Measurements of direct CP - violating asymmetries in charmless decays of bottom baryons CDF
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چکیده
We report final measurements of direct CP–violating asymmetries in charmless decays of neutral bottom hadrons to pairs of charged hadrons with the upgraded Collider Detector at the Fermilab Tevatron. Using the complete √ s = 1.96 TeV proton-antiproton collisions data set, corresponding to 9.3 fb−1 of integrated luminosity, we measure A(Λb → pπ−) = +0.06 ± 0.07(stat) ± 0.03(syst) and A(Λb → pK−) = −0.10±0.08(stat)±0.04(syst), compatible with no asymmetry. In addition we measure the CP–violating asymmetries in B0 s → K−π+ and B0 → K+π− decays to be A(B0 s → K−π+) = +0.22 ± 0.07stat) ± 0.02(syst) and A(B0 → K+π−) = −0.083 ± 0.013(stat) ± 0.004(syst), respectively, which are significantly different from zero and consistent with current world averages. DOI: https://doi.org/10.1103/PhysRevLett.113.242001 Posted at the Zurich Open Repository and Archive, University of Zurich ZORA URL: https://doi.org/10.5167/uzh-108355 Accepted Version Originally published at: CDF Collaboration; Canelli, F; Kilminster, B; et al (2014). Measurements of direct CP -violating asymmetries in charmless decays of bottom baryons. Physical Review Letters, 113(242001):online. DOI: https://doi.org/10.1103/PhysRevLett.113.242001 ar X iv :1 40 3. 55 86 v3 [ he pex ] 1 1 D ec 2 01 4 Measurements of Direct CP-Violating Asymmetries in Charmless Decays of Bottom
منابع مشابه
ar X iv : 1 40 3 . 55 86 v 3 [ he p - ex ] 1 1 D ec 2 01 4 Measurements of Direct CP - Violating Asymmetries in Charmless Decays of Bottom Baryons
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تاریخ انتشار 2017