Standard

Test of lepton universality with Λb0→pK− ℓ+ ℓ− decays. / The LHCb Collaboration.

In: Journal of High Energy Physics, Vol. 2020, No. 5, 40, 11.05.2020.

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

Harvard

The LHCb Collaboration 2020, 'Test of lepton universality with Λb0→pK− ℓ+ ℓ− decays', Journal of High Energy Physics, vol. 2020, no. 5, 40. https://doi.org/10.1007/JHEP05(2020)040

APA

The LHCb Collaboration (2020). Test of lepton universality with Λb0→pK− ℓ+ ℓ− decays. Journal of High Energy Physics, 2020(5), [40]. https://doi.org/10.1007/JHEP05(2020)040

Vancouver

The LHCb Collaboration. Test of lepton universality with Λb0→pK− ℓ+ ℓ− decays. Journal of High Energy Physics. 2020 May 11;2020(5):40. doi: 10.1007/JHEP05(2020)040

Author

The LHCb Collaboration. / Test of lepton universality with Λb0→pK− ℓ+ ℓ− decays. In: Journal of High Energy Physics. 2020 ; Vol. 2020, No. 5.

BibTeX

@article{145439979e87494d81b9e822b39c753a,
title = "Test of lepton universality with Λb0→pK− ℓ+ ℓ− decays",
abstract = "The ratio of branching fractions of the decays Λb0 → pK−e+e− and Λb0 → pK−μ+μ−,RpK−1, is measured for the first time using proton-proton collision data corresponding to an integrated luminosity of 4.7 fb−1 recorded with the LHCb experiment at center-of-mass energies of 7, 8 and 13 TeV. In the dilepton mass-squared range 0.1 < q2< 6.0 GeV2/c4 and the pK− mass range m(pK−) < 2600 MeV/c2, the ratio of branching fractions is measured to be RpK−1=1.17−0.16+0.18±0.07, where the first uncertainty is statistical and the second systematic. This is the first test of lepton universality with b baryons and the first observation of the decay Λb0 → pK−e+e−.",
keywords = "B physics, Branching fraction, Flavour Changing Neutral Currents, Hadron- Hadron scattering (experiments), Rare decay, Hadron scattering (experiments), DECAY, Hadron",
author = "{The LHCb Collaboration} and R. Aaij and {Abell{\'a}n Beteta}, C. and T. Ackernley and B. Adeva and M. Adinolfi and H. Afsharnia and Aidala, {C. A.} and S. Aiola 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 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 A. Bondar and S. Eidelman and P. Krokovny and V. Kudryavtsev and T. Maltsev and L. Shekhtman and V. Vorobyev",
year = "2020",
month = may,
day = "11",
doi = "10.1007/JHEP05(2020)040",
language = "English",
volume = "2020",
journal = "Journal of High Energy Physics",
issn = "1029-8479",
publisher = "Springer US",
number = "5",

}

RIS

TY - JOUR

T1 - Test of lepton universality with Λb0→pK− ℓ+ ℓ− decays

AU - The LHCb Collaboration

AU - Aaij, R.

AU - Abellán Beteta, C.

AU - Ackernley, T.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Afsharnia, H.

AU - Aidala, C. A.

AU - Aiola, S.

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 - 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 - Bondar, A.

AU - Eidelman, S.

AU - Krokovny, P.

AU - Kudryavtsev, V.

AU - Maltsev, T.

AU - Shekhtman, L.

AU - Vorobyev, V.

PY - 2020/5/11

Y1 - 2020/5/11

N2 - The ratio of branching fractions of the decays Λb0 → pK−e+e− and Λb0 → pK−μ+μ−,RpK−1, is measured for the first time using proton-proton collision data corresponding to an integrated luminosity of 4.7 fb−1 recorded with the LHCb experiment at center-of-mass energies of 7, 8 and 13 TeV. In the dilepton mass-squared range 0.1 < q2< 6.0 GeV2/c4 and the pK− mass range m(pK−) < 2600 MeV/c2, the ratio of branching fractions is measured to be RpK−1=1.17−0.16+0.18±0.07, where the first uncertainty is statistical and the second systematic. This is the first test of lepton universality with b baryons and the first observation of the decay Λb0 → pK−e+e−.

AB - The ratio of branching fractions of the decays Λb0 → pK−e+e− and Λb0 → pK−μ+μ−,RpK−1, is measured for the first time using proton-proton collision data corresponding to an integrated luminosity of 4.7 fb−1 recorded with the LHCb experiment at center-of-mass energies of 7, 8 and 13 TeV. In the dilepton mass-squared range 0.1 < q2< 6.0 GeV2/c4 and the pK− mass range m(pK−) < 2600 MeV/c2, the ratio of branching fractions is measured to be RpK−1=1.17−0.16+0.18±0.07, where the first uncertainty is statistical and the second systematic. This is the first test of lepton universality with b baryons and the first observation of the decay Λb0 → pK−e+e−.

KW - B physics

KW - Branching fraction

KW - Flavour Changing Neutral Currents

KW - Hadron- Hadron scattering (experiments)

KW - Rare decay

KW - Hadron scattering (experiments)

KW - DECAY

KW - Hadron

UR - http://www.scopus.com/inward/record.url?scp=85084568728&partnerID=8YFLogxK

U2 - 10.1007/JHEP05(2020)040

DO - 10.1007/JHEP05(2020)040

M3 - Article

AN - SCOPUS:85084568728

VL - 2020

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

SN - 1029-8479

IS - 5

M1 - 40

ER -

ID: 24278507