec, Z.Nayak, M.Niiyama, M.Nisar, N. K.Nishida, S.Nishimura, K.Ogawa, S.Ono, H.Onuki, Y.Pakhlov, P.Pakhlova, G.Pal, B.Pardi, S.Park, H.Park, S-HPatra, S.Paul, S.Pedlar, T. K.Pestotnik, R.Piilonen, L. E.Popov, VPrencipe, E.Ritter, M.Rostomyan, A.Rozanska, M.Russo, G.Sahoo, D.Sakai, Y.Santelj, L.Savinov, VSchneider, O.Schnell, G.Schueler, J.Schwanda, C.Seino, Y.Senyo, K.Sevior, M. E.Shebalin, VShiu, J-GShwartz, B.Simon, F.Sokolov, A.Solovieva, E.Staric, M.Strube, J. F.Sumihama, M.Sumiyoshi, T.Sutcliffe, W.Takizawa, M.Tamponi, U.Tao, Y.Tenchini, F.Trabelsi, K.Uchida, M.Uglov, T.Unno, Y.Uno, S.Ushiroda, Y.Usov, Y.Vahsen, S. E.Van Tonder, R.Varner, G.Varvell, K. E.Vinokurova, A.Wang, B.Wang, C. H.Wang, M-ZWang, P.Watanuki, S.Won, E.Yang, S. B.Ye, H.Yin, J. H.Yusa, Y.Zhang, Z. P.Zhilich, VZhukova, VZhulanov, V
DOI
10.1103/PhysRevD.101.032007
발행일
2020-02
유형
Article
저널명
Physical Review d
101
3
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