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Dalitz plot analysis of the $D^+\to K^-K^+K^+$ decay

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arxiv 1902.05884 v3 pith:SRKGGDHX submitted 2019-02-15 hep-ex

LHCb Collaboration: R. Aaij , B. Adeva , M. Adinolfi , Z. Ajaltouni , S. Akar , J. Albrecht , F. Alessio , M. Alexander
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A. Alfonso Albero S. Ali G. Alkhazov P. Alvarez Cartelle A.A. Alves Jr S. Amato S. Amerio Y. Amhis L. An L. Anderlini G. Andreassi M. Andreotti J.E. Andrews R.B. Appleby F. Archilli J. Arnau Romeu A. Artamonov M. Artuso E. Aslanides M. Atzeni G. Auriemma M. Baalouch I. Babuschkin S. Bachmann J.J. Back A. Badalov C. Baesso S. Baker V. Balagura W. Baldini A. Baranov R.J. Barlow C. Barschel S. Barsuk W. Barter F. Baryshnikov V. Batozskaya V. Battista A. Bay L. Beaucourt J. Beddow F. Bedeschi I. Bediaga A. Beiter L.J. Bel N. Beliy V. Bellee N. Belloli K. Belous I. Belyaev G. Bencivenni E. Ben-Haim S. Benson S. Beranek A. Berezhnoy R. Bernet D. Berninghoff E. Bertholet A. Bertolin C. Betancourt F. Betti M.O. Bettler Ia. Bezshyiko S. Bifani P. Billoir A. Birnkraut A. Bizzeti M. Bj{o}rn T. Blake F. Blanc S. Blusk V. Bocci T. Boettcher A. Bondar N. Bondar I. Bordyuzhin S. Borghi M. Borisyak M. Borsato F. Bossu M. Boubdir T.J.V. Bowcock E. Bowen C. Bozzi S. Braun J. Brodzicka D. Brundu E. Buchanan C. Burr A. Bursche J. Buytaert W. Byczynski (750 additional authors not shown)
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classification hep-ex
keywords decayamplitudeanalysiscontributiondalitzmodelphenomenologicalplot
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

The resonant structure of the doubly Cabibbo-suppressed decay $D^+ \to K^-K^+K^+$ is studied for the first time. The measurement is based on a sample of pp-collision data, collected at a centre-of-mass energy of 8 TeV with the LHCb detector and corresponding to an integrated luminosity of 2 fb$^-1$. The amplitude analysis of this decay is performed with the isobar model and a phenomenological model based on an effective chiral Lagrangian. In both models the S-wave component in the $K^-K^+$ system is dominant, with a small contribution of the $\phi(1020)$ meson and a negligible contribution from tensor resonances. The $K^-K^+$ scattering amplitudes for the considered combinations of spin (0,1) and isospin (0,1) of the two-body system are obtained from the Dalitz plot fit with the phenomenological decay amplitude.

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  1. Revisiting the $\Lambda_c^+ \to n\pi^+\eta$ decay in light of the BESIII measurement

    hep-ph 2026-08 conditional novelty 5.0 of 10

    The measured π+η mass spectrum of Λc+ → n π+ η is best reproduced by chiral-unitary models that include the N(1440) nucleon excitation; the a2(1320) tensor meson does not improve the fit.

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