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J.Ursov, E.Usachov, A.Ustyuzhanin, A.Uwer, U.Vagner, A.Vagnoni, V.Valassi, A.Valenti, G.Valls Canudas, N.van Beuzekom, M.Van Dijk, M.Van Hecke, H.van Herwijnen, E.Van Hulse, C. B.van Veghel, M.Vazquez Gomez, R.Vazquez Regueiro, P.Sierra, C. VazquezVecchi, S.Velthuis, J. J.Veltri, M.Venkateswaran, A.Veronesi, M.Vesterinen, M.Vieira, D.Diaz, M. VieitesVilasis-Cardona, X.Figueras, E. VilellaVilla, A.Vincent, P.Volle, F. C.vom Bruch, D.Vorobyev, A.Vorobyev, V.Voropaev, N.Vos, K.Vrahas, C.Waldi, R.Walsh, J.Wan, G.Wang, C.Wang, J.Wang, M.Wang, R.Wang, X.Wang, Y.Wang, Z.Ward, J. A.Watson, N. K.Weber, S. G.Websdale, D.Wei, Y.Weisser, C.Westhenry, B. D. C.White, D. J.Whitehead, M.Wiederhold, A. R.Wiedner, D.Wilkinson, G.Wilkinson, M. K.Williams, I.Williams, M.Williams, M. R. J.Williams, R.Wilson, F. F.Wislicki, W.Witek, M.Witola, L.Wong, C. P.Wormser, G.Wotton, S. A.Wu, H.Wyllie, K.Xiang, Z.Xiao, D.Xie, Y.Xu, A.Xu, J.Xu, L.Xu, M.Xu, Q.Xu, Z.Yang, D.Yang, S.Yang, Y.Yang, Z.Yeomans, L. E.Yeroshenko, V.Yeung, H.Yin, H.Yu, J.Yuan, X.Zaffaroni, E.Zavertyaev, M.Zdybal, M.Zenaiev, O.Zeng, M.Zhang, C.Zhang, D.Zhang, L.Zhang, S.Zhang, Y.Zharkova, A.Zhelezov, A.Zheng, Y.Zhou, T.Zhou, X.Zhou, Y.Zhovkovska, V.Zhu, X.Zhu, Z.Zhukov, V.Zou, Q.Zucchelli, S.Zuliani, D.Zunica, G.2023-09-252023-09-252023-09-252023-06-0910.1007/JHEP06(2023)044https://infoscience.epfl.ch/handle/20.500.14299/201023WOS:001035565600001An amplitude analysis of the D+-> (-)pi(+)pi(+) decay is performed with a sample corresponding to 1.5 fb(-1) of integrated luminosity of pp collisions at a centre-of-mass energy root 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 pi(-)pi(+) S-wave amplitude is extracted as a function of pi(-)pi(+) 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 rho(770)(0)pi(+) and f(2)(1270)pi(+) components. A small contribution from the omega(782) -> pi(-)pi(+) decay is seen for the first time in the D+-> pi(-)pi(+)pi(+) decay.Physics, Particles & FieldsPhysicscharm physicshadron-hadron scatteringparticle and resonance productionhigh-statisticslightcmd-2d+Amplitude analysis of the D+-> pi(-)pi(+)pi(+) decay and measurement of the pi(-)pi(+) S-wave amplitudetext::journal::journal article::research article