https://scholars.lib.ntu.edu.tw/handle/123456789/417990| Title: | Search for a massive invisible particle X0 in B+ →e+X0 and B+ →μ+X0 decays | Authors: | Chistov, R. Mussa, R. Inguglia, G. Park, C. S. Bozek, A. Nisar, N. K. Bra?ko, M. Badhrees, I. Dole?al, Z. Miyabayashi, K. Adachi, I. Aushev, T. Dutta, D. Kim, K. T. Iijima, T. Chen, A. Kri?an, P. Kim, J. B. Mohanty, G. B. ?ervenkov, D. Aihara, H. Julius, T. Biswal, J. Babu, V. Chekelian, V. Chilikin, K. Ishikawa, A. Lukin, P. Kim, M. J. |
Issue Date: | 18-Jul-2016 | Journal Volume: | 94 | Journal Issue: | 1 | Source: | Physical Review D | Abstract: | © 2016 American Physical Society. 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. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/417990 | ISSN: | 24700010 | DOI: | 10.1103/PhysRevD.94.012003 |
| Appears in Collections: | 物理學系 |
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