τ- → K-η(′)ντ decays in Chiral Perturbation Theory with resonances

被引：31

作者：

Escribano, R. ^{[1
]}

Gonzalez-Solis, S.

Roig, P.

机构：

[1] Univ Autonoma Barcelona, Dept Fis, Grp Fis Teor, E-08193 Bellaterra, Barcelona, Spain

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2013年 / 10期

关键词：

QCD Phenomenology; Phenomenological Models; STRANGE-QUARK MASS; VECTOR FORM-FACTOR; ELECTROWEAK RADIATIVE-CORRECTIONS; OFF-SHELL WIDTH; EXCLUSIVE PROCESSES; MESON-MESON; V-US; PION; SCATTERING; MODEL;

D O I：

10.1007/JHEP10(2013)039

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We have studied the tau(-) -> K-eta(()'())nu(tau) decays within Chiral Perturbation Theory including resonances as explicit degrees of freedom. We have considered three different form factors according to treatment of final-state interactions. In increasing degree of soundness: Breit-Wigner, exponential resummation and dispersive representation. We find that although the first one fails in accounting for the data on the K eta mode, the other two approaches provide good fits to them which are sensitive to the K-star(1410) pole parameters, that are determined to be M-K star' = (1330(-41)(+27)) MeV and Gamma(K star') = 217(-122)(+68)) MeV. These values are competitive with the standard determination from tau(-) -> (K pi)(-)nu(tau) decays. The corresponding predictions for the tau(-) -> K-eta'nu(tau) channel respect the current upper bound and hint to the discovery of this decay mode in the near future.

引用

页数：28

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[31] From OPE to chiral perturbation theory in holographic QCD [J].

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[32] Decuplet to octet baryon transitions in chiral perturbation theory [J].

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[33] Measurement of CP asymmetry in D0 → K- K+ and D0 → π- π+ decays [J].

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Adeva, B. ;

Adinolfi, M. ;

Affolder, A. ;

Ajaltouni, Z. ;

Albrecht, J. ;

Alessio, F. ;

Alexander, M. ;

Ali, S. ;

Alkhazov, G. ;

Cartelle, P. Alvarez ;

Alves, A. A., Jr. ;

Amato, S. ;

Amerio, S. ;

Amhis, Y. ;

An, L. ;

Anderlini, L. ;

Anderson, J. ;

Andreassen, R. ;

Andreotti, M. ;

Andrews, J. E. ;

Appleby, R. B. ;

Gutierrez, O. Aquines ;

Archilli, F. ;

Artamonov, A. ;

Artuso, M. ;

Aslanides, E. ;

Auriemma, G. ;

Baalouch, M. ;

Bachmann, S. ;

Back, J. J. ;

Badalov, A. ;

Balagura, V. ;

Baldini, W. ;

Barlow, R. J. ;

Barschel, C. ;

Barsuk, S. ;

Barter, W. ;

Batozskaya, V. ;

Bauer, Th ;

Bay, A. ;

Beaucourt, L. ;

Beddow, J. ;

Bedeschi, F. ;

Bediaga, I. ;

Belogurov, S. ;

Belous, K. ;

Belyaev, I. ;

Ben-Haim, E. ;

Bencivenni, G. .

JOURNAL OF HIGH ENERGY PHYSICS, 2014, (07)

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[35] Finite volume at two-loops in chiral perturbation theory [J].

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Jamin, M. .

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[37] K- p → Σ0π0 reaction at low energies in a chiral quark model [J].

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[38] Neutral-current weak pion production off the nucleon in covariant chiral perturbation theory [J].

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[39] Exploring new physics contributions to CP violation in τ- → K- π0ντ [J].

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[40] Effective-field theory analysis of the τ- → π-π0ντ decays [J].

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