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2014-09

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cc-by (c) Camboni, Alessandro et al., 2014
Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/185623

Measurement of the CP-violating phase phi(s) in (B)over-bar(s)(0) -> J / psi pi(+)pi(-) decays

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Abstract

The mixing-induced CP-violating phase φs in B0 s and B0 s decays is measured using the J/ψ π+π − final state in data, taken from 3 fb−1 of integrated luminosity, collected with the LHCb detector in 7 and 8 TeV centre-of-mass pp collisions at the LHC. A time-dependent flavour-tagged amplitude analysis, allowing for direct CP violation, yields a value for the phase φs = 70 ± 68 ± 8 mrad. This result is consistent with the Standard Model expectation and previous measurements.

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https://doi.org/10.1016/j.physletb.2014.06.079

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Hadrons, Gran Col·lisionador d'Hadrons, Física de partícules, Experiments

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Hadrons, Large Hadron Collider (France and Switzerland), Particle physics, Experiments

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Articles publicats en revistes (Física Quàntica i Astrofísica)

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CAMBONI, Alessandro, et al. Measurement of the CP-violating phase phi(s) in (B)over-bar(s)(0) -> J / psi pi(+)pi(-) decays. Physics Letters B. 2014. Vol. 736, num. 186-195. ISSN 0370-2693. [consulted: 10 of October of 2026]. Available at: https://hdl.handle.net/2445/185623

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