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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/132849
First Experimental Study of Photon Polarization in Radiative B0s Decays
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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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BADALOV, Alexey, et al. First Experimental Study of Photon Polarization in Radiative B0s Decays. Physical Review Letters. 2017. Vol. 118, num. 2, pags. 021801. ISSN 0031-9007. [consulted: 11 of August of 2026]. Available at: https://hdl.handle.net/2445/132849