Search for CP violation in D[superscript +] → ϕπ[superscript +] and D[+ over s] → K[0 over s]π[superscript +] decays
A search for CP violation in D[superscript +] → ϕπ[superscript +] decays is performed using data collected in 2011 by the LHCb experiment corresponding to an integrated luminosity of 1.0 fb[superscript −1] at a centre of mass energy of 7 TeV. The CP-violating asymmetry is measured to be (−0.04 ± 0.1...
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| Format: | Article |
| Language: | en_US |
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Springer-Verlag
2014
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| Online Access: | http://hdl.handle.net/1721.1/85180 https://orcid.org/0000-0001-8285-3346 |
| Summary: | A search for CP violation in D[superscript +] → ϕπ[superscript +] decays is performed using data collected in 2011 by the LHCb experiment corresponding to an integrated luminosity of 1.0 fb[superscript −1] at a centre of mass energy of 7 TeV. The CP-violating asymmetry is measured to be (−0.04 ± 0.14 ± 0.14)% for candidates with K[superscript −] K[superscript +] mass within 20 MeV/c[superscript 2] of the ϕ meson mass. A search for a CP-violating asymmetry that varies across the ϕ mass region of the D[superscript +] → K[superscript −] K[superscript +] π[superscript +] Dalitz plot is also performed, and no evidence for CP violation is found. In addition, the CP asymmetry in the D[+ over s] → K[0 over S]π[superscript +] decay is measured to be (0.61 ± 0.83 ± 0.14)%. |
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