Search for charge-parity violation in semileptonically tagged D0 → K+π− decays

An analysis of the flavour oscillations of the charmed neutral meson is presented. The ratio of D0 → K+π− and D0 → K−π+ decay rates is measured as a function of the decay time of the D0 meson and compared with the charge-conjugated system to search for charge-parity violation. The meson flavour at p...

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Hauptverfasser:	Aaij, Roel (VerfasserIn) , Bachmann, Sebastian (VerfasserIn) , Carus, Leon (VerfasserIn) , Caspary, Rowina (VerfasserIn) , Celani, Sara (VerfasserIn) , Cocha Toapaxi, Carlos (VerfasserIn) , De Cian, Michel (VerfasserIn) , Dittmann, Lucas (VerfasserIn) , Esen, Sevda (VerfasserIn) , Glaser, Fabian (VerfasserIn) , Günther, Paul André (VerfasserIn) , Han, Xiaoxue (VerfasserIn) , Hansmann-Menzemer, Stephanie (VerfasserIn) , Herrero Gascón, Paula (VerfasserIn) , Langenbruch, Christoph (VerfasserIn) , Leverington, Blake (VerfasserIn) , Marks, Jörg (VerfasserIn) , Morgenthaler, Maurice Pierre (VerfasserIn) , Roy, Shreya (VerfasserIn) , Ruiz Diaz, Miguel (VerfasserIn) , Tat, Martin Duy (VerfasserIn) , Tuci, Giulia (VerfasserIn) , Uecker, Lennart Henning (VerfasserIn) , Unverzagt, Daniel Joachim (VerfasserIn) , Uwer, Ulrich (VerfasserIn) , Wang, Chishuai (VerfasserIn) , Witola, Lukas (VerfasserIn) , Zhao, Ya (VerfasserIn) , Zhelezov, Alexey (VerfasserIn)
Körperschaft:	LHCb Collaboration (VerfasserIn)
Dokumenttyp:	Article (Journal)
Sprache:	Englisch
Veröffentlicht:	19 March 2025
In:	Journal of high energy physics Year: 2025, Heft: 3, Pages: 1-30
ISSN:	1029-8479
DOI:	10.1007/JHEP03(2025)149
Online-Zugang:	Verlag, kostenfrei, Volltext: https://doi.org/10.1007/JHEP03(2025)149
Verfasserangaben:	The LHCb collaboration

MARC


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110	2		\|a LHCb Collaboration \|e VerfasserIn \|0 (DE-588)1166245764 \|0 (DE-627)1030265593 \|0 (DE-576)510686508 \|4 aut
245	1	0	\|a Search for charge-parity violation in semileptonically tagged D0 → K+π− decays \|c The LHCb collaboration
246	3	3	\|a Search for charge-parity violation in semileptonically tagged D 0 → K + pi - decays
246	3	3	\|a Search for charge-parity violation in semileptonically tagged D 0 → K plus pi minus decays
264		1	\|c 19 March 2025
300			\|b Diagramme
300			\|a 30
336			\|a Text \|b txt \|2 rdacontent
337			\|a Computermedien \|b c \|2 rdamedia
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500			\|a Im Titel sind die Zahl "0" sowie die Plus- und Minuszeichen hochgestellt
500			\|a The LHCb collaboration: R. Aaij, S. Bachmann, L. Carus, R. Caspary, S. Celani, C. Cocha Toapaxi, M. De Cian, L. Dittmann, S. Esen, F.C. Glaser, P.A. Günther, X. Han, S. Hansmann-Menzemer, P. Herrero Gascón, C. Langenbruch, B. Leverington, J. Marks, M.P. Morgenthaler, S.R. Roy, M. Ruiz Diaz, M.D Tat, G. Tuci, L.H. Uecker, D.J. Unverzagt, U. Uwer, C. Wang, L. Witola, Y. Zhao, A. Zhelezov [und viele weitere]
500			\|a Gesehen am 16.10.2025
520			\|a An analysis of the flavour oscillations of the charmed neutral meson is presented. The ratio of D0 → K+π− and D0 → K−π+ decay rates is measured as a function of the decay time of the D0 meson and compared with the charge-conjugated system to search for charge-parity violation. The meson flavour at production is double-tagged by the charges of the muon and pion in the preceding B overline → D∗(2010)+μ−X and D∗(2010)+ → D0π+ decays, respectively. These decays are selected from proton-proton collision data collected by the LHCb experiment at a centre-of-mass energy of 13 TeV and corresponding to an integrated luminosity of 5.4 fb−1. The flavour oscillation parameters, relating to the differences in mass and width of the mass eigenstates, are found to be y′ = (5.8 ± 1.6) × 10−3 and (x′)2 = (0.0 ± 1.2) × 10−4. No evidence for charge-parity violation is seen either in the flavour oscillations or in the decay, where the direct charge-parity asymmetry is measured to be AD = (2.3 ± 1.7) %.
650		4	\|a Charm Physics
650		4	\|a CP Violation
650		4	\|a Hadron-Hadron Scattering
650		4	\|a Oscillation
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SRT			\|a LHCBCOLLABSEARCHFORC1920

Search for charge-parity violation in semileptonically tagged D0 → K+π− decays

MARC

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