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Badalov, Alexey; Calvo Gómez, Míriam; Camboni, Alessandro; Coquereau, Samuel; Garrido Beltrán, Lluís; Gascón Fora, David; Graciani Díaz, Ricardo; Graugés Pous, Eugeni; Marin Benito, Carla; Picatoste Olloqui, Eduardo; Rives Molina, Vicente José; Vilasis-Cardona, Xavier; LHCb Collaboration
Physical review letters, 01/2017, Letnik: 118Journal Article
The polarization of photons produced in radiative B-s(0) decays is studied for the first time. The data are recorded by the LHCb experiment in pp collisions corresponding to an integrated luminosity of 3 fb(-1) at center-of-mass energies of 7 and 8 TeV. A time-dependent analysis of the B-s(0) ->phi gamma decay rate is conducted to determine the parameter A(Delta), which is related to the ratio of right-over left-handed photon polarization amplitudes in b -> s gamma transitions. A value of A(Delta) = -0.98(-0.52)(-0.20)(+0.46)(+0.23) is measured. This result is consistent with the standard model prediction within 2 standard deviations.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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