Search Results - "Hernandez Villanueva, M."
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Evidence for X ( 3872 ) → J / ψ π + π − Produced in Single-Tag Two-Photon Interactions
Published in Physical review letters (23-03-2021)Get full text
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First search for the $\eta_{c2}(1D)$ in $B$ decays at Belle
Published in The journal of high energy physics (08-05-2020)“…The first dedicated search for the ηc2(1D) is carried out using the decaysB+ → ηc2(1D)K+, B0 → ηc2(1D)K0S, B0 → ηc2(1D)π−K+, and B+ → ηc2(1D)π+K0Swith ηc2(1D)…”
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3
Search for a Heavy Neutrino in τ Decays at Belle
Published in Physical review letters (24-11-2023)“…We report on a search for a heavy Majorana neutrino in the decays τ^{-}→π^{-}ν_{h}, ν_{h}→π^{±}ℓ^{∓}, ℓ=e, μ. The results are obtained using the full data…”
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4
Effective-field theory analysis of the τ − → η (′) π − ν τ decays
Published in The journal of high energy physics (01-12-2017)“…The rare τ− → η(′)π−ντ decays, which are suppressed by G-parity in the Standard Model (SM), can be sensitive to the effects of new interactions. We study the…”
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5
Measurement of Differential Branching Fractions of Inclusive B → X u ℓ + ν ℓ Decays
Published in Physical review letters (22-12-2021)Get full text
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Measurements of the Branching Fractions of the Semileptonic Decays Ξ c 0 → Ξ − ℓ + ν ℓ and the Asymmetry Parameter of Ξ c 0 → Ξ − π
Published in Physical review letters (17-09-2021)Get full text
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Search for lepton-flavor-violating tau-lepton decays to ℓγ at Belle
Published in The journal of high energy physics (04-10-2021)“…Charged lepton flavor violation is forbidden in the Standard Model but possible in several new physics scenarios. In many of these models, the radiative decays…”
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Evidence for X(3872)→J/ψπ^{+}π^{-} Produced in Single-Tag Two-Photon Interactions
Published in Physical review letters (26-03-2021)“…We report the first evidence for X(3872) production in two-photon interactions by tagging either the electron or the positron in the final state, exploring the…”
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Search for the dark photon in B0 → A'A', A' → e+e–, μ+μ–, and π+π– decays at Belle
Published in The journal of high energy physics (20-04-2021)“…Abstract We present a search for the dark photon A' in the B0 → A'A' decays, where A' subsequently decays to e+e-, μ+μ-, and π+π-. The search is performed by…”
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10
First search for the ηc2(1$D$) in $B$ decays at Belle
Published in The journal of high energy physics (08-05-2020)“…The first dedicated search for the ηc2(1D) is carried out using the decays B+ → ηc2(1D)K+, B0 → ηc2(1D)K$0\atop{S}$, B0 → ηc2(1D)π-K+, and B+ → ηc2(1D)π…”
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Measurement of Differential Branching Fractions of Inclusive B→X_{u}ℓ^{+}ν_{ℓ} Decays
Published in Physical review letters (24-12-2021)“…The first measurements of differential branching fractions of inclusive semileptonic B→X_{u}ℓ^{+}ν_{ℓ} decays are performed using the full Belle data set of…”
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12
Effective-field theory analysis of the τ− → η(′)π−ντ decays
Published in The journal of high energy physics (01-12-2017)“…A bstract The rare τ − → η (′) π − ν τ decays, which are suppressed by G -parity in the Standard Model (SM), can be sensitive to the effects of new…”
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Search for the dark photon in B 0 → A′A′, A′ → e + e − , μ + μ − , and π + π − decays at Belle
Published in The journal of high energy physics (01-04-2021)“…Abstract We present a search for the dark photon A′ in the B 0 → A′A′ decays, where A′ subsequently decays to e + e − , μ + μ − , and π + π − . The search is…”
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15
Search for B + → K + ν ν ¯ Decays Using an Inclusive Tagging Method at Belle II
Published in Physical review letters (29-10-2021)“…A search for the flavor-changing neutral-current decay B+ →K+$ν\bar{ν}$ is performed at the Belle II experiment at the SuperKEKB asymmetric energy…”
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Sustainable computing workshops in high-energy physics at DESY
Published 03-10-2024“…This perspective article details the program of sustainable computing workshops launched within the High Energy Physics department at DESY in 2023. The…”
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Measurement of the Λ c + Lifetime
Published in Physical review letters (16-02-2023)“…An absolute measurement of the $\Lambda^{+}_c$ lifetime is reported using $\Lambda_c^+\rightarrow pK^-\pi^+$ decays in events reconstructed from data collected…”
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Belle II grid-based user analysis
Published 14-03-2022“…The Belle II experiment at the SuperKEKB accelerator is a next-generation B-factory aiming to collect 50 ab$^{-1}$, about 50 times the data collected at Belle,…”
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Measurement of CP Violation in B0 → KS0π0 Decays at Belle II
Published in Physical review letters (14-09-2023)“…We report a measurement of the $C\!P$-violating parameters $A$ and $S$ in $B^{0}\to K_{S}^{0} \pi^{0}$ decays at Belle II using a sample of $387\times 10^{6}$…”
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Measurement of Angular Coefficients of B ¯ → D ℓ ν ¯ ℓ : Implications for | V c b | and Tests of Lepton Flavor Universality
Published in Physical review letters (24-09-2024)“…We measure the complete set of angular coefficients J i for exclusive B ¯ → D * ℓ ν ¯ ℓ decays ( ℓ = e , μ ). Our analysis uses the full 711 fb − 1 Belle…”
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