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2011-10-04
Search for CP Violation in D Meson Decays to phi pi+
Belle CollaborationM. StaričH. AiharaK. ArinsteinD. M. AsnerT. AushevA. M. BakichA. BayV. BhardwajB. BhuyanA. BozekM. BračkoT. E. BrowderA. ChenP. ChenB. G. CheonK. ChilikinR. ChistovI. -S. ChoK. ChoY. ChoiZ. DoležalZ. DrásalS. EidelmanJ. E. FastV. GaurN. GabyshevB. GolobJ. HabaK. HayasakaY. HoriiY. HoshiW. -S. HouY. B. HsiungT. IijimaK. InamiA. IshikawaR. ItohM. IwabuchiY. IwasakiT. IwashitaT. JuliusJ. H. KangT. KawasakiC. KieslingH. J. KimH. O. KimJ. B. KimK. T. KimM. J. KimY. J. KimK. KinoshitaB. R. KoN. KobayashiS. KoblitzP. KodyšS. KorparP. KrižanT. KumitaY. -J. KwonJ. S. LangeS. -H. LeeJ. LiY. LiJ. LibbyC. LiuZ. Q. LiuR. LouvotS. McOnieK. MiyabayashiH. MiyataY. MiyazakiG. B. MohantyE. NakanoZ. NatkaniecS. NishidaO. NitohT. NozakiT. OhshimaS. OkunoS. L. OlsenG. PakhlovaH. K. ParkK. S. ParkR. PestotnikM. PetričL. E. PiilonenM. RöhrkenS. RyuH. SahooK. SakaiY. SakaiT. SanukiO. SchneiderC. SchwandaA. J. SchwartzO. SeonM. E. SeviorV. ShebalinC. P. ShenT. -A. ShibataJ. -G. ShiuB. ShwartzF. SimonP. SmerkolY. -S. SohnA. SokolovS. StaničM. SumihamaK. SumisawaG. TatishviliY. TeramotoK. TrabelsiM. UchidaS. UeharaT. UglovY. UnnoS. UnoP. UrquijoG. VarnerA. VossenC. H. WangM. -Z. WangM. WatanabeY. WatanabeK. M. WilliamsE. WonB. D. YabsleyY. YamashitaC. Z. YuanC. C. ZhangZ. P. ZhangV. ZhilichV. ZhulanovA. Zupanc
文献摘要
We search for CP violation in Cabibbo-suppressed charged D meson decays by measuring the difference between the CP violating asymmetries for the Cabibbo-suppressed decays D+ -> K+K-pi+ and the Cabibbo-favored decays Ds -> K+K-pi+ in the K+K- mass region of the phi resonance. Using 955/fb of data collected with the Belle detector we obtain A_CP(D+ -> phi pi+) = (+0.51 ± 0.28 ± 0.05)%. The measurement improves the sensitivity of previous searches by more than a factor of five. We find no evidence for direct CP violation.
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