Standard

Search for the Lepton-Flavor-Violating Decays Bs0 →τ±μâ" and B0 →τ±μâ". / The LHCb Collaboration.

In: Physical Review Letters, Vol. 123, No. 21, 211801, 22.11.2019.

Research output: Contribution to journal › Article › peer-review

Harvard

The LHCb Collaboration 2019, 'Search for the Lepton-Flavor-Violating Decays Bs0 →τ±μâ" and B0 →τ±μâ"', Physical Review Letters, vol. 123, no. 21, 211801. https://doi.org/10.1103/PhysRevLett.123.211801

APA

The LHCb Collaboration (2019). Search for the Lepton-Flavor-Violating Decays Bs0 →τ±μâ" and B0 →τ±μâ". Physical Review Letters, 123(21), [211801]. https://doi.org/10.1103/PhysRevLett.123.211801

Vancouver

The LHCb Collaboration. Search for the Lepton-Flavor-Violating Decays Bs0 →τ±μâ" and B0 →τ±μâ". Physical Review Letters. 2019 Nov 22;123(21):211801. doi: 10.1103/PhysRevLett.123.211801

Author

The LHCb Collaboration. / Search for the Lepton-Flavor-Violating Decays Bs0 →τ±μâ" and B0 →τ±μâ". In: Physical Review Letters. 2019 ; Vol. 123, No. 21.

BibTeX

@article{979e5186f9964c5983a86d5ca99fe6ab,
title = "Search for the Lepton-Flavor-Violating Decays Bs0 →τ±μ{\^a}{"} and B0 →τ±μ{\^a}{"}",
abstract = "Results are reported from a search for the rare decays Bs0→τ±μ{\^a}{"} and B0→τ±μ{\^a}{"}, where the τ lepton is reconstructed in the channel τ-→π-π+π-ντ. These processes are effectively forbidden in the standard model, but they can potentially occur at detectable rates in models of new physics that can induce lepton-flavor-violating decays. The search is based on a data sample corresponding to 3 fb-1 of proton-proton collisions recorded by the LHCb experiment in 2011 and 2012. The event yields observed in the signal regions for both processes are consistent with the expected standard model backgrounds. Because of the limited mass resolution arising from the undetected τ neutrino, the Bs0 and B0 signal regions are highly overlapping. Assuming no contribution from B0→τ±μ{\^a}{"}, the upper limit B(Bs0→τ±μ{\^a}{"})<4.2×10-5 is obtained at 95% confidence level. If no contribution from Bs0→τ±μ{\^a}{"} is assumed, a limit of B(B0→τ±μ{\^a}{"})<1.4×10-5 is obtained at 95% confidence level. These results represent the first limit on B(Bs0→τ±μ{\^a}{"}) and the most stringent limit on B(B0→τ±μ{\^a}{"}).",
author = "{The LHCb Collaboration} and R. Aaij and {Abell{\'a}n Beteta}, C. and B. Adeva and M. Adinolfi and Aidala, {C. A.} and Z. Ajaltouni and S. Akar and P. Albicocco and J. Albrecht and F. Alessio and M. Alexander and {Alfonso Albero}, A. and G. Alkhazov and {Alvarez Cartelle}, P. and Alves, {A. A.} and S. Amato and Y. Amhis and L. An and L. Anderlini and G. Andreassi and M. Andreotti and Andrews, {J. E.} and F. Archilli and {Arnau Romeu}, J. and A. Artamonov and M. Artuso and K. Arzymatov and E. Aslanides and M. Atzeni and B. Audurier and S. Bachmann and Back, {J. J.} and S. Baker and V. Balagura and W. Baldini and A. Baranov and Barlow, {R. J.} and S. Barsuk and W. Barter and M. Bartolini and F. Baryshnikov and V. Batozskaya and B. Batsukh and A. Bondar and S. Eidelman and P. Krokovny and V. Kudryavtsev and T. Maltsev and L. Shekhtman and V. Vorobyev",
year = "2019",
month = nov,
day = "22",
doi = "10.1103/PhysRevLett.123.211801",
language = "English",
volume = "123",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "21",

}

RIS

TY - JOUR

T1 - Search for the Lepton-Flavor-Violating Decays Bs0 →τ±μâ" and B0 →τ±μâ"

AU - The LHCb Collaboration

AU - Aaij, R.

AU - Abellán Beteta, C.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Aidala, C. A.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Albicocco, P.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Alfonso Albero, A.

AU - Alkhazov, G.

AU - Alvarez Cartelle, P.

AU - Alves, A. A.

AU - Amato, S.

AU - Amhis, Y.

AU - An, L.

AU - Anderlini, L.

AU - Andreassi, G.

AU - Andreotti, M.

AU - Andrews, J. E.

AU - Archilli, F.

AU - Arnau Romeu, J.

AU - Artamonov, A.

AU - Artuso, M.

AU - Arzymatov, K.

AU - Aslanides, E.

AU - Atzeni, M.

AU - Audurier, B.

AU - Bachmann, S.

AU - Back, J. J.

AU - Baker, S.

AU - Balagura, V.

AU - Baldini, W.

AU - Baranov, A.

AU - Barlow, R. J.

AU - Barsuk, S.

AU - Barter, W.

AU - Bartolini, M.

AU - Baryshnikov, F.

AU - Batozskaya, V.

AU - Batsukh, B.

AU - Bondar, A.

AU - Eidelman, S.

AU - Krokovny, P.

AU - Kudryavtsev, V.

AU - Maltsev, T.

AU - Shekhtman, L.

AU - Vorobyev, V.

PY - 2019/11/22

Y1 - 2019/11/22

N2 - Results are reported from a search for the rare decays Bs0→τ±μâ" and B0→τ±μâ", where the τ lepton is reconstructed in the channel τ-→π-π+π-ντ. These processes are effectively forbidden in the standard model, but they can potentially occur at detectable rates in models of new physics that can induce lepton-flavor-violating decays. The search is based on a data sample corresponding to 3 fb-1 of proton-proton collisions recorded by the LHCb experiment in 2011 and 2012. The event yields observed in the signal regions for both processes are consistent with the expected standard model backgrounds. Because of the limited mass resolution arising from the undetected τ neutrino, the Bs0 and B0 signal regions are highly overlapping. Assuming no contribution from B0→τ±μâ", the upper limit B(Bs0→τ±μâ")<4.2×10-5 is obtained at 95% confidence level. If no contribution from Bs0→τ±μâ" is assumed, a limit of B(B0→τ±μâ")<1.4×10-5 is obtained at 95% confidence level. These results represent the first limit on B(Bs0→τ±μâ") and the most stringent limit on B(B0→τ±μâ").

AB - Results are reported from a search for the rare decays Bs0→τ±μâ" and B0→τ±μâ", where the τ lepton is reconstructed in the channel τ-→π-π+π-ντ. These processes are effectively forbidden in the standard model, but they can potentially occur at detectable rates in models of new physics that can induce lepton-flavor-violating decays. The search is based on a data sample corresponding to 3 fb-1 of proton-proton collisions recorded by the LHCb experiment in 2011 and 2012. The event yields observed in the signal regions for both processes are consistent with the expected standard model backgrounds. Because of the limited mass resolution arising from the undetected τ neutrino, the Bs0 and B0 signal regions are highly overlapping. Assuming no contribution from B0→τ±μâ", the upper limit B(Bs0→τ±μâ")<4.2×10-5 is obtained at 95% confidence level. If no contribution from Bs0→τ±μâ" is assumed, a limit of B(B0→τ±μâ")<1.4×10-5 is obtained at 95% confidence level. These results represent the first limit on B(Bs0→τ±μâ") and the most stringent limit on B(B0→τ±μâ").

UR - http://www.scopus.com/inward/record.url?scp=85075599590&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.123.211801

DO - 10.1103/PhysRevLett.123.211801

M3 - Article

C2 - 31809134

AN - SCOPUS:85075599590

VL - 123

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 21

M1 - 211801

ER -

ID: 23376044