Light Higgs particle in decays of K and η mesons

H. Leutwyler; M. A. Shifman

doi:10.1016/0550-3213(90)90475-S

Light Higgs particle in decays of K and η mesons

H. Leutwyler, M. A. Shifman

Physics and Astronomy (Twin Cities)

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Abstract

We present a complete theoretical analysis of the decay amplitude K → πH and η → πH, where H is a hypothetical light Higgs particle. The analysis is based on the consistent use of the effective chiral lagrangian technique. In the K → πH transition the so-called "second constant" - the last undetermined part of the amplitude - is evaluated. Its contribution is shown to be relatively small and not important numerically. The η → πH amplitude is of order p⁴. We demonstrate that it is reliably calculable in terms of low-energy constants which are known from the phenomenology of the Goldstone mesons.

Original language	English (US)
Pages (from-to)	369-397
Number of pages	29
Journal	Nuclear Physics, Section B
Volume	343
Issue number	2
DOIs	https://doi.org/10.1016/0550-3213(90)90475-S
State	Published - Oct 22 1990

Bibliographical note

Funding Information:
* Work supported in part by Schweizerischer Nationalfonds. **On leave of absence from the Institute of Theoretical and Experimental Physics, Moscow 117259,

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10.1016/0550-3213(90)90475-S

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title = "Light Higgs particle in decays of K and η mesons",

abstract = "We present a complete theoretical analysis of the decay amplitude K → πH and η → πH, where H is a hypothetical light Higgs particle. The analysis is based on the consistent use of the effective chiral lagrangian technique. In the K → πH transition the so-called {"}second constant{"} - the last undetermined part of the amplitude - is evaluated. Its contribution is shown to be relatively small and not important numerically. The η → πH amplitude is of order p4. We demonstrate that it is reliably calculable in terms of low-energy constants which are known from the phenomenology of the Goldstone mesons.",

author = "H. Leutwyler and Shifman, {M. A.}",

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T1 - Light Higgs particle in decays of K and η mesons

AU - Leutwyler, H.

AU - Shifman, M. A.

N1 - Funding Information: * Work supported in part by Schweizerischer Nationalfonds. **On leave of absence from the Institute of Theoretical and Experimental Physics, Moscow 117259,

PY - 1990/10/22

Y1 - 1990/10/22

N2 - We present a complete theoretical analysis of the decay amplitude K → πH and η → πH, where H is a hypothetical light Higgs particle. The analysis is based on the consistent use of the effective chiral lagrangian technique. In the K → πH transition the so-called "second constant" - the last undetermined part of the amplitude - is evaluated. Its contribution is shown to be relatively small and not important numerically. The η → πH amplitude is of order p4. We demonstrate that it is reliably calculable in terms of low-energy constants which are known from the phenomenology of the Goldstone mesons.

AB - We present a complete theoretical analysis of the decay amplitude K → πH and η → πH, where H is a hypothetical light Higgs particle. The analysis is based on the consistent use of the effective chiral lagrangian technique. In the K → πH transition the so-called "second constant" - the last undetermined part of the amplitude - is evaluated. Its contribution is shown to be relatively small and not important numerically. The η → πH amplitude is of order p4. We demonstrate that it is reliably calculable in terms of low-energy constants which are known from the phenomenology of the Goldstone mesons.

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SP - 369

EP - 397

JO - Nuclear Physics, Section B

JF - Nuclear Physics, Section B

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ER -

Light Higgs particle in decays of K and η mesons

Abstract

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