Search for CP Violation in the Decays D{sub (s)}{sup +{yields}}K{sub S}{sup 0{pi}+} and D{sub (s)}{sup +{yields}}K{sub S}{sup 0}K{sup +}

Journal Article · Fri May 07 00:00:00 EDT 2010 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.104.181602· OSTI ID:21410671

Ko, B R; Won, E; Ha, H; Lee, S -H ^[1]; Aihara, H; Iwasaki, M ^[2]; Aulchenko, V; Eidelman, S; Shebalin, V; Zhilich, V; Zyukova, O ^[3]; Aushev, T ^[4]; Bakich, A M; McOnie, S; Varvell, K E; Yabsley, B D ^[5]; Balagura, V; Liventsev, D; Mizuk, R; Pakhlov, P ^[6]

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1. Korea University, Seoul (Korea, Republic of)
2. Department of Physics, University of Tokyo, Tokyo (Japan)
3. Budker Institute of Nuclear Physics, Novosibirsk (Russian Federation)
4. Ecole Polytechnique Federale de Lausanne (EPFL), Lausanne (Switzerland)
5. School of Physics, University of Sydney, NSW 2006 (Australia)
6. Institute for Theoretical and Experimental Physics, Moscow (Russian Federation)

We have searched for CP violation in the charmed meson decays D{sub (s)}{sup +{yields}}K{sub S}{sup 0{pi}+} and D{sub (s)}{sup +{yields}}K{sub S}{sup 0}K{sup +} using 673 fb{sup -1} of data collected with the Belle detector at the KEKB asymmetric-energy e{sup +}e{sup -} collider. No evidence for CP violation is observed. We report the most sensitive CP asymmetry measurements to date for these decays: A{sub CP}{sup D+{yields}K}{sub S}{sup 0{pi}+}=(-0.71{+-}0.19{+-}0.20)%, A{sub CP}{sup D}{sub s}{sup +{yields}K}{sub S}{sup 0{pi}+}=(+5.45{+-}2.50{+-}0.33)%, A{sub CP}{sup D+{yields}K}{sub S}{sup 0K+}=(-0.16{+-}0.58{+-}0.25)%, and A{sub CP}{sup D}{sub s}{sup +{yields}K}{sub S}{sup 0K+}=(+0.12{+-}0.36{+-}0.22)%, where the first uncertainties are statistical and the second are systematic.

• OSTI ID: 21410671
• Journal Information: Physical Review Letters, Vol. 104, Issue 18; Other Information: DOI: 10.1103/PhysRevLett.104.181602; (c) 2010 The American Physical Society; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ASYMMETRY
B MESONS
CHARMED MESONS
CP INVARIANCE
ELECTRON-POSITRON COLLISIONS
KEK LINAC
PARTICLE DECAY
ACCELERATORS
BEAUTY MESONS
BEAUTY PARTICLES
BOSONS
CHARM PARTICLES
COLLISIONS
DECAY
ELECTRON COLLISIONS
ELEMENTARY PARTICLES
HADRONS
INVARIANCE PRINCIPLES
LINEAR ACCELERATORS
MESONS
POSITRON COLLISIONS
PSEUDOSCALAR MESONS