Measurement of Inner Bremsstrahlung in Polarized Muon Decay with MEG

J. Adam; X. Bai; A. M. Baldini; E. Baracchini; C. Bemporad; G. Boca; P. W. Cattaneo; G. Cavoto; F. Cei; C. Cerri; A. de Bari; M. De Gerone; T. Doke; S. Dussoni; J. Egger; K. Fratini; Y. Fujii; G. Galli; L. Gallucci; F. Gatti; B. Golden; M. Grassi; D. N. Grigoriev; T. Haruyama; M. Hildebrandt; Y. Hisamatsu; F. Ignatov; T. Iwamoto; P. R. Kettle; B. I. Khazin; O. Kiselev; A. Korenchenko; N. Kravchuk; A. Maki; S. Mihara; W. Molzon; T. Mori; D. Mzavia; H. Natori; D. Nicolò; H. Nishiguchi; Y. Nishimura; W. Ootani; M. Panareo; A. Papa; R. Pazzi; G. Piredda; A. Popov; F. Renga; S. Ritt; M. Rossella; R. Sawada; F. Sergiampietri; G. Signorelli; S. Suzuki; F. Tenchini; C. Topchyan; Y. Uchiyama; R. Valle; C. Voena; F. Xiao; S. Yamada; A. Yamamoto; S. Yamashita; Yu V. Yudin; D. Zanello

doi:10.1016/j.nuclphysbps.2014.02.019

Measurement of Inner Bremsstrahlung in Polarized Muon Decay with MEG

J. Adam, X. Bai, A. M. Baldini, E. Baracchini, C. Bemporad, G. Boca, P. W. Cattaneo, G. Cavoto, F. Cei, C. Cerri, A. de Bari, M. De Gerone, T. Doke, S. Dussoni, J. Egger, K. Fratini, Y. Fujii, G. Galli, L. Gallucci, F. GattiB. Golden, M. Grassi, D. N. Grigoriev, T. Haruyama, M. Hildebrandt, Y. Hisamatsu, F. Ignatov, T. Iwamoto, P. R. Kettle, B. I. Khazin, O. Kiselev, A. Korenchenko, N. Kravchuk, A. Maki, S. Mihara, W. Molzon, T. Mori, D. Mzavia, H. Natori, D. Nicolò, H. Nishiguchi, Y. Nishimura, W. Ootani, M. Panareo, A. Papa, R. Pazzi, G. Piredda, A. Popov, F. Renga, S. Ritt, M. Rossella, R. Sawada, F. Sergiampietri, G. Signorelli, S. Suzuki, F. Tenchini, C. Topchyan, Y. Uchiyama, R. Valle, C. Voena, F. Xiao, S. Yamada, A. Yamamoto, S. Yamashita, Yu V. Yudin, D. Zanello

研究成果: Article › 査読

抄録

A muon decay accompanied by a photon through the inner Bremmstrahlung process (μ→eνν-γ, radiative muon decay) produces a time-correlated pair of positron and photon which becomes one of the main backgrounds in the search for μ→. eγ decay. This channel is also an important probe of timing calibration and cross-check of whole the experiment. We identified a large sample (~ 13000) of radiative muon decays in MEG data sample. The measured branching ratio in a region of interest in the μ→. eγ search is consistent with the standard model prediction. It is also the first measurement of the decay from polarized muons. The precision measurement of this mode enables us to use it as one of the normalization channels of μ→. eγ decay successfully reducing its uncertainty to less than 5%.

本文言語	English
ページ（範囲）	108-111
ページ数	4
ジャーナル	Nuclear Physics B - Proceedings Supplements
巻	248-250
DOI	https://doi.org/10.1016/j.nuclphysbps.2014.02.019
出版ステータス	Published - 2014
外部発表	はい

ASJC Scopus subject areas

原子分子物理学および光学
核物理学および高エネルギー物理学

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10.1016/j.nuclphysbps.2014.02.019

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Adam, J., Bai, X., Baldini, A. M., Baracchini, E., Bemporad, C., Boca, G., Cattaneo, P. W., Cavoto, G., Cei, F., Cerri, C., de Bari, A., De Gerone, M., Doke, T., Dussoni, S., Egger, J., Fratini, K., Fujii, Y., Galli, G., Gallucci, L., ... Zanello, D. (2014). Measurement of Inner Bremsstrahlung in Polarized Muon Decay with MEG. Nuclear Physics B - Proceedings Supplements, 248-250, 108-111. https://doi.org/10.1016/j.nuclphysbps.2014.02.019

Adam, J, Bai, X, Baldini, AM, Baracchini, E, Bemporad, C, Boca, G, Cattaneo, PW, Cavoto, G, Cei, F, Cerri, C, de Bari, A, De Gerone, M, Doke, T, Dussoni, S, Egger, J, Fratini, K, Fujii, Y, Galli, G, Gallucci, L, Gatti, F, Golden, B, Grassi, M, Grigoriev, DN, Haruyama, T, Hildebrandt, M, Hisamatsu, Y, Ignatov, F, Iwamoto, T, Kettle, PR, Khazin, BI, Kiselev, O, Korenchenko, A, Kravchuk, N, Maki, A, Mihara, S, Molzon, W, Mori, T, Mzavia, D, Natori, H, Nicolò, D, Nishiguchi, H, Nishimura, Y, Ootani, W, Panareo, M, Papa, A, Pazzi, R, Piredda, G, Popov, A, Renga, F, Ritt, S, Rossella, M, Sawada, R, Sergiampietri, F, Signorelli, G, Suzuki, S, Tenchini, F, Topchyan, C, Uchiyama, Y, Valle, R, Voena, C, Xiao, F, Yamada, S, Yamamoto, A, Yamashita, S, Yudin, YV & Zanello, D 2014, 'Measurement of Inner Bremsstrahlung in Polarized Muon Decay with MEG', Nuclear Physics B - Proceedings Supplements, vol. 248-250, pp. 108-111. https://doi.org/10.1016/j.nuclphysbps.2014.02.019

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title = "Measurement of Inner Bremsstrahlung in Polarized Muon Decay with MEG",

abstract = "A muon decay accompanied by a photon through the inner Bremmstrahlung process (μ→eνν-γ, radiative muon decay) produces a time-correlated pair of positron and photon which becomes one of the main backgrounds in the search for μ→. eγ decay. This channel is also an important probe of timing calibration and cross-check of whole the experiment. We identified a large sample (~ 13000) of radiative muon decays in MEG data sample. The measured branching ratio in a region of interest in the μ→. eγ search is consistent with the standard model prediction. It is also the first measurement of the decay from polarized muons. The precision measurement of this mode enables us to use it as one of the normalization channels of μ→. eγ decay successfully reducing its uncertainty to less than 5%.",

author = "J. Adam and X. Bai and Baldini, {A. M.} and E. Baracchini and C. Bemporad and G. Boca and Cattaneo, {P. W.} and G. Cavoto and F. Cei and C. Cerri and {de Bari}, A. and {De Gerone}, M. and T. Doke and S. Dussoni and J. Egger and K. Fratini and Y. Fujii and G. Galli and L. Gallucci and F. Gatti and B. Golden and M. Grassi and Grigoriev, {D. N.} and T. Haruyama and M. Hildebrandt and Y. Hisamatsu and F. Ignatov and T. Iwamoto and Kettle, {P. R.} and Khazin, {B. I.} and O. Kiselev and A. Korenchenko and N. Kravchuk and A. Maki and S. Mihara and W. Molzon and T. Mori and D. Mzavia and H. Natori and D. Nicol{\`o} and H. Nishiguchi and Y. Nishimura and W. Ootani and M. Panareo and A. Papa and R. Pazzi and G. Piredda and A. Popov and F. Renga and S. Ritt and M. Rossella and R. Sawada and F. Sergiampietri and G. Signorelli and S. Suzuki and F. Tenchini and C. Topchyan and Y. Uchiyama and R. Valle and C. Voena and F. Xiao and S. Yamada and A. Yamamoto and S. Yamashita and Yudin, {Yu V.} and D. Zanello",

year = "2014",

doi = "10.1016/j.nuclphysbps.2014.02.019",

language = "English",

volume = "248-250",

pages = "108--111",

journal = "Nuclear and Particle Physics Proceedings",

issn = "2405-6014",

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T1 - Measurement of Inner Bremsstrahlung in Polarized Muon Decay with MEG

AU - Adam, J.

AU - Bai, X.

AU - Baldini, A. M.

AU - Baracchini, E.

AU - Bemporad, C.

AU - Boca, G.

AU - Cattaneo, P. W.

AU - Cavoto, G.

AU - Cei, F.

AU - Cerri, C.

AU - de Bari, A.

AU - De Gerone, M.

AU - Doke, T.

AU - Dussoni, S.

AU - Egger, J.

AU - Fratini, K.

AU - Fujii, Y.

AU - Galli, G.

AU - Gallucci, L.

AU - Gatti, F.

AU - Golden, B.

AU - Grassi, M.

AU - Grigoriev, D. N.

AU - Haruyama, T.

AU - Hildebrandt, M.

AU - Hisamatsu, Y.

AU - Ignatov, F.

AU - Iwamoto, T.

AU - Kettle, P. R.

AU - Khazin, B. I.

AU - Kiselev, O.

AU - Korenchenko, A.

AU - Kravchuk, N.

AU - Maki, A.

AU - Mihara, S.

AU - Molzon, W.

AU - Mori, T.

AU - Mzavia, D.

AU - Natori, H.

AU - Nicolò, D.

AU - Nishiguchi, H.

AU - Nishimura, Y.

AU - Ootani, W.

AU - Panareo, M.

AU - Papa, A.

AU - Pazzi, R.

AU - Piredda, G.

AU - Popov, A.

AU - Renga, F.

AU - Ritt, S.

AU - Rossella, M.

AU - Sawada, R.

AU - Sergiampietri, F.

AU - Signorelli, G.

AU - Suzuki, S.

AU - Tenchini, F.

AU - Topchyan, C.

AU - Uchiyama, Y.

AU - Valle, R.

AU - Voena, C.

AU - Xiao, F.

AU - Yamada, S.

AU - Yamamoto, A.

AU - Yamashita, S.

AU - Yudin, Yu V.

AU - Zanello, D.

PY - 2014

Y1 - 2014

N2 - A muon decay accompanied by a photon through the inner Bremmstrahlung process (μ→eνν-γ, radiative muon decay) produces a time-correlated pair of positron and photon which becomes one of the main backgrounds in the search for μ→. eγ decay. This channel is also an important probe of timing calibration and cross-check of whole the experiment. We identified a large sample (~ 13000) of radiative muon decays in MEG data sample. The measured branching ratio in a region of interest in the μ→. eγ search is consistent with the standard model prediction. It is also the first measurement of the decay from polarized muons. The precision measurement of this mode enables us to use it as one of the normalization channels of μ→. eγ decay successfully reducing its uncertainty to less than 5%.

AB - A muon decay accompanied by a photon through the inner Bremmstrahlung process (μ→eνν-γ, radiative muon decay) produces a time-correlated pair of positron and photon which becomes one of the main backgrounds in the search for μ→. eγ decay. This channel is also an important probe of timing calibration and cross-check of whole the experiment. We identified a large sample (~ 13000) of radiative muon decays in MEG data sample. The measured branching ratio in a region of interest in the μ→. eγ search is consistent with the standard model prediction. It is also the first measurement of the decay from polarized muons. The precision measurement of this mode enables us to use it as one of the normalization channels of μ→. eγ decay successfully reducing its uncertainty to less than 5%.

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U2 - 10.1016/j.nuclphysbps.2014.02.019

DO - 10.1016/j.nuclphysbps.2014.02.019

M3 - Article

AN - SCOPUS:84899936181

SN - 2405-6014

VL - 248-250

SP - 108

EP - 111

JO - Nuclear and Particle Physics Proceedings

JF - Nuclear and Particle Physics Proceedings

ER -

Measurement of Inner Bremsstrahlung in Polarized Muon Decay with MEG

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