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  • Measurement of the CKM angl...
    Aiola, S.; Artamonov, A.; Balagura, V.; Bediaga, I.; Belavin, V.; Belous, K.; Ben-Haim, E.; Bhom, J.; Birch, M.; Bjørn, M.; Blake, T.; Boelhauve, J. A.; Brea Rodriguez, A.; Bursche, A.; Calabrese, R.; Campoverde Quezada, A. F.; Capelli, S.; Cardini, A.; Chatzikonstantinidis, G.; Chen, S.; Coco, V.; Cogan, J.; Collins, P.; Corti, G.; De Aguiar Francisco, O.; Dean, W.; Denysenko, V.; Derkach, D.; Dijkstra, H.; Dufour, L.; Ely, S.; Fernandez Declara, P.; Gallorini, S.; Gerick, D.; Gioventù, A.; Grammatico, T.; Graugés, E.; Guz, Y.; Halewood-leagas, T.; Harnew, N.; He, J.; Henry, L.; Jacobsson, R.; Jost, B.; Kholodenko, S.; Kirn, T.; Korolev, M.; Kotriakhova, S.; Langenbruch, C.; Langer, J.; Li, X.; Liu, G.; Liu, H.; Longstaff, I.; Luppi, E.; Lyu, X.; Maddrell-Mander, S.; Marin Benito, C.; Marks, J.; Martinazzoli, L.; Martinelli, M.; Matiunin, V.; Mazurek, M.; Merli, A.; Meyer Garcia, L.; Morandin, M.; Nakada, T.; Nguyen, T. D.; Nikitin, N.; Oyanguren, A.; Pappalardo, L. L.; Parkes, C.; Petridis, K.; Philippov, A.; Piccini, M.; Pietrzyk, B.; Pisani, F.; Rollings, A.; Sanchez Mayordomo, C.; Santacesaria, R.; Schopper, A.; Schwemmer, R.; Shen, Z.; Siddi, B. G.; Snoch, A.; Soares Lavra, L.; Soler, F. J. P.; Spadaro Norella, E.; Stenyakin, O.; Swientek, K.; Tang, Z.; Unverzagt, D. J.; Vieites Diaz, M.; Vitali, G.; Wang, Y.; Ward, D. R.; Weber, S. G.; White, D. J.; Wormser, G.; Yao, Y.

    The journal of high energy physics, 02/2021, Letnik: 2021, Številka: 2
    Journal Article

    A bstract A measurement of CP -violating observables is performed using the decays B ± → DK ± and B ± → Dπ ± , where the D meson is reconstructed in one of the self-conjugate three-body final states $$ {K}_{\mathrm{S}}^0 $$ K S 0 π + π − and $$ {K}_{\mathrm{S}}^0 $$ K S 0 K + K − (commonly denoted $$ {K}_{\mathrm{S}}^0 $$ K S 0 h + h − ). The decays are analysed in bins of the D -decay phase space, leading to a measurement that is independent of the modelling of the D -decay amplitude. The observables are inter- preted in terms of the CKM angle γ . Using a data sample corresponding to an integrated luminosity of 9 fb − 1 collected in proton-proton collisions at centre-of mass energies of 7, 8, and 13 TeV with the LHCb experiment, γ is measured to be $$ \left({68.7}_{-5.1}^{+5.2}\right){}^{\circ} $$ 68.7 − 5.1 + 5.2 ° . The hadronic parameters $$ {r}_B^{D K},{r}_B^{D\pi},{\delta}_B^{D K},\kern0.5em \mathrm{and}\kern0.5em {\delta}_B^{D\pi} $$ r B DK , r B Dπ , δ B DK , and δ B Dπ , which are the ratios and strong-phase differences of the suppressed and favoured B ± decays, are also reported.