In this work we study possible connections between B-meson anomalies and Kaon physics observables in the context of combined solutions with the singlet and triplet scalar leptoquarks S-1 and S-3. By assuming a flavor structure for the leptoquark couplings dictated by a minimally broken U(2)(5) flavor symmetry we can make a sharp connection between these two classes of observables. We find that the bound on B(K+ -> pi(+)nu nu) from NA62 puts already some tension in the model, while the present limits on B(K-L -> mu(+)mu(-)) and mu -> e conversion in nuclei can be saturated. Relaxing instead the flavor assumption we study what values for B(K+ -> pi(+)nu nu), as well as for B(K-L -> pi(0)nu nu) and B(K-L,K-S -> mu(+)mu(-)), are viable compatibly with all other phenomenological constraints.

From B-meson anomalies to Kaon physics with scalar leptoquarks / Marzocca, David; Trifinopoulos, Sokratis; Venturini, Elena. - In: EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS. - ISSN 1434-6052. - 82:4(2022), pp. 1-24. [10.1140/epjc/s10052-022-10271-7]

From B-meson anomalies to Kaon physics with scalar leptoquarks

David Marzocca;Elena Venturini
2022-01-01

Abstract

In this work we study possible connections between B-meson anomalies and Kaon physics observables in the context of combined solutions with the singlet and triplet scalar leptoquarks S-1 and S-3. By assuming a flavor structure for the leptoquark couplings dictated by a minimally broken U(2)(5) flavor symmetry we can make a sharp connection between these two classes of observables. We find that the bound on B(K+ -> pi(+)nu nu) from NA62 puts already some tension in the model, while the present limits on B(K-L -> mu(+)mu(-)) and mu -> e conversion in nuclei can be saturated. Relaxing instead the flavor assumption we study what values for B(K+ -> pi(+)nu nu), as well as for B(K-L -> pi(0)nu nu) and B(K-L,K-S -> mu(+)mu(-)), are viable compatibly with all other phenomenological constraints.
2022
82
4
1
24
320
10.1140/epjc/s10052-022-10271-7
http://arxiv.org/abs/2106.15630v2
Marzocca, David; Trifinopoulos, Sokratis; Venturini, Elena
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11767/132011
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