Wick rotation in the light-front

Melo, J. P. B. C. de; Gambin, E.; Frederico, T.

doi:10.22323/1.061.0003

Cited by 2 publications

(10 citation statements)

References 5 publications

(10 reference statements)

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“…The vertex meson − qq model used to build the Bethe-Salpeter amplitude is writing with the function [2,7] Λ…”

Section: Bethe-salpeter Amplitude Model and Wick Rotationmentioning

confidence: 99%

“…In order to integrate the equation above, the Wick rotation [10] is formulated in the light-front approach [7]. With the instant form approach, the Wick rotation consist in change the timemomentum by the complex time momentum, k 0 −→ ık 0 [1].…”

Section: Bethe-salpeter Amplitude Model and Wick Rotationmentioning

confidence: 99%

“…The observables after the inclusion of the non-valence component are the same calculated with the equal time quantum field theory [1]. In the light-front approach, the Wick rotation is applied in order to avoid the singularities associated with the poles in the Bethe-Salpter amplitudes in the calculated matriz elements of the electromagnetic current [7].…”

Section: Bethe-salpeter Amplitude Model and Wick Rotationmentioning

confidence: 99%

“…The model utilized in the present work is the a relativistic constituent covariant quark model (Light-front covariant model,LFCM) [7], formulated with the light-front form of dynamics, proposed by Dirac [8] (see the reference [9] for details).…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

The Pion Electromagnetic Form Factor in the Light-Front Approach

Melo¹,

Frederico²

2010

Proceedings of Light Cone 2010: Relativistic Hadronic and Particle Physics — PoS(LC2010)

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We study in the present work, the properties of pseudo-scalar light meson, in particular the elastic electromagnetic form factors and the decay constant for pseudoscalar mesons; also the transition form factor for the pion. In the case of the calculation for the elastic electromagnetic form factors and the decay constants, the model used is the covariant light front model (LFCM), utilized in a previus work in the heavy hadronic sector. For the transition form factor, the models of the wave functions employed are the gaussian and the hydrogen-atom wave function. The pion system is compose by constituents confined quark-antiquark pair bound state, wich in the present model is given by the Pauli-Villars regulators in order to regularize the Beth-Salpeter amplitudes.

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“…The vertex meson − qq model used to build the Bethe-Salpeter amplitude is writing with the function [2,7] Λ…”

Section: Bethe-salpeter Amplitude Model and Wick Rotationmentioning

confidence: 99%

Section: Bethe-salpeter Amplitude Model and Wick Rotationmentioning

confidence: 99%

Section: Bethe-salpeter Amplitude Model and Wick Rotationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The Pion Electromagnetic Form Factor in the Light-Front Approach

Melo¹,

Frederico²

2010

Proceedings of Light Cone 2010: Relativistic Hadronic and Particle Physics — PoS(LC2010)

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“…This motivates us to study the semileptonic decay of D mesons within a light-front covariant model (LFCM) proposed in ref. [13] and applied to cal-culate the pion, kaon and D electromagnetic form factors.…”

Section: Introductionmentioning

confidence: 99%

Light-Front model of transition form-factors in heavy meson decay

Melo

Frederico

2010

Nuclear Physics B - Proceedings Supplements

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Electroweak transition form factors of heavy meson decays are important ingredients in the extraction of the Cabibbo-Kobayashi-Maskawa (CKM) matrix elements from experimental data. In this work, within a light-front framework, we calculate electroweak transition form factor for the semileptonic decay of D mesons into a pion or a kaon. The model results underestimate in both cases the new data of CLEO for the larger momentum transfers accessible in the experiment. We discuss possible reasons for that in order to improve the model.

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Wick rotation in the light-front

Cited by 2 publications

References 5 publications

The Pion Electromagnetic Form Factor in the Light-Front Approach

The Pion Electromagnetic Form Factor in the Light-Front Approach

Light-Front model of transition form-factors in heavy meson decay

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