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Title: Search for the lepton flavour violating decay $$\mu ^+ \rightarrow \mathrm {e}^+ \gamma $$ with the full dataset of the MEG experiment: MEG Collaboration

Abstract

Our final results of the search for the lepton flavour violating decay μ+→e+γ based on the full dataset collected by the MEG experiment at the Paul Scherrer Institut in the period 2009–2013 and totalling 7.5×1014 stopped muons on target are presented. Furthermore, there was not a significant excess of events observed in the dataset with respect to the expected background and a new upper limit on the branching ratio of this decay of B(μ+→e+γ)<4.2×10-13 (90 % confidence level) is established, which represents the most stringent limit on the existence of this decay to date.

Authors:
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Publication Date:
Research Org.:
Univ. of California, Irvine, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
Contributing Org.:
MEG Collaboration
OSTI Identifier:
1361508
Grant/Contract Number:  
FG02-91ER40679
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
European Physical Journal. C, Particles and Fields
Additional Journal Information:
Journal Volume: 76; Journal Issue: 8; Journal ID: ISSN 1434-6044
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Baldini, A. M., Bao, Y., Baracchini, E., Bemporad, C., Berg, F., Biasotti, M., Boca, G., Cascella, M., Cattaneo, P. W., Cavoto, G., Cei, F., Cerri, C., Chiarello, G., Chiri, C., Corvaglia, A., de Bari, A., De Gerone, M., Doke, T., D’Onofrio, A., Dussoni, S., Egger, J., Fujii, Y., Galli, L., Gatti, F., Grancagnolo, F., Grassi, M., Graziosi, A., Grigoriev, D. N., Haruyama, T., Hildebrandt, M., Hodge, Z., Ieki, K., Ignatov, F., Iwamoto, T., Kaneko, D., Kang, T. I., Kettle, P. -R., Khazin, B. I., Khomutov, N., Korenchenko, A., Kravchuk, N., Lim, G. M. A., Maki, A., Mihara, S., Molzon, W., Mori, Toshinori, Morsani, F., Mtchedilishvili, A., Mzavia, D., Nakaura, S., Nardò, R., Nicolò, D., Nishiguchi, H., Nishimura, M., Ogawa, S., Ootani, W., Orito, S., Panareo, M., Papa, A., Pazzi, R., Pepino, A., Piredda, G., Pizzigoni, G., Popov, A., Raffaelli, F., Renga, F., Ripiccini, E., Ritt, S., Rossella, M., Rutar, G., Sawada, R., Sergiampietri, F., Signorelli, G., Simonetta, M., Tassielli, G. F., Tenchini, F., Uchiyama, Y., Venturini, M., Voena, C., Yamamoto, A., Yoshida, K., You, Z., Yudin, Yu. V., and Zanello, D. Search for the lepton flavour violating decay $\mu ^+ \rightarrow \mathrm {e}^+ \gamma $ with the full dataset of the MEG experiment: MEG Collaboration. United States: N. p., 2016. Web. doi:10.1140/epjc/s10052-016-4271-x.
Baldini, A. M., Bao, Y., Baracchini, E., Bemporad, C., Berg, F., Biasotti, M., Boca, G., Cascella, M., Cattaneo, P. W., Cavoto, G., Cei, F., Cerri, C., Chiarello, G., Chiri, C., Corvaglia, A., de Bari, A., De Gerone, M., Doke, T., D’Onofrio, A., Dussoni, S., Egger, J., Fujii, Y., Galli, L., Gatti, F., Grancagnolo, F., Grassi, M., Graziosi, A., Grigoriev, D. N., Haruyama, T., Hildebrandt, M., Hodge, Z., Ieki, K., Ignatov, F., Iwamoto, T., Kaneko, D., Kang, T. I., Kettle, P. -R., Khazin, B. I., Khomutov, N., Korenchenko, A., Kravchuk, N., Lim, G. M. A., Maki, A., Mihara, S., Molzon, W., Mori, Toshinori, Morsani, F., Mtchedilishvili, A., Mzavia, D., Nakaura, S., Nardò, R., Nicolò, D., Nishiguchi, H., Nishimura, M., Ogawa, S., Ootani, W., Orito, S., Panareo, M., Papa, A., Pazzi, R., Pepino, A., Piredda, G., Pizzigoni, G., Popov, A., Raffaelli, F., Renga, F., Ripiccini, E., Ritt, S., Rossella, M., Rutar, G., Sawada, R., Sergiampietri, F., Signorelli, G., Simonetta, M., Tassielli, G. F., Tenchini, F., Uchiyama, Y., Venturini, M., Voena, C., Yamamoto, A., Yoshida, K., You, Z., Yudin, Yu. V., & Zanello, D. Search for the lepton flavour violating decay $\mu ^+ \rightarrow \mathrm {e}^+ \gamma $ with the full dataset of the MEG experiment: MEG Collaboration. United States. doi:10.1140/epjc/s10052-016-4271-x.
Baldini, A. M., Bao, Y., Baracchini, E., Bemporad, C., Berg, F., Biasotti, M., Boca, G., Cascella, M., Cattaneo, P. W., Cavoto, G., Cei, F., Cerri, C., Chiarello, G., Chiri, C., Corvaglia, A., de Bari, A., De Gerone, M., Doke, T., D’Onofrio, A., Dussoni, S., Egger, J., Fujii, Y., Galli, L., Gatti, F., Grancagnolo, F., Grassi, M., Graziosi, A., Grigoriev, D. N., Haruyama, T., Hildebrandt, M., Hodge, Z., Ieki, K., Ignatov, F., Iwamoto, T., Kaneko, D., Kang, T. I., Kettle, P. -R., Khazin, B. I., Khomutov, N., Korenchenko, A., Kravchuk, N., Lim, G. M. A., Maki, A., Mihara, S., Molzon, W., Mori, Toshinori, Morsani, F., Mtchedilishvili, A., Mzavia, D., Nakaura, S., Nardò, R., Nicolò, D., Nishiguchi, H., Nishimura, M., Ogawa, S., Ootani, W., Orito, S., Panareo, M., Papa, A., Pazzi, R., Pepino, A., Piredda, G., Pizzigoni, G., Popov, A., Raffaelli, F., Renga, F., Ripiccini, E., Ritt, S., Rossella, M., Rutar, G., Sawada, R., Sergiampietri, F., Signorelli, G., Simonetta, M., Tassielli, G. F., Tenchini, F., Uchiyama, Y., Venturini, M., Voena, C., Yamamoto, A., Yoshida, K., You, Z., Yudin, Yu. V., and Zanello, D. Wed . "Search for the lepton flavour violating decay $\mu ^+ \rightarrow \mathrm {e}^+ \gamma $ with the full dataset of the MEG experiment: MEG Collaboration". United States. doi:10.1140/epjc/s10052-016-4271-x. https://www.osti.gov/servlets/purl/1361508.
@article{osti_1361508,
title = {Search for the lepton flavour violating decay $\mu ^+ \rightarrow \mathrm {e}^+ \gamma $ with the full dataset of the MEG experiment: MEG Collaboration},
author = {Baldini, A. M. and Bao, Y. and Baracchini, E. and Bemporad, C. and Berg, F. and Biasotti, M. and Boca, G. and Cascella, M. and Cattaneo, P. W. and Cavoto, G. and Cei, F. and Cerri, C. and Chiarello, G. and Chiri, C. and Corvaglia, A. and de Bari, A. and De Gerone, M. and Doke, T. and D’Onofrio, A. and Dussoni, S. and Egger, J. and Fujii, Y. and Galli, L. and Gatti, F. and Grancagnolo, F. and Grassi, M. and Graziosi, A. and Grigoriev, D. N. and Haruyama, T. and Hildebrandt, M. and Hodge, Z. and Ieki, K. and Ignatov, F. and Iwamoto, T. and Kaneko, D. and Kang, T. I. and Kettle, P. -R. and Khazin, B. I. and Khomutov, N. and Korenchenko, A. and Kravchuk, N. and Lim, G. M. A. and Maki, A. and Mihara, S. and Molzon, W. and Mori, Toshinori and Morsani, F. and Mtchedilishvili, A. and Mzavia, D. and Nakaura, S. and Nardò, R. and Nicolò, D. and Nishiguchi, H. and Nishimura, M. and Ogawa, S. and Ootani, W. and Orito, S. and Panareo, M. and Papa, A. and Pazzi, R. and Pepino, A. and Piredda, G. and Pizzigoni, G. and Popov, A. and Raffaelli, F. and Renga, F. and Ripiccini, E. and Ritt, S. and Rossella, M. and Rutar, G. and Sawada, R. and Sergiampietri, F. and Signorelli, G. and Simonetta, M. and Tassielli, G. F. and Tenchini, F. and Uchiyama, Y. and Venturini, M. and Voena, C. and Yamamoto, A. and Yoshida, K. and You, Z. and Yudin, Yu. V. and Zanello, D.},
abstractNote = {Our final results of the search for the lepton flavour violating decay μ+→e+γ based on the full dataset collected by the MEG experiment at the Paul Scherrer Institut in the period 2009–2013 and totalling 7.5×1014 stopped muons on target are presented. Furthermore, there was not a significant excess of events observed in the dataset with respect to the expected background and a new upper limit on the branching ratio of this decay of B(μ+→e+γ)<4.2×10-13 (90 % confidence level) is established, which represents the most stringent limit on the existence of this decay to date.},
doi = {10.1140/epjc/s10052-016-4271-x},
journal = {European Physical Journal. C, Particles and Fields},
number = 8,
volume = 76,
place = {United States},
year = {Wed Aug 03 00:00:00 EDT 2016},
month = {Wed Aug 03 00:00:00 EDT 2016}
}

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