Amplitude analysis of B0→ηc(1S)K+π- decays.
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| Title: | Amplitude analysis of B0→ηc(1S)K+π- decays. |
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| Authors: | Aaij, R.1 (AUTHOR), Abdelmotteleb, A.S.W.2 (AUTHOR), Beteta, C. Abellan3 (AUTHOR), Abudinén, F.2 (AUTHOR), Ackernley, T.4 (AUTHOR), Adefisoye, A. A.5 (AUTHOR), Adeva, B.6 (AUTHOR), Adinolfi, M.7 (AUTHOR), Adlarson, P.8 (AUTHOR), Agapopoulou, C.9 (AUTHOR), Aidala, C. A.10 (AUTHOR), Ajaltouni, Z.11 (AUTHOR), Akar, S.11 (AUTHOR), Akiba, K.1 (AUTHOR), Albicocco, P.12 (AUTHOR), Albrecht, J.13,14 (AUTHOR), Aleksiejunas, R.15 (AUTHOR), Alessio, F.16 (AUTHOR), Cartelle, P. Alvarez17 (AUTHOR), Amalric, R.18 (AUTHOR) |
| Source: | European Physical Journal C -- Particles & Fields. May2026, Vol. 86 Issue 5, p1-20. 20p. |
| Subjects: | Hadron decay, Branching ratios, Particle physics, Particle analysis, Resonance, Particle detectors |
| Abstract: | An amplitude analysis of the B 0 → η c (1 S) K + π - decays with η c (1 S) → p p ¯ is performed using a sample corresponding to an integrated luminosity of 9 fb - 1 of p p collision data collected by the LHCb detector at centre-of-mass energies of s = 7, 8 and 13 Te V . The data are described with a model including only intermediate contributions from known K ∗ 0 resonances. Evidence for an exotic resonance in the η c (1 S) π - system, reported in a previous analysis of this decay channel, is not confirmed. The inclusive branching fraction of the B 0 → η c (1 S) K + π - decays is measured to be B (B 0 → η c (1 S) K + π -) = (5.82 ± 0.20 ± 0.23 ± 0.55) × 10 - 4 , where the first uncertainty is statistical, the second systematic, and the third arises from the limited knowledge of external branching fractions. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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| Abstract: | An amplitude analysis of the B 0 → η c (1 S) K + π - decays with η c (1 S) → p p ¯ is performed using a sample corresponding to an integrated luminosity of 9 fb - 1 of p p collision data collected by the LHCb detector at centre-of-mass energies of s = 7, 8 and 13 Te V . The data are described with a model including only intermediate contributions from known K ∗ 0 resonances. Evidence for an exotic resonance in the η c (1 S) π - system, reported in a previous analysis of this decay channel, is not confirmed. The inclusive branching fraction of the B 0 → η c (1 S) K + π - decays is measured to be B (B 0 → η c (1 S) K + π -) = (5.82 ± 0.20 ± 0.23 ± 0.55) × 10 - 4 , where the first uncertainty is statistical, the second systematic, and the third arises from the limited knowledge of external branching fractions. [ABSTRACT FROM AUTHOR] |
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| ISSN: | 14346044 |
| DOI: | 10.1140/epjc/s10052-026-15474-w |
