Search for K S ( L ) 0 → π + π − μ + μ − decays at LHCb

Physical review. D/Physical review. D. 2026 Open access

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Authors: R. Aaij, A. S. W. Abdelmotteleb, Carlos Abellán Beteta, C. Abellán Beteta, T. Ackernley, A. A. Adefisoye, B. Adeva, M. Adinolfi, P. Adlarson, C. Agapopoulou, C. Aidala, Z. Ajaltouni
+88 more S. Akar, K. Carvalho Akiba, P. Albicocco, J. Albrecht, R. Aleksiejūnas, F. Alessio, P. Álvarez Cartelle, R. Amalric, S. Amato, S. Amato, Y. Amhis, L. An, L. Anderlini, M. Andersson, P. Andreola, M. Andreotti, Sergio Andres Estrada, Alessia Anelli, D. Ao, C. Arata, F. Archilli, Zaratsyan Areg, Matteo Argenton, S. Arguedas Cuendis, Lisa Arnone, A. Artamonov, M. Artuso, E. Aslanides, R. Ataíde Da Silva, M. Atzeni, B. Audurier, Juliette Authier, D. Bacher, I. Bachiller, S. Bachmann, Marie Bachmayer, John J Back, P. Baladrón Rodríguez, V. Balagura, Alessandra Balboni, W. Baldini, Zachary Baldwin, Luca Balzani, Huirong Bao, J. Baptista de Souza Leite, C. Barbero Pretel, M. Barbetti, I. R. Barbosa, Roger John Barlow, Mikhail Barnyakov, S. Barsuk, W. Barter, W. Barter, B. Batsukh, B. Batsukh, Piera Battista, A. Bay, A. Beck, M. Becker, F. Bedeschi, I. Bediaga, Noah Albin Behling, S. Belin, Alberto Bellavista, K. Belous, I. Belov, I. Belyaev, G. Benane, G. Bencivenni, E. Ben-Haim, Alexander Berezhnoy, R. Bernet, Sergi Bernet Andres, A. Bertolin, F. Betti, J. Bex, Oleg Bezshyyko, Senjuti Bhattacharya, J. Bhom, M. S. Bieker, N. V. Biesuz, Alice Biolchini, M. Birch, F. C. R. Bishop, A. Bitadze, A. Bizzeti, T. Blake, F. Blanc
DOI: 10.1103/s1dv-cv1t
Cited by: 0
References: 39

Abstract

A search for K S ( L ) 0 → π + π − μ + μ − decays is performed using proton-proton collision data collected by the LHCb experiment at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 5.4 fb − 1 . No K S ( L ) 0 → π + π − μ + μ − signals are found and upper limits are set for the first time on the branching fractions B ( K S 0 → π + π − μ + μ − ) < 1.4 × 10 − 9 and B ( K L 0 → π + π − μ + μ − ) < 6.6 × 10 − 7 , at the 90% confidence level.

Fields of Study & Subjects

Particle physics theoretical and experimental studies Quantum Chromodynamics and Particle Interactions High-Energy Particle Collisions Research

Publication details

Journal / source
Physical review. D/Physical review. D.
Volume
113
Issue
7
Publication date
13 February 2026
Language
EN