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Title: Search for B + → μ + ν μ and B + → μ + N with inclusive tagging

Abstract

We report the result for a search for the leptonic decay of B+ → μ+ νμ using the full Belle data set of 711 fb-1 of integrated luminosity at the Υ(4S) resonance. In the Standard Model leptonic B-meson decays are helicity and CKM 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 μ into the signal B meson rest-frame, in which the μ has a monochromatic momentum spectrum. Though its momentum is smeared by the experimental resolution, this technique improves the analysis sensitivity considerably. Analyzing the μ momentum spectrum in this frame we find B(B+ → μ+ νμ) = (5.3 ± 2.0 ± 0.9) × 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+ → μ+ νμ) < 8.6 × 10-7 at 90% CL. The experimental spectrum is then used to search for a massive sterile neutrino, B+ → μ+ N, but no evidence is observed for a sterile neutrino with a mass in a range of 0 - 1.5 GeV. Themore » determined B+ → μ+ νμ branching fraction limit is further used to constrain the mass and coupling space of the type II and type III two-Higgs-doublet models.« less

Authors:
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Publication Date:
Research Org.:
Univ. of Hawaii, Honolulu, HI (United States); Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP); National Science Foundation (NSF); Ministry of Education, Culture, Sports, Science and Technology; KEK - High Energy Accelerator Research Organization
Contributing Org.:
Belle Collaboration
OSTI Identifier:
1601082
Alternate Identifier(s):
OSTI ID: 1598822; OSTI ID: 1607359; OSTI ID: 1756627
Report Number(s):
BNL-213747-2020-JAAM
Journal ID: ISSN 2470-0010; PRVDAQ; 032007
Grant/Contract Number:  
SC0010504; SC0009973; SC0012704
Resource Type:
Published Article
Journal Name:
Physical Review D
Additional Journal Information:
Journal Name: Physical Review D Journal Volume: 101 Journal Issue: 3; Journal ID: ISSN 2470-0010
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; Determination of fundamental constants; Electroweak interaction; Extensions of Higgs sector; Lattice QCD; Leptonic, semileptonic & radiative decays; Quark mixing; Heavy neutrinos; Leptons; Mesons

Citation Formats

Prim, M. T., Bernlochner, F. U., Goldenzweig, P., Heck, M., Adachi, I., Adamczyk, K., Aihara, H., Al Said, S., Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Bakich, A. M., Bansal, V., Behera, P., Beleño, C., Bhardwaj, V., Bhuyan, B., Bilka, T., Biswal, J., Bobrov, A., Bozek, A., Bračko, M., Braun, N., Browder, T. E., Campajola, M., Cao, L., Červenkov, D., Chang, P., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, H. E., Cho, K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Doležal, Z., Eidelman, S., Epifanov, D., Fast, J. E., Ferber, T., Fulsom, B. G., Garg, R., Gaur, V., Garmash, A., Giri, A., Grzymkowska, O., Guan, Y., Haba, J., Hara, T., Hayasaka, K., Hayashii, H., Hou, W. -S., Iijima, 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., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kulasiri, R., Kumar, R., Kumita, T., Kuzmin, A., Kwon, Y. -J., Lalwani, 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. -C., Luo, 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. -H., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Popov, V., Prencipe, E., Ritter, M., Rostomyan, A., Rozanska, M., Russo, G., Sahoo, D., Sakai, Y., Santelj, L., Savinov, V., Schneider, O., Schnell, G., Schueler, J., Schwanda, C., Seino, Y., Senyo, K., Sevior, M. E., Shebalin, V., Shiu, J. -G., Shwartz, B., Simon, F., Sokolov, A., Solovieva, E., Starič, 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. -Z., Wang, P., Watanuki, S., Won, E., Yang, S. B., Ye, H., Yin, J. H., Yusa, Y., Zhang, Z. P., Zhilich, V., Zhukova, V., Zhulanov, V., and Belle Collaboration. Search for B + → μ + ν μ and B + → μ + N with inclusive tagging. United States: N. p., 2020. Web. doi:10.1103/PhysRevD.101.032007.
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Prim, M. T., Bernlochner, F. U., Goldenzweig, P., Heck, M., Adachi, I., Adamczyk, K., Aihara, H., Al Said, S., Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Bakich, A. M., Bansal, V., Behera, P., Beleño, C., Bhardwaj, V., Bhuyan, B., Bilka, T., Biswal, J., Bobrov, A., Bozek, A., Bračko, M., Braun, N., Browder, T. E., Campajola, M., Cao, L., Červenkov, D., Chang, P., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, H. E., Cho, K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Doležal, Z., Eidelman, S., Epifanov, D., Fast, J. E., Ferber, T., Fulsom, B. G., Garg, R., Gaur, V., Garmash, A., Giri, A., Grzymkowska, O., Guan, Y., Haba, J., Hara, T., Hayasaka, K., Hayashii, H., Hou, W. -S., Iijima, 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., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kulasiri, R., Kumar, R., Kumita, T., Kuzmin, A., Kwon, Y. -J., Lalwani, 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. -C., Luo, 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. -H., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Popov, V., Prencipe, E., Ritter, M., Rostomyan, A., Rozanska, M., Russo, G., Sahoo, D., Sakai, Y., Santelj, L., Savinov, V., Schneider, O., Schnell, G., Schueler, J., Schwanda, C., Seino, Y., Senyo, K., Sevior, M. E., Shebalin, V., Shiu, J. -G., Shwartz, B., Simon, F., Sokolov, A., Solovieva, E., Starič, 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. -Z., Wang, P., Watanuki, S., Won, E., Yang, S. B., Ye, H., Yin, J. H., Yusa, Y., Zhang, Z. P., Zhilich, V., Zhukova, V., Zhulanov, V., & Belle Collaboration. Search for B + → μ + ν μ and B + → μ + N with inclusive tagging. United States. doi:https://doi.org/10.1103/PhysRevD.101.032007
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Prim, M. T., Bernlochner, F. U., Goldenzweig, P., Heck, M., Adachi, I., Adamczyk, K., Aihara, H., Al Said, S., Asner, D. M., Atmacan, H., Aulchenko, V., Aushev, T., Ayad, R., Babu, V., Bakich, A. M., Bansal, V., Behera, P., Beleño, C., Bhardwaj, V., Bhuyan, B., Bilka, T., Biswal, J., Bobrov, A., Bozek, A., Bračko, M., Braun, N., Browder, T. E., Campajola, M., Cao, L., Červenkov, D., Chang, P., Chekelian, V., Chen, A., Cheon, B. G., Chilikin, K., Cho, H. E., Cho, K., Choi, Y., Choudhury, S., Cinabro, D., Cunliffe, S., Doležal, Z., Eidelman, S., Epifanov, D., Fast, J. E., Ferber, T., Fulsom, B. G., Garg, R., Gaur, V., Garmash, A., Giri, A., Grzymkowska, O., Guan, Y., Haba, J., Hara, T., Hayasaka, K., Hayashii, H., Hou, W. -S., Iijima, 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., Kodyš, P., Korpar, S., Kotchetkov, D., Križan, P., Kroeger, R., Krokovny, P., Kuhr, T., Kulasiri, R., Kumar, R., Kumita, T., Kuzmin, A., Kwon, Y. -J., Lalwani, 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. -C., Luo, 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. -H., Patra, S., Paul, S., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Popov, V., Prencipe, E., Ritter, M., Rostomyan, A., Rozanska, M., Russo, G., Sahoo, D., Sakai, Y., Santelj, L., Savinov, V., Schneider, O., Schnell, G., Schueler, J., Schwanda, C., Seino, Y., Senyo, K., Sevior, M. E., Shebalin, V., Shiu, J. -G., Shwartz, B., Simon, F., Sokolov, A., Solovieva, E., Starič, 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. -Z., Wang, P., Watanuki, S., Won, E., Yang, S. B., Ye, H., Yin, J. H., Yusa, Y., Zhang, Z. P., Zhilich, V., Zhukova, V., Zhulanov, V., and Belle Collaboration. Fri . "Search for B + → μ + ν μ and B + → μ + N with inclusive tagging". United States. doi:https://doi.org/10.1103/PhysRevD.101.032007.
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@article{osti_1601082,
title = {Search for B + → μ + ν μ and B + → μ + N with inclusive tagging},
author = {Prim, M. T. and Bernlochner, F. U. and Goldenzweig, P. and Heck, M. and Adachi, I. and Adamczyk, K. and Aihara, H. and Al Said, S. and Asner, D. M. and Atmacan, H. and Aulchenko, V. and Aushev, T. and Ayad, R. and Babu, V. and Bakich, A. M. and Bansal, V. and Behera, P. and Beleño, C. and Bhardwaj, V. and Bhuyan, B. and Bilka, T. and Biswal, J. and Bobrov, A. and Bozek, A. and Bračko, M. and Braun, N. and Browder, T. E. and Campajola, M. and Cao, L. and Červenkov, D. and Chang, P. and Chekelian, V. and Chen, A. and Cheon, B. G. and Chilikin, K. and Cho, H. E. and Cho, K. and Choi, Y. and Choudhury, S. and Cinabro, D. and Cunliffe, S. and Doležal, Z. and Eidelman, S. and Epifanov, D. and Fast, J. E. and Ferber, T. and Fulsom, B. G. and Garg, R. and Gaur, V. and Garmash, A. and Giri, A. and Grzymkowska, O. and Guan, Y. and Haba, J. and Hara, T. and Hayasaka, K. and Hayashii, H. and Hou, W. -S. and Iijima, T. and Inami, K. and Inguglia, G. and Ishikawa, A. and Iwasaki, M. and Iwasaki, Y. and Jia, S. and Jin, Y. and Joffe, D. and Joo, K. K. and Kaliyar, A. B. and Karyan, G. and Kawasaki, T. and Kichimi, H. and Kiesling, C. and Kim, C. H. and Kim, D. Y. and Kim, K. T. and Kim, S. H. and Kinoshita, K. and Kodyš, P. and Korpar, S. and Kotchetkov, D. and Križan, P. and Kroeger, R. and Krokovny, P. and Kuhr, T. and Kulasiri, R. and Kumar, R. and Kumita, T. and Kuzmin, A. and Kwon, Y. -J. and Lalwani, K. and Lange, J. S. and Lee, I. S. and Lee, J. K. and Lee, J. Y. and Lee, S. C. and Lewis, P. and Li, C. H. and Li Gioi, L. and Libby, J. and Lieret, K. and Liventsev, D. and Lu, P. -C. and Luo, T. and MacNaughton, J. and Masuda, M. and Matsuda, T. and Matvienko, D. and Merola, M. and Metzner, F. and Miyabayashi, K. and Mizuk, R. and Mohanty, G. B. and Mussa, R. and Nakao, M. and De Nardo, G. and Nath, K. J. and Natkaniec, Z. and Nayak, M. and Niiyama, M. and Nisar, N. K. and Nishida, S. and Nishimura, K. and Ogawa, S. and Ono, H. and Onuki, Y. and Pakhlov, P. and Pakhlova, G. and Pal, B. and Pardi, S. and Park, H. and Park, S. -H. and Patra, S. and Paul, S. and Pedlar, T. K. and Pestotnik, R. and Piilonen, L. E. and Popov, V. and Prencipe, E. and Ritter, M. and Rostomyan, A. and Rozanska, M. and Russo, G. and Sahoo, D. and Sakai, Y. and Santelj, L. and Savinov, V. and Schneider, O. and Schnell, G. and Schueler, J. and Schwanda, C. and Seino, Y. and Senyo, K. and Sevior, M. E. and Shebalin, V. and Shiu, J. -G. and Shwartz, B. and Simon, F. and Sokolov, A. and Solovieva, E. and Starič, M. and Strube, J. F. and Sumihama, M. and Sumiyoshi, T. and Sutcliffe, W. and Takizawa, M. and Tamponi, U. and Tao, Y. and Tenchini, F. and Trabelsi, K. and Uchida, M. and Uglov, T. and Unno, Y. and Uno, S. and Ushiroda, Y. and Usov, Y. and Vahsen, S. E. and Van Tonder, R. and Varner, G. and Varvell, K. E. and Vinokurova, A. and Wang, B. and Wang, C. H. and Wang, M. -Z. and Wang, P. and Watanuki, S. and Won, E. and Yang, S. B. and Ye, H. and Yin, J. H. and Yusa, Y. and Zhang, Z. P. and Zhilich, V. and Zhukova, V. and Zhulanov, V. and Belle Collaboration},
abstractNote = {We report the result for a search for the leptonic decay of B+ → μ+ νμ using the full Belle data set of 711 fb-1 of integrated luminosity at the Υ(4S) resonance. In the Standard Model leptonic B-meson decays are helicity and CKM 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 μ into the signal B meson rest-frame, in which the μ has a monochromatic momentum spectrum. Though its momentum is smeared by the experimental resolution, this technique improves the analysis sensitivity considerably. Analyzing the μ momentum spectrum in this frame we find B(B+ → μ+ νμ) = (5.3 ± 2.0 ± 0.9) × 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+ → μ+ νμ) < 8.6 × 10-7 at 90% CL. The experimental spectrum is then used to search for a massive sterile neutrino, B+ → μ+ N, but no evidence is observed for a sterile neutrino with a mass in a range of 0 - 1.5 GeV. The determined B+ → μ+ νμ branching fraction limit is further used to constrain the mass and coupling space of the type II and type III two-Higgs-doublet models.},
doi = {10.1103/PhysRevD.101.032007},
journal = {Physical Review D},
number = 3,
volume = 101,
place = {United States},
year = {2020},
month = {2}
}
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FastBDT: A Speed-Optimized Multivariate Classification Algorithm for the Belle II Experiment
journal, September 2017

Charged Higgs boson contribution to B q − → ℓ ν ¯ and B ¯ → ( P , V ) ℓ ν ¯ in a generic two-Higgs doublet model
journal, November 2018

Model-independent description of B → π l ν decays and a determination of | V u b |
journal, January 2009

High-energy-physics event generation with PYTHIA 5.7 and JETSET 7.4
journal, August 1994

Asymptotic formulae for likelihood-based tests of new physics
journal, February 2011

B → X u l bar nu l decay distributions to order α s
journal, June 1999

Study of B → π l ν and B → ρ l ν decays and determination of | V u b |
journal, February 2011

Measurement of Branching Fractions for B → π π , K π , and KK Decays
journal, August 2001

Overview of the KEKB accelerators
journal, February 2003

  • Kurokawa, S.; Kikutani, E.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 499, Issue 1
  • DOI: 10.1016/S0168-9002(02)01771-0

Search for Heavy Neutral Leptons in Events with Three Charged Leptons in Proton-Proton Collisions at s = 13     TeV
journal, May 2018

The Belle detector
journal, February 2002

  • Abashian, A.; Gotow, K.; Morgan, N.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 479, Issue 1
  • DOI: 10.1016/S0168-9002(01)02013-7

Electron identification in Belle
journal, June 2002

  • Hanagaki, K.; Kakuno, H.; Ikeda, H.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 485, Issue 3
  • DOI: 10.1016/S0168-9002(01)02113-1

Averages of b-hadron, c-hadron, and $$\tau $$ τ -lepton properties as of summer 2016
journal, December 2017

Search for heavy neutrino decays in the BEBC beam dump experiment
journal, October 1985

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