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  • Amplitude analysis of the D...
    Alfonso Albero, A.; Amey, J. L.; Amhis, Y.; Andersson, M.; Bachmann, S.; Baladron Rodriguez, P.; Bedeschi, F.; Bediaga, I. B.; Belavin, V.; Bitadze, A.; Boettcher, T.; Bouchiba, S. A.; Braun, S.; Bursche, A.; Caspary, R.; Cavallero, G.; Charles, M.; Chernyshenko, S.; Danilina, A.; Davies, J. E.; De Aguiar Francisco, O.; Dolmatov, A.; Downes, A. G.; Dufour, L.; Ek-In, S.; Fan, Y.; Fischer, K. M.; Foulds-Holt, D.; Garcia Martin, L. M.; Golutvin, A.; Gomes, A.; Graugés, E.; Gruberg Cazon, B. R.; Hadavizadeh, T.; Henderson, C.; Hicheur, A.; Hulsbergen, W.; Idzik, M.; Jurik, N.; Kholodenko, S.; Kirn, T.; Kondybayeva, A.; Kotriakhova, S.; Lacarrere, D.; Liu, G.; Luchuk, S.; Lukashenko, V.; Lupato, A.; Madhan Mohan, L. R.; Maevskiy, A.; Martinelli, M.; Mauricio, J.; McGrath, T. H.; Milanes, D. A.; Mitzel, D. S.; Monroy, I. A.; Murphy, C. H.; Pastore, A.; Petric, M.; Petrolini, A.; Petrov, A.; Petruzzo, M.; Pisani, F.; Pizzichemi, M.; Puill, V.; Raab, N. V.; Ramos Pernas, M.; Rodrigues, A. B.; Ruiz Fernandez, R. A.; Ryzhikov, A.; Salomoni, M.; Sanchez Gras, C.; Santamarina Rios, C.; Sarpis, M.; Satta, A.; Scherl, S.; Schmitt, S.; Schubiger, M.; Schulte, S.; Schwemmer, R.; Semennikov, A.; Shang, Y.; Stahl, M.; Swallow, P. N.; Tan, Y.; Tou, D. Y.; Ursov, E.; Valassi, A.; van Beuzekom, M.; Vesterinen, M.; Volle, F. C.; Websdale, D.; Williams, R.; Wu, H.; Xie, Y.; Zdybal, M.; Zhang, C.; Zhang, L.; Zharkova, A.; Zhou, T.

    The journal of high energy physics, 06/2023, Letnik: 2023, Številka: 6
    Journal Article

    A bstract An amplitude analysis of the D + → π − π + π + decay is performed with a sample corresponding to 1.5 fb − 1 of integrated luminosity of pp collisions at a centre-of-mass energy s = 8 TeV collected by the LHCb detector in 2012. The sample contains approximately six hundred thousand candidates with a signal purity of 95%. The resonant structure is studied through a fit to the Dalitz plot where the π − π + S-wave amplitude is extracted as a function of π − π + mass, and spin-1 and spin-2 resonances are included coherently through an isobar model. The S-wave component is found to be dominant, followed by the ρ (770) 0 π + and f 2 (1270) π + components. A small contribution from the ω (782) → π − π + decay is seen for the first time in the D + → π − π + π + decay.