Abstract
A search for CP violation in the decay Λb 0 → pK−μ+μ− is presented. This decay is mediated by flavour-changing neutral-current transitions in the Standard Model and is potentially sensitive to new sources of CP violation. The study is based on a data sample of proton-proton collisions recorded with the LHCb experiment, corresponding to an integrated luminosity of 3 fb−1. The Λb 0 → pK−μ+μ− decay is observed for the first time, and two observables that are sensitive to different manifestations of CP violation are measured, (Formula Presented.)where the latter is based on asymmetries in the angle between the μ+μ− and pK− decay planes. These are measured to be(Formula Presented.)and no evidence for CP violation is found.[Figure not available: see fulltext.].
Original language | English (US) |
---|---|
Journal | Journal of High Energy Physics |
Volume | 2017 |
Issue number | 6 |
DOIs | |
State | Published - Jun 1 2017 |
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Keywords
- B physics
- CP violation
- FCNC Interaction
- Hadron-Hadron scattering (experiments)
ASJC Scopus subject areas
- Nuclear and High Energy Physics
Cite this
Observation of the decay Λb 0 → pK − μ + μ − and a search for CP violation. / The Lhcb Collaboration.
In: Journal of High Energy Physics, Vol. 2017, No. 6, 01.06.2017.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Observation of the decay Λb 0 → pK − μ + μ − and a search for CP violation
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 - 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 - Artuso, Marina
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 - Barlow, R. J.
AU - Barschel, C.
AU - Barsuk, S.
AU - Barter, W.
AU - Baryshnikov, F.
AU - Baszczyk, M.
AU - Batozskaya, V.
AU - Batsukh, B.
AU - Battista, V.
AU - Blusk, Steven Roy
AU - Rudolph, Matthew
AU - Skwarnicki, Tomasz
AU - Stone, Sheldon
PY - 2017/6/1
Y1 - 2017/6/1
N2 - A search for CP violation in the decay Λb 0 → pK−μ+μ− is presented. This decay is mediated by flavour-changing neutral-current transitions in the Standard Model and is potentially sensitive to new sources of CP violation. The study is based on a data sample of proton-proton collisions recorded with the LHCb experiment, corresponding to an integrated luminosity of 3 fb−1. The Λb 0 → pK−μ+μ− decay is observed for the first time, and two observables that are sensitive to different manifestations of CP violation are measured, (Formula Presented.)where the latter is based on asymmetries in the angle between the μ+μ− and pK− decay planes. These are measured to be(Formula Presented.)and no evidence for CP violation is found.[Figure not available: see fulltext.].
AB - A search for CP violation in the decay Λb 0 → pK−μ+μ− is presented. This decay is mediated by flavour-changing neutral-current transitions in the Standard Model and is potentially sensitive to new sources of CP violation. The study is based on a data sample of proton-proton collisions recorded with the LHCb experiment, corresponding to an integrated luminosity of 3 fb−1. The Λb 0 → pK−μ+μ− decay is observed for the first time, and two observables that are sensitive to different manifestations of CP violation are measured, (Formula Presented.)where the latter is based on asymmetries in the angle between the μ+μ− and pK− decay planes. These are measured to be(Formula Presented.)and no evidence for CP violation is found.[Figure not available: see fulltext.].
KW - B physics
KW - CP violation
KW - FCNC Interaction
KW - Hadron-Hadron scattering (experiments)
UR - http://www.scopus.com/inward/record.url?scp=85021447249&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85021447249&partnerID=8YFLogxK
U2 - 10.1007/JHEP06(2017)108
DO - 10.1007/JHEP06(2017)108
M3 - Article
AN - SCOPUS:85021447249
VL - 2017
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
SN - 1126-6708
IS - 6
ER -