TY - JOUR
T1 - Search for CP violation in D0→KS0KS0 decays in proton–proton collisions at s=13TeV
AU - CMS Collaboration
AU - Zhokin, A.
AU - Zhizhin, I.
AU - Zarubin, A.
AU - Yuldashev, B. S.
AU - Voytishin, N.
AU - Vorobyev, A.
AU - Uzunian, A.
AU - Uvarov, L.
AU - Tulupov, A.
AU - Toropin, A.
AU - Tlisova, I.
AU - Teryaev, O.
AU - Terkulov, A.
AU - Sulimov, V.
AU - Sosnov, D.
AU - Snigirev, A.
AU - Smirnov, V.
AU - Slabospitskii, S.
AU - Skovpen, Y.
AU - Shulha, S.
AU - Shmatov, S.
AU - Shalaev, V.
AU - Sergeychik, V.
AU - Savrin, V.
AU - Savina, M.
AU - Radchenko, O.
AU - Popov, V.
AU - Polikarpov, S.
AU - Petrushanko, S.
AU - Perelygin, V.
AU - Palichik, V.
AU - Oreshkin, V.
AU - Obraztsov, S.
AU - Nikitenko, A.
AU - Murzin, V.
AU - Matveev, V.
AU - Malakhov, A.
AU - Makarenko, V.
AU - Lychkovskaya, N.
AU - Levchenko, P.
AU - Lanev, A.
AU - Krasnikov, N.
AU - Zghiche, A.
AU - Zabi, A.
AU - Salerno, R.
AU - Ochando, C.
AU - Nguyen, M.
AU - de Cassagnac, R. Granier
AU - Cappati, A.
AU - Beaudette, F.
N1 - Publisher Copyright:
© The Author(s) 2024.
PY - 2024/12/1
Y1 - 2024/12/1
N2 - A search is reported for charge-parity CP violation in D0→KS0KS0 decays, using data collected in proton–proton collisions at s=13TeV recorded by the CMS experiment in 2018. The analysis uses a dedicated data set that corresponds to an integrated luminosity of 41.6fb-1, which consists of about 10 billion events containing a pair of b hadrons, nearly all of which decay to charm hadrons. The flavor of the neutral D meson is determined by the pion charge in the reconstructed decays D∗+→D0π+ and D∗-→D¯0π-. The CP asymmetry in D0→KS0KS0 is measured to be ACP(KS0KS0)=(6.2±3.0±0.2±0.8)%, where the three uncertainties represent the statistical uncertainty, the systematic uncertainty, and the uncertainty in the measurement of the CP asymmetry in the D0→KS0π+π- decay. This is the first CP asymmetry measurement by CMS in the charm sector as well as the first to utilize a fully hadronic final state.
AB - A search is reported for charge-parity CP violation in D0→KS0KS0 decays, using data collected in proton–proton collisions at s=13TeV recorded by the CMS experiment in 2018. The analysis uses a dedicated data set that corresponds to an integrated luminosity of 41.6fb-1, which consists of about 10 billion events containing a pair of b hadrons, nearly all of which decay to charm hadrons. The flavor of the neutral D meson is determined by the pion charge in the reconstructed decays D∗+→D0π+ and D∗-→D¯0π-. The CP asymmetry in D0→KS0KS0 is measured to be ACP(KS0KS0)=(6.2±3.0±0.2±0.8)%, where the three uncertainties represent the statistical uncertainty, the systematic uncertainty, and the uncertainty in the measurement of the CP asymmetry in the D0→KS0π+π- decay. This is the first CP asymmetry measurement by CMS in the charm sector as well as the first to utilize a fully hadronic final state.
UR - https://www.scopus.com/pages/publications/105011738017
U2 - 10.1140/epjc/s10052-024-13244-0
DO - 10.1140/epjc/s10052-024-13244-0
M3 - Article
AN - SCOPUS:105011738017
SN - 1434-6044
VL - 84
JO - European Physical Journal C
JF - European Physical Journal C
IS - 12
M1 - 1264
ER -