<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>C</mml:mi><mml:mi>P</mml:mi></mml:math>violation: Dalitz interference,<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>C</mml:mi><mml:mi>P</mml:mi><mml:mi>T</mml:mi></mml:math>, and final state interactions

Nogueira, J. H. Alvarenga; Bediaga, I.; Cavalcante, A.B. Rodrigues; Frederico, T.; Lourenço, O.

doi:10.1103/physrevd.92.054010

Cited by 50 publications

(69 citation statements)

References 32 publications

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“…The constraint of CPT applied to the CP asymmetry in the hypotheses of no three-body rescattering contributions, as discussed in the previous section, imply that the integral over the phase space of the asymmetry, computed with Eq. (6), should vanish as discussed in detail in [11]. Concerning the linear term in cos θ, independently of the context it will vanish after integration over the phase-space once it is an odd-function.…”

Section: Model Independent Methods To Extractmentioning

confidence: 97%

“…(6), but integrated in s ⊥ , was used in [11] to explore different types of CP asymmetries in charmeless three-body B decays. The formula was applied in the fitting of the integrated experimental distributions released by the LHCb experiment [12].…”

Section: Model Independent Methods To Extractmentioning

confidence: 99%

“…These possible FSI, involving two, three or more hadrons, induced the idea that CPT constraints would not be of practical use in charmless B decays [9]. However, the high sample of experimental data, first with BaBar and Belle and then with LHCb, shows that these multi-mesons rescattering processes are not dominant in charmless multi body B decays [10,11].…”

Section: Introductionmentioning

confidence: 99%

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SuppressedB→PVCPasymmetry:CPTconstraint

et al. 2016

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Charge Parity asymmetry in charmless B meson decays is a key issue to be understood. Many theoretical calculations have been performed using short distance factorization approaches which, in general, do not take into account the CPT invariance constraint. For each channel with CP violation there is an equal amount of CP asymmetry in another channel or other channels, with an opposite sign. This happens if these channels are coupled through final state interactions (FSI). In the specific process B → P V , involving one pseudo-scalar and one vector particle in the final state, we argue that the CP asymmetry, inherent from a short distance mechanism, could be suppressed due to the CPT constraint. In this case, we propose a sensitive and practical experimental method to identify even a small CP asymmetry, which provides the values for A CP without the need for an amplitude analysis. This method, if applied directly to data, will enable to extract the CP asymmetry information in a model independent way and check to which extend the suggested suppression due to the CPT constraint is verified. * pmagalhaes@cbpf.br

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Section: Model Independent Methods To Extractmentioning

confidence: 97%

Section: Model Independent Methods To Extractmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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SuppressedB→PVCPasymmetry:CPTconstraint

et al. 2016

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“…This is because A CP in eq. (4.3) is only generated by a vector-scalar interference, which always comes with a cos θ π term, and hence the CP asymmetry always switches sign when comparing cos θ > 0 and cos θ < 0 (see also [35][36][37] for an elaborate discussion on these issues). However, if the CP asymmetry were dominated by two S or S-D wave interferences, the CP asymmetry would not switch sign, which could be an explanation for the behaviour in this region.…”

Section: Jhep10(2017)117mentioning

confidence: 99%

CP violation in multibody B decays from QCD factorization

Klein

Mannel

Virto

et al. 2017

J. High Energ. Phys.

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We test a data-driven approach based on QCD factorization for charmless three-body B-decays by confronting it to measurements of CP violation in B − → π − π + π − . While some of the needed non-perturbative objects can be directly extracted from data, some others can, so far, only be modelled. Although this approach is currently model dependent, we comment on the perspectives to reduce this model dependence. While our model naturally accommodates the gross features of the Dalitz distribution, it cannot quantitatively explain the details seen in the current experimental data on local CP asymmetries. We comment on possible refinements of our simple model and conclude by briefly discussing a possible extension of the model to large invariant masses, where large local CP asymmetries have been measured.

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“…Although absent in factorization approach [2], many authors [3,4,5,6,7,8] have shown that rescattering plays an important role in B decays. In particular, they proved the relevance for B twobody charmless decays of charm mesons rescattering into light ones, namely, in the understanding of the observed Branching fractions [5,8] and CP violation [3,4,5].…”

Section: Introductionmentioning

confidence: 99%

Charm rescattering contribution to charmless three-body $B$ decays

Magalhães¹,

Bediaga²,

Frederico³

2018

Proceedings of XVII International Conference on Hadron Spectroscopy and Structure — PoS(Hadron2017)

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Charm penguin diagrams are known to be the main contribution to charmless B decay process with strangeness variation equal to minus one which is the case of B ± → K ± K + K − decay. The large phase space available in this and other B three-body decays allows non trivial final state interactions with all sort of rescattering processes and also access high momentum transfers in the central region of the Dalitz plane. In this work we investigate the charm Penguin contribution to B ± → K ± K + K − , described by a hadronic triangle loop in the nonperturbative regions of the phase space, and by a partonic loop at the quasi perturbative region [1]. These nonresonant amplitudes have a particular structure in the Dalitz plane and their contributions to the final decay amplitude can be confirmed by a data amplitude analysis in this channel. In particular, the hadronic amplitude has a changing sign in the phase at DD threshold which can result in a change of sign for the CP asymmetry.

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CPviolation: Dalitz interference,CPT, and final state interactions

Cited by 50 publications

References 32 publications

SuppressedB→PVCPasymmetry:CPTconstraint

SuppressedB→PVCPasymmetry:CPTconstraint

CP violation in multibody B decays from QCD factorization

Charm rescattering contribution to charmless three-body $B$ decays

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