TY - JOUR
T1 - Search for CP violation in D+s → K0Sπ+, D+ → K0SK+, and D+ → ϕπ+ decays
AU - LHCb Collaboration
AU - Aaij, R.
AU - Abellan Beteta, C.
AU - Adeva, B.
AU - Adinolfi, M.
AU - Adrover, C.
AU - Affolder, A.
AU - Ajaltouni, Z.
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 - Anderlini, L.
AU - Anderson, J.
AU - Andreassen, R.
AU - Appleby, R. B.
AU - Aquines Gutierrez, O.
AU - Archilli, F.
AU - Artamonov, A.
AU - Artuso, M.
AU - Aslanides, E.
AU - Auriemma, G.
AU - Bachmann, S.
AU - Back, J. J.
AU - Baesso, C.
AU - Balagura, V.
AU - Baldini, W.
AU - Barlow, R. J.
AU - Barschel, C.
AU - Barsuk, S.
AU - Barter, W.
AU - Bauer, Th
AU - Bay, A.
AU - Beddow, J.
AU - Bifani, S.
AU - Elsby, D.
AU - Ilten, P.
AU - Kenyon, I. R.
AU - Lazzeroni, C.
AU - Mazurov, A.
AU - McCarthy, J.
AU - Parkinson, C. J.
AU - Popov, D.
AU - Thomas, E.
AU - Watson, N. K.
PY - 2019/5/17
Y1 - 2019/5/17
N2 - A search for charge-parity (CP) violation in
Cabibbo-suppressed D+s → K0Sπ+, D+ → K0SK+, and D+ → ϕπ decays
is reported using proton-proton collision data, corresponding to an integrated
luminosity of 3.8 fb−1 , collected at a center-of-mass energy of 13 TeV with
the LHCb detector. High-yield samples of kinematically and topologically
similar Cabibbo-favored D+(s) decays are analyzed to subtract nuisance
asymmetries due to production and detection effects, including those induced by
CP violation in the neutral kaon system. The results are
ACP(D+s → K0Sπ+) = (1.3±1.9±0.5)×10−3,ACP(D+ → K0SK+) = (−0.09±0.65±0.48)×10−3,ACP(D+ → ϕπ+) = (0.05±0.42±0.29)×10−3,
where the first uncertainties are statistical and the second systematic. They
are the most precise measurements of these quantities to date, and are
consistent with CP symmetry. A combination with previous LHCb measurements,
based on data collected at 7 and 8 TeV, is also reported.
AB - A search for charge-parity (CP) violation in
Cabibbo-suppressed D+s → K0Sπ+, D+ → K0SK+, and D+ → ϕπ decays
is reported using proton-proton collision data, corresponding to an integrated
luminosity of 3.8 fb−1 , collected at a center-of-mass energy of 13 TeV with
the LHCb detector. High-yield samples of kinematically and topologically
similar Cabibbo-favored D+(s) decays are analyzed to subtract nuisance
asymmetries due to production and detection effects, including those induced by
CP violation in the neutral kaon system. The results are
ACP(D+s → K0Sπ+) = (1.3±1.9±0.5)×10−3,ACP(D+ → K0SK+) = (−0.09±0.65±0.48)×10−3,ACP(D+ → ϕπ+) = (0.05±0.42±0.29)×10−3,
where the first uncertainties are statistical and the second systematic. They
are the most precise measurements of these quantities to date, and are
consistent with CP symmetry. A combination with previous LHCb measurements,
based on data collected at 7 and 8 TeV, is also reported.
UR - http://www.scopus.com/inward/record.url?scp=85065851480&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.122.191803
DO - 10.1103/PhysRevLett.122.191803
M3 - Article
C2 - 31144928
AN - SCOPUS:85065851480
SN - 0031-9007
VL - 122
JO - Physical Review Letters
JF - Physical Review Letters
IS - 19
M1 - 191803
ER -