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1811088074933796864
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MIT
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© 2017 The Author(s) A search for time-integrated CP violation in the Cabibbo-suppressed decay D0→π+π−π+π− is performed using an unbinned, model-independent technique known as the energy test. This is the first application of the energy test in four-body decays. The search is performed for P-even CP asymmetries and, for the first time, is extended to probe the P-odd case. Using proton–proton collision data corresponding to an integrated luminosity of 3.0 fb−1 collected by the LHCb detector at centre-of-mass energies of s=7 TeV and 8 TeV, the world's best sensitivity to CP violation in this decay is obtained. The data are found to be consistent with the hypothesis of CP symmetry with a p-value of (4.6±0.5)% in the P-even case, and marginally consistent with a p-value of (0.6±0.2)% in the P-odd case, corresponding to a significance for CP non-conservation of 2.7 standard deviations.
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2024-09-23T13:55:51Z
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Article
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mit-1721.1/132131
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Massachusetts Institute of Technology
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2024-09-23T13:55:51Z
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2021
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Elsevier BV
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dspace
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mit-1721.1/1321312022-04-01T17:58:53Z Search for CP violation in the phase space of D0→π+π−π+π− decays © 2017 The Author(s) A search for time-integrated CP violation in the Cabibbo-suppressed decay D0→π+π−π+π− is performed using an unbinned, model-independent technique known as the energy test. This is the first application of the energy test in four-body decays. The search is performed for P-even CP asymmetries and, for the first time, is extended to probe the P-odd case. Using proton–proton collision data corresponding to an integrated luminosity of 3.0 fb−1 collected by the LHCb detector at centre-of-mass energies of s=7 TeV and 8 TeV, the world's best sensitivity to CP violation in this decay is obtained. The data are found to be consistent with the hypothesis of CP symmetry with a p-value of (4.6±0.5)% in the P-even case, and marginally consistent with a p-value of (0.6±0.2)% in the P-odd case, corresponding to a significance for CP non-conservation of 2.7 standard deviations. 2021-09-20T18:21:07Z 2021-09-20T18:21:07Z 2017 2018-10-11T13:17:20Z Article http://purl.org/eprint/type/JournalArticle 03702693 https://hdl.handle.net/1721.1/132131 Aaij, R., et al. "Search for Cp Violation in the Phase Space of D0�?�p+?-?+?- Decays." Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 769 (2017): 345-56. http://dx.doi.org/10.1016/J.PHYSLETB.2017.03.062 Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics Creative Commons Attribution 4.0 International License Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ application/pdf Elsevier BV Elsevier
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| spellingShingle |
Search for CP violation in the phase space of D0→π+π−π+π− decays
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| title |
Search for CP violation in the phase space of D0→π+π−π+π− decays
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| title_full |
Search for CP violation in the phase space of D0→π+π−π+π− decays
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| title_fullStr |
Search for CP violation in the phase space of D0→π+π−π+π− decays
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| title_full_unstemmed |
Search for CP violation in the phase space of D0→π+π−π+π− decays
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| title_short |
Search for CP violation in the phase space of D0→π+π−π+π− decays
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| title_sort |
search for cp violation in the phase space of d0 π π π π decays
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| url |
https://hdl.handle.net/1721.1/132131
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