Evidence for the Rare Decay Σ+ →pμ+μ-

Standard

Evidence for the Rare Decay Σ+ →pμ+μ-. / The LHCb Collaboration.

In: Physical Review Letters, Vol. 120, No. 22, 221803, 31.05.2018.

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

Harvard

The LHCb Collaboration 2018, 'Evidence for the Rare Decay Σ+ →pμ+μ-', Physical Review Letters, vol. 120, no. 22, 221803. https://doi.org/10.1103/PhysRevLett.120.221803

APA

The LHCb Collaboration (2018). Evidence for the Rare Decay Σ+ →pμ+μ-. Physical Review Letters, 120(22), [221803]. https://doi.org/10.1103/PhysRevLett.120.221803

Vancouver

The LHCb Collaboration. Evidence for the Rare Decay Σ+ →pμ+μ-. Physical Review Letters. 2018 May 31;120(22):221803. doi: 10.1103/PhysRevLett.120.221803

Author

The LHCb Collaboration. / Evidence for the Rare Decay Σ+ →pμ+μ-. In: Physical Review Letters. 2018 ; Vol. 120, No. 22.

BibTeX

@article{a929648c37454f399ee5507f2f1ede57,

title = "Evidence for the Rare Decay Σ+ →pμ+μ-",

abstract = "A search for the rare decay Σ+→pμ+μ- is performed using pp collision data recorded by the LHCb experiment at center-of-mass energies s=7 and 8 TeV, corresponding to an integrated luminosity of 3 fb-1. An excess of events is observed with respect to the background expectation, with a signal significance of 4.1 standard deviations. No significant structure is observed in the dimuon invariant mass distribution, in contrast with a previous result from the HyperCP experiment. The measured Σ+→pμ+μ- branching fraction is (2.2-1.3+1.8)×10-8, where statistical and systematic uncertainties are included, which is consistent with the standard model prediction.",

keywords = "HYPERCP, PARTICLE, SEARCH, BOSON, TOOL",

author = "{The LHCb Collaboration} and R. Aaij and B. Adeva and M. Adinolfi and Z. Ajaltouni and S. Akar and J. Albrecht and F. Alessio and M. Alexander and {Alfonso Albero}, A. and S. Ali and G. Alkhazov and {Alvarez Cartelle}, P. and Alves, {A. A.} and S. Amato and S. Amerio and Y. Amhis and L. An and L. Anderlini and G. Andreassi and M. Andreotti and Andrews, {J. E.} and Appleby, {R. B.} and F. Archilli and P. D'Argent and {Arnau Romeu}, J. and A. Artamonov and M. Artuso and E. Aslanides and M. Atzeni and G. Auriemma and M. Baalouch and I. Babuschkin and S. Bachmann and Back, {J. J.} and A. Badalov and C. Baesso and S. Baker and V. Balagura and W. Baldini and A. Baranov and Barlow, {R. J.} and C. Barschel and S. Barsuk and W. Barter and F. Baryshnikov and A. Bondar and S. Eidelman and P. Krokovny and L. Shekhtman and V. Vorobyev",

note = "Publisher Copyright: {\textcopyright} 2018 CERN, for the LHCb Collaboration. Published by the American Physical Society under the terms of the »https://creativecommons.org/licenses/by/4.0/» Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP . ",

year = "2018",

month = may,

day = "31",

doi = "10.1103/PhysRevLett.120.221803",

language = "English",

volume = "120",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "22",

}

RIS

TY - JOUR

T1 - Evidence for the Rare Decay Σ+ →pμ+μ-

AU - The LHCb Collaboration

AU - Aaij, R.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Alfonso Albero, A.

AU - Ali, S.

AU - Alkhazov, G.

AU - Alvarez Cartelle, P.

AU - Alves, A. A.

AU - Amato, S.

AU - Amerio, S.

AU - Amhis, Y.

AU - An, L.

AU - Anderlini, L.

AU - Andreassi, G.

AU - Andreotti, M.

AU - Andrews, J. E.

AU - Appleby, R. B.

AU - Archilli, F.

AU - D'Argent, P.

AU - Arnau Romeu, J.

AU - Artamonov, A.

AU - Artuso, M.

AU - Aslanides, E.

AU - Atzeni, M.

AU - Auriemma, G.

AU - Baalouch, M.

AU - Babuschkin, I.

AU - Bachmann, S.

AU - Back, J. J.

AU - Badalov, A.

AU - Baesso, C.

AU - Baker, S.

AU - Balagura, V.

AU - Baldini, W.

AU - Baranov, A.

AU - Barlow, R. J.

AU - Barschel, C.

AU - Barsuk, S.

AU - Barter, W.

AU - Baryshnikov, F.

AU - Bondar, A.

AU - Eidelman, S.

AU - Krokovny, P.

AU - Shekhtman, L.

AU - Vorobyev, V.

N1 - Publisher Copyright: © 2018 CERN, for the LHCb Collaboration. Published by the American Physical Society under the terms of the »https://creativecommons.org/licenses/by/4.0/» Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP .

PY - 2018/5/31

Y1 - 2018/5/31

N2 - A search for the rare decay Σ+→pμ+μ- is performed using pp collision data recorded by the LHCb experiment at center-of-mass energies s=7 and 8 TeV, corresponding to an integrated luminosity of 3 fb-1. An excess of events is observed with respect to the background expectation, with a signal significance of 4.1 standard deviations. No significant structure is observed in the dimuon invariant mass distribution, in contrast with a previous result from the HyperCP experiment. The measured Σ+→pμ+μ- branching fraction is (2.2-1.3+1.8)×10-8, where statistical and systematic uncertainties are included, which is consistent with the standard model prediction.

AB - A search for the rare decay Σ+→pμ+μ- is performed using pp collision data recorded by the LHCb experiment at center-of-mass energies s=7 and 8 TeV, corresponding to an integrated luminosity of 3 fb-1. An excess of events is observed with respect to the background expectation, with a signal significance of 4.1 standard deviations. No significant structure is observed in the dimuon invariant mass distribution, in contrast with a previous result from the HyperCP experiment. The measured Σ+→pμ+μ- branching fraction is (2.2-1.3+1.8)×10-8, where statistical and systematic uncertainties are included, which is consistent with the standard model prediction.

KW - HYPERCP

KW - PARTICLE

KW - SEARCH

KW - BOSON

KW - TOOL

UR - http://www.scopus.com/inward/record.url?scp=85048160429&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.120.221803

DO - 10.1103/PhysRevLett.120.221803

M3 - Article

C2 - 29906142

AN - SCOPUS:85048160429

VL - 120

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 22

M1 - 221803

ER -

ID: 13792553