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Search for the lepton-flavour-violating decays $B^{0}_{s}\toτ^{\pm}μ^{\mp}$ and $B^{0}\toτ^{\pm}μ^{\mp}$

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Title: Search for the lepton-flavour-violating decays $B^{0}_{s}\toτ^{\pm}μ^{\mp}$ and $B^{0}\toτ^{\pm}μ^{\mp}$
Authors: Collaboration, L
Aaij, R
Beteta, CA
Adeva, B
Adinolfi, M
Aidala, CA
Ajaltouni, Z
Akar, S
Albicocco, P
Albrecht, J
Alessio, F
Alexander, M
Albero, AA
Alkhazov, G
Cartelle, PA
Jr, AAA
Amato, S
Amhis, Y
An, L
Anderlini, L
Andreassi, G
Andreotti, M
Andrews, JE
Archilli, F
Romeu, JA
Artamonov, A
Artuso, M
Arzymatov, K
Aslanides, E
Atzeni, M
Audurier, B
Bachmann, S
Back, JJ
Baker, S
Balagura, V
Baldini, W
Baranov, A
Barlow, RJ
Barsuk, S
Barter, W
Bartolini, M
Baryshnikov, F
Batozskaya, V
Batsukh, B
Battig, A
Battista, V
Bay, A
Bedeschi, F
Bediaga, I
Beiter, A
Bel, LJ
Belavin, V
Belin, S
Beliy, N
Bellee, V
Belous, K
Belyaev, I
Bencivenni, G
Ben-Haim, E
Benson, S
Beranek, S
Berezhnoy, A
Bernet, R
Berninghoff, D
Bertholet, E
Bertolin, A
Betancourt, C
Betti, F
Bettler, MO
Bezshyiko, I
Bhasin, S
Bhom, J
Bieker, MS
Bifani, S
Billoir, P
Birnkraut, A
Bizzeti, A
Bjørn, M
Blago, MP
Blake, T
Blanc, F
Blusk, S
Bobulska, D
Bocci, V
Garcia, OB
Boettcher, T
Bondar, A
Bondar, N
Borghi, S
Borisyak, M
Borsato, M
Boubdir, M
Bowcock, TJV
Bozzi, C
Braun, S
Rodriguez, AB
Brodski, M
Brodzicka, J
Gonzalo, AB
Brundu, D
Buchanan, E
Buonaura, A
Burr, C
Bursche, A
Butter, JS
Buytaert, J
Byczynski, W
Cadeddu, S
Cai, H
Calabrese, R
Cali, S
Calladine, R
Calvi, M
Gomez, MC
Camboni, A
Campana, P
Perez, DHC
Capriotti, L
Carbone, A
Carboni, G
Cardinale, R
Cardini, A
Carniti, P
Akiba, KC
Vidal, AC
Casse, G
Cattaneo, M
Cavallero, G
Cenci, R
Chapman, MG
Charles, M
Charpentier, P
Chatzikonstantinidis, G
Chefdeville, M
Chekalina, V
Chen, C
Chen, S
Chitic, S-G
Chobanova, V
Chrzaszcz, M
Chubykin, A
Ciambrone, P
Vidal, XC
Ciezarek, G
Cindolo, F
Clarke, PEL
Clemencic, M
Cliff, HV
Closier, J
Cobbledick, JL
Coco, V
Coelho, JAB
Cogan, J
Cogneras, E
Cojocariu, L
Collins, P
Colombo, T
Comerma-Montells, A
Contu, A
Coombs, G
Coquereau, S
Corti, G
Sobral, CMC
Couturier, B
Cowan, GA
Craik, DC
Crocombe, A
Torres, MC
Currie, R
Silva, CLD
Dall'Occo, E
Dalseno, J
D'Ambrosio, C
Danilina, A
D'Argent, P
Davis, A
Francisco, ODA
Bruyn, KD
Capua, SD
Cian, MD
Miranda, JMD
Paula, LD
Serio, MD
Simone, PD
Vries, JAD
Dean, CT
Dean, W
Decamp, D
Buono, LD
Delaney, B
Dembinski, H-P
Demmer, M
Dendek, A
Derkach, D
Deschamps, O
Desse, F
Dettori, F
Dey, B
Canto, AD
Nezza, PD
Didenko, S
Dijkstra, H
Dordei, F
Dorigo, M
Reis, ACD
Suárez, AD
Douglas, L
Dovbnya, A
Dreimanis, K
Dufour, L
Dujany, G
Durante, P
Durham, JM
Dutta, D
Dzhelyadin, R
Dziewiecki, M
Dziurda, A
Dzyuba, A
Easo, S
Egede, U
Egorychev, V
Eidelman, S
Eisenhardt, S
Eitschberger, U
Ekelhof, R
Ek-In, S
Eklund, L
Ely, S
Ene, A
Escher, S
Esen, S
Evans, T
Falabella, A
Färber, C
Farley, N
Farry, S
Fazzini, D
Féo, M
Declara, PF
Prieto, AF
Ferrari, F
Lopes, LF
Rodrigues, FF
Sole, SF
Ferro-Luzzi, M
Filippov, S
Fini, RA
Fiorini, M
Firlej, M
Fitzpatrick, C
Fiutowski, T
Fleuret, F
Fontana, M
Fontanelli, F
Forty, R
Lima, VF
Sevilla, MF
Frank, M
Frei, C
Fu, J
Funk, W
Gabriel, E
Torreira, AG
Galli, D
Gallorini, S
Gambetta, S
Gan, Y
Gandelman, M
Gandini, P
Gao, Y
Martin, LMG
Pardiñas, JG
Plana, BG
Tico, JG
Garrido, L
Gascon, D
Gaspar, C
Gazzoni, G
Gerick, D
Gersabeck, E
Gersabeck, M
Gershon, T
Gerstel, D
Ghez, P
Gibson, V
Girard, OG
Gironell, PG
Giubega, L
Gizdov, K
Gligorov, VV
Göbel, C
Golubkov, D
Golutvin, A
Gomes, A
Gorelov, IV
Gotti, C
Govorkova, E
Grabowski, JP
Diaz, RG
Cardoso, LAG
Graugés, E
Graverini, E
Graziani, G
Grecu, A
Greim, R
Griffith, P
Grillo, L
Gruber, L
Cazon, BRG
Gu, C
Gushchin, E
Guth, A
Guz, Y
Gys, T
Hadavizadeh, T
Hadjivasiliou, C
Haefeli, G
Haen, C
Haines, SC
Hamilton, B
Han, Q
Han, X
Hancock, TH
Hansmann-Menzemer, S
Harnew, N
Harrison, T
Hasse, C
Hatch, M
He, J
Hecker, M
Heijhoff, K
Heinicke, K
Heister, A
Hennessy, K
Henry, L
Heß, M
Heuel, J
Hicheur, A
Charman, RH
Hill, D
Hilton, M
Hopchev, PH
Hu, J
Hu, W
Huang, W
Huard, ZC
Hulsbergen, W
Humair, T
Hushchyn, M
Hutchcroft, D
Hynds, D
Ibis, P
Idzik, M
Ilten, P
Inglessi, A
Inyakin, A
Ivshin, K
Jacobsson, R
Jakobsen, S
Jalocha, J
Jans, E
Jashal, BK
Jawahery, A
Jiang, F
John, M
Johnson, D
Jones, CR
Joram, C
Jost, B
Jurik, N
Kandybei, S
Karacson, M
Kariuki, JM
Karodia, S
Kazeev, N
Kecke, M
Keizer, F
Kelsey, M
Kenzie, M
Ketel, T
Khanji, B
Kharisova, A
Khurewathanakul, C
Kim, KE
Kirn, T
Kirsebom, VS
Klaver, S
Klimaszewski, K
Koliiev, S
Kolpin, M
Kondybayeva, A
Konoplyannikov, A
Kopciewicz, P
Kopecna, R
Koppenburg, P
Kostiuk, I
Kot, O
Kotriakhova, S
Kozeiha, M
Kravchuk, L
Kreps, M
Kress, F
Kretzschmar, S
Krokovny, P
Krupa, W
Krzemien, W
Kucewicz, W
Kucharczyk, M
Kudryavtsev, V
Kunde, GJ
Kuonen, AK
Kvaratskheliya, T
Lacarrere, D
Lafferty, G
Lai, A
Lancierini, D
Lanfranchi, G
Langenbruch, C
Latham, T
Lazzeroni, C
Gac, RL
Lefèvre, R
Leflat, A
Lemaitre, F
Leroy, O
Lesiak, T
Leverington, B
Li, H
Li, P-R
Li, X
Li, Y
Li, Z
Liang, X
Likhomanenko, T
Lindner, R
Lionetto, F
Lisovskyi, V
Liu, G
Liu, X
Loh, D
Loi, A
Castro, JL
Longstaff, I
Lopes, JH
Loustau, G
Lovell, GH
Lucchesi, D
Martinez, ML
Luo, Y
Lupato, A
Luppi, E
Lupton, O
Lusiani, A
Lyu, X
Machefert, F
Maciuc, F
Macko, V
Mackowiak, P
Maddrell-Mander, S
Maev, O
Maguire, K
Maisuzenko, D
Majewski, MW
Malde, S
Malecki, B
Malinin, A
Maltsev, T
Malygina, H
Manca, G
Mancinelli, G
Marangotto, D
Maratas, J
Marchand, JF
Marconi, U
Benito, CM
Marinangeli, M
Marino, P
Marks, J
Marshall, PJ
Martellotti, G
Martinazzoli, L
Martinelli, M
Santos, DM
Vidal, FM
Massafferri, A
Materok, M
Matev, R
Mathad, A
Mathe, Z
Matiunin, V
Matteuzzi, C
Mattioli, KR
Mauri, A
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Maurin, B
McCann, M
McNab, A
McNulty, R
Mead, JV
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Michielin, E
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Wang, M
Wang, Y
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Wark, HM
Watson, NK
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Williams, T
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Xu, Q
Xu, Z
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Yang, Z
Yao, Y
Yeomans, LE
Yin, H
Yu, J
Yuan, X
Yushchenko, O
Zarebski, KA
Zavertyaev, M
Zeng, M
Zhang, D
Zhang, L
Zhang, S
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Zhelezov, A
Zheng, Y
Zhou, Y
Zhu, X
Zhukov, V
Zonneveld, JB
Zucchelli, S
Item Type: Journal Article
Abstract: A search for $B^{0}_{s}\to\tau^{\pm}\mu^{\mp}$ and $B^{0}\to\tau^{\pm}\mu^{\mp}$ decays is performed using data corresponding to an integrated luminosity of 3 fb$^{-1}$ of proton-proton collisions, recorded with the LHCb detector in 2011 and 2012. For this search, the $\tau$ lepton is reconstructed in the $\tau^{-}\to\pi^{-}\pi^{+}\pi^{-}\nu_{\tau}$ channel. No significant signal is observed. Assuming no contribution from $B^{0}\to\tau^{\pm}\mu^{\mp}$ decays, an upper limit is set on the $B^{0}_{s}\to\tau^{\pm}\mu^{\mp}$ branching fraction of $\mathcal{B}\left( B^{0}_{s}\to\tau^{\pm}\mu^{\mp}\right) < 4.2\times 10^{-5}$ at $95\%$ confidence level. If instead no contribution from $B^{0}_{s}\to\tau^{\pm}\mu^{\mp}$ decays is assumed, a limit of $\mathcal{B}\left( B^{0}\to\tau^{\pm}\mu^{\mp}\right) < 1.4\times 10^{-5}$ is obtained at $95\%$ confidence level. These are the first limit on $\mathcal{B}\left( B^{0}_{s}\to\tau^{\pm}\mu^{\mp}\right)$ and the world's best limit on $\mathcal{B}\left( B^{0}\to\tau^{\pm}\mu^{\mp}\right)$.
URI: http://hdl.handle.net/10044/1/79884
DOI: 10.1103/PhysRevLett.123.211801
Start Page: 211801
Journal / Book Title: Phys. Rev. Lett.
Volume: 123
Copyright Statement: © 2019 CERN, for the LHCb Collaboration. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license (https://creativecommons.org/licenses/by/4.0/). Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
Keywords: hep-ex
hep-ex
General Physics
01 Mathematical Sciences
02 Physical Sciences
09 Engineering
Notes: 15 pages, 5 figures. All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2019-016.html
Open Access location: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.123.211801
Appears in Collections:Physics
High Energy Physics