Leonard Lesniak

Dalitz-plot analysis of B ± → K ± K + K − decays

Leonard Lesniak, P. Żenczykowski

We study B ± → K ± K + K − decays using the QCD factorization model with final state interactions between K + and K − mesons taken into account. The parameters of the model are fitted to the data of …

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Amplitude analysis of B 0 → K S 0 K + K − decays in a quasi-two-body QCD factorization approach

J.-P. Dedonder, R. Kamiński, Leonard Lesniak, B. Loiseau et autres

The B 0 → K S 0 K + K − decay amplitude is derived within a quasi-two-body QCD factorization framework in terms of kaon form factors and B 0 to two-kaon-transition functions. The final state kaon-kaon interactions in the S , …

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Dalitz-plot analysis of B+- --> K+-K+K- decays

Leonard Lesniak, P. Żenczykowski

We study B+- -- > K+-K+K- decays using the QCD factorization model with final state interactions between K+ and K- mesons taken into account. The parameters of the model are fitted to the data of the BABAR and LHCb collaborations. We describe …

Amplitude analysis of $ B^0 \to K^0_S K^+ K^-$ decays in a quasi-two-body QCD factorization approach

J.-P. Dedonder, R. Kamińsk, Leonard Lesniak, B. Loiseau et autres

The $B^0 \to K^0_S K^+ K^- $ decay amplitude is derived within a quasi-two-body QCD factorization framework in terms of kaon form factors and $B^0$ to two-kaon-transition functions. The final state kaon-kaon interactions in the $S$, $P$, and $D$ waves are taken …

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Dalitz plot studies of D0→KS0K+K− decays in a factorization approach

J.-P. Dedonder, R. Kamiński, Leonard Lesniak, B. Loiseau

The BABAR Collaboration data of the ${D}^{0}\ensuremath{\rightarrow}{K}_{S}^{0}{K}^{+}{K}^{\ensuremath{-}}$ process are analyzed within a quasi-two-body factorization framework. Starting from the weak effective Hamiltonian, one has to evaluate matrix elements of ${D}^{0}$ transitions to two kaons for the tree amplitudes and the transitions between one …

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Near threshold kaon-kaon interaction in the reactions ${e^ + }{e^ - } \to {K^ + }{K^ - }\gamma$ and ${e^ + }{e^ - } \to {K^0}{\bar K^0}\gamma$

Leonard Lesniak, Franciszek Sobczuk, Michał Silarski, F. Morawski

Strong interactions between pairs of the K+K− and mesons can be studied in radiative decays of ϕ(1020) mesons. We present a theoretical model of the reactions and . The K+K− and effective mass dependence of the differential cross sections is derived. The …

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Strong interaction between kaons in the reactions e+e−→K+K−γ and e+e−→K0K¯0γ

Leonard Lesniak, Franciszek Sobczuk, Michał Silarski, F. Morawski

A theoretical model of the reactions ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}{K}^{+}{K}^{\ensuremath{-}}\ensuremath{\gamma}$ and ${e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}{K}^{0}\overline{{K}^{0}}\ensuremath{\gamma}$ has been derived. The strong interaction between kaons is taken into account using a general form of the $K\overline{K}$ scattering amplitude. It is shown that some models formulated in the past are particular …

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Parametrizations of three-body hadronic B - and D -decay amplitudes in terms of analytic and unitary meson-meson form factors

Diogo Boito, J.-P. Dedonder, Bruno El-Bennich, Rafel Escribano et autres

We introduce parametrizations of hadronic three-body $B$ and $D$ weak decay amplitudes that can be readily implemented in experimental analyses and are a sound alternative to the simplistic and widely used sum of Breit-Wigner type amplitudes, also known as the isobar model. …

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Origin of a large CP asymmetry in B+- --> K+- K+ K- decays

Leonard Lesniak

Origin of a large CP asymmetry in B+- --> K+ K- K+ decays

Leonard Lesniak, P. Żenczykowski

Large $CP$-violating asymmetry effects in the B+- --> K+ K- K decays have been predicted in the QCD factorization model. The model includes strong K+ K- final-state long-distance interactions in the S-, P-, and also (in the recent analysis) D- wave two-body …

Origin of a large CP asymmetry in B+- --> K+ K- K+ decays

L. Leśniak, P. Żenczykowski

Large $CP$-violating asymmetry effects in the B+- --> K+ K- K decays have been predicted in the QCD factorization model. The model includes strong K+ K- final-state long-distance interactions in the S-, P-, and also (in the recent analysis) D- wave two-body …

Dalitz plot studies in hadronic charm decays

Leonard Lesniak

Recent studies of hadronic -meson decays are reported. Some experimental searches of CP-symmetry violation using model independent methods are presented. An importance of unitarity constraints in construction of phenomenological models of the D-meson decays is underlined. The theoretical model of the D0 …