TY - JOUR
T1 - Measurement of the CKM angle γ using B± → DK±
with D → K0
Sπ
+π
−, K0
SK+K− decays
AU - Aaij, R.
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 - 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 - Arzymatov, K.
AU - Aslanides, E.
AU - Atzeni, M.
AU - Bachmann, S.
AU - Back, J. J.
AU - Baker, S.
AU - Bifani, S.
AU - Calladine, R.
AU - Chatzikonstantinidis, G.
AU - Farley, N.
AU - Griffith, P.
AU - Ilten, P.
AU - Lazzeroni, C.
AU - Mazurov, A.
AU - Pescatore, L.
AU - Plews, J.
AU - Popov, D.
AU - Sergi, A.
AU - Wang, M.
AU - Watson, N. K.
AU - Zarebski, K. A.
AU - LHCb Collaboration
N1 - The LHCb collaboration, Aaij, R., Adeva, B. et al. J. High Energ. Phys. (2018) 2018: 176. https://doi.org/10.1007/JHEP08(2018)176
PY - 2018/8/28
Y1 - 2018/8/28
N2 - A binned Dalitz plot analysis of B± → DK± decays, with D → K0
S
π
+π
− and
D → K0
SK+K−, is used to perform a measurement of the CP-violating observables x±
and y±, which are sensitive to the Cabibbo-Kobayashi-Maskawa angle γ. The analysis is
performed without assuming any D decay model, through the use of information on the
strong-phase variation over the Dalitz plot from the CLEO collaboration. Using a sample
of proton-proton collision data collected with the LHCb experiment in 2015 and 2016,
and corresponding to an integrated luminosity of 2.0 fb−1
, the values of the CP violation
parameters are found to be x− = (9.0±1.7±0.7±0.4)×10−2
, y− = (2.1±2.2±0.5±1.1)×
10−2
, x+ = (−7.7±1.9±0.7±0.4)×10−2
, and y+ = (−1.0±1.9±0.4±0.9)×10−2
. The first
uncertainty is statistical, the second is systematic, and the third is due to the uncertainty
on the strong-phase measurements. These values are used to obtain γ =
87 +11
−12◦
, rB =
0.086+0.013
−0.014, and δB = (101±11)◦
, where rB is the ratio between the suppressed and favoured
B-decay amplitudes and δB is the corresponding strong-interaction phase difference. This
measurement is combined with the result obtained using 2011 and 2012 data collected with
the LHCb experiment, to give γ =
80 +10
−9
◦
, rB = 0.080 ± 0.011, and δB = (110 ± 10)
AB - A binned Dalitz plot analysis of B± → DK± decays, with D → K0
S
π
+π
− and
D → K0
SK+K−, is used to perform a measurement of the CP-violating observables x±
and y±, which are sensitive to the Cabibbo-Kobayashi-Maskawa angle γ. The analysis is
performed without assuming any D decay model, through the use of information on the
strong-phase variation over the Dalitz plot from the CLEO collaboration. Using a sample
of proton-proton collision data collected with the LHCb experiment in 2015 and 2016,
and corresponding to an integrated luminosity of 2.0 fb−1
, the values of the CP violation
parameters are found to be x− = (9.0±1.7±0.7±0.4)×10−2
, y− = (2.1±2.2±0.5±1.1)×
10−2
, x+ = (−7.7±1.9±0.7±0.4)×10−2
, and y+ = (−1.0±1.9±0.4±0.9)×10−2
. The first
uncertainty is statistical, the second is systematic, and the third is due to the uncertainty
on the strong-phase measurements. These values are used to obtain γ =
87 +11
−12◦
, rB =
0.086+0.013
−0.014, and δB = (101±11)◦
, where rB is the ratio between the suppressed and favoured
B-decay amplitudes and δB is the corresponding strong-interaction phase difference. This
measurement is combined with the result obtained using 2011 and 2012 data collected with
the LHCb experiment, to give γ =
80 +10
−9
◦
, rB = 0.080 ± 0.011, and δB = (110 ± 10)
KW - B physics
KW - CKM angle gamma
KW - CP violation
KW - Flavor physics
KW - Hadron-Hadron scattering (experiments)
UR - http://www.scopus.com/inward/record.url?scp=85052727921&partnerID=8YFLogxK
U2 - 10.1007/JHEP08(2018)176
DO - 10.1007/JHEP08(2018)176
M3 - Article
AN - SCOPUS:85052727921
SN - 1126-6708
VL - 2018
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
IS - 8
M1 - 176
ER -