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Search for lepton-flavour-violating decays of Higgs-like bosons.

  • Author(s): Aaij, R;
  • Abellán Beteta, C;
  • Adeva, B;
  • Adinolfi, M;
  • Aidala, CA;
  • Ajaltouni, Z;
  • Akar, S;
  • Albicocco, P;
  • Albrecht, J;
  • Alessio, F;
  • Alexander, M;
  • Alfonso Albero, A;
  • Alkhazov, G;
  • Alvarez Cartelle, P;
  • Alves, AA;
  • Amato, S;
  • Amerio, S;
  • Amhis, Y;
  • An, L;
  • Anderlini, L;
  • Andreassi, G;
  • Andreotti, M;
  • Andrews, JE;
  • Appleby, RB;
  • Archilli, F;
  • d'Argent, P;
  • Arnau Romeu, J;
  • 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;
  • Baryshnikov, F;
  • Batozskaya, V;
  • Batsukh, B;
  • Battista, V;
  • Bay, A;
  • Beddow, J;
  • Bedeschi, F;
  • Bediaga, I;
  • Beiter, A;
  • Bel, LJ;
  • Belin, S;
  • Beliy, N;
  • Bellee, V;
  • Belloli, N;
  • Belous, K;
  • Belyaev, I;
  • Ben-Haim, E;
  • Bencivenni, G;
  • Benson, S;
  • Beranek, S;
  • Berezhnoy, A;
  • Bernet, R;
  • Berninghoff, D;
  • Bertholet, E;
  • Bertolin, A;
  • Betancourt, C;
  • Betti, F;
  • Bettler, MO;
  • van Beuzekom, M;
  • Bezshyiko, Ia;
  • Bhasin, S;
  • Bhom, J;
  • Bifani, S;
  • Billoir, P;
  • Birnkraut, A;
  • Bizzeti, A;
  • Bjørn, M;
  • Blago, MP;
  • Blake, T;
  • Blanc, F;
  • Blusk, S;
  • Bobulska, D;
  • Bocci, V;
  • Boente Garcia, O;
  • Boettcher, T;
  • Bondar, A;
  • Bondar, N;
  • Borghi, S;
  • Borisyak, M;
  • Borsato, M;
  • Bossu, F;
  • Boubdir, M;
  • Bowcock, TJV;
  • Bozzi, C;
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  • Brodski, M;
  • Brodzicka, J;
  • Brossa Gonzalo, A;
  • Brundu, D;
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  • Byczynski, W;
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  • Cai, H;
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  • Calvo Gomez, M;
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  • Campora Perez, DH;
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  • Dufour, L;
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  • Gligorov, VV;
  • Golubkov, D;
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  • Granado Cardoso, LA;
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  • Graverini, E;
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  • Guz, Yu;
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  • Heß, M;
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  • Huard, ZC;
  • Hulsbergen, W;
  • Humair, T;
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  • Zhang, Y;
  • Zhelezov, A;
  • Zheng, Y;
  • Zhu, X;
  • Zhukov, V;
  • Zonneveld, JB;
  • Zucchelli, S
  • et al.
Abstract

A search is presented for a Higgs-like boson with mass in the range 45 to 195 GeV/c2 decaying into a muon and a tau lepton. The dataset consists of proton-proton interactions at a centre-of-mass energy of 8 TeV , collected by the LHCb experiment, corresponding to an integrated luminosity of 2 fb-1 . The tau leptons are reconstructed in both leptonic and hadronic decay channels. An upper limit on the production cross-section multiplied by the branching fraction at 95% confidence level is set and ranges from 22 pb for a boson mass of 45 GeV/c2 to 4 pb for a mass of 195 GeV/c2 .

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