Y. -R. Lin

Study of $e^{+} e^{-} \to I^£^{0} I^£^{0}$ and $I^£^{+} I^£^{-}$ by Initial State Radiation Method at Belle

Belle Collaboration, G. Gong, L. K. Li +195

The processes $e^{+} e^{-} \to I^£^{0} I^£^{0}$ and $e^{+} e^{-} \to I^£^{+} I^£^{-}$ are studied using initial-state-radiation events in a sample of 980 $\,\mbox{fb}…

Search for a heavy neutral lepton that mixes predominantly with the tau neutrino

Belle Collaboration, M. Nayak, S. Dey +165

We report a search for a heavy neutral lepton (HNL) that mixes predominantly with $I^½_{I ¨} $ . The search utilizes data collected with the Belle detector at the KEKB asymmetric energy…

New graph-neural-network flavor tagger for Belle II and measurement of $sin 2 I ¨ _{1}$ in $B^{0} \to J / I ¨ K_{S}^{0}$ decays

Belle II Collaboration, I. Adachi, L. Aggarwal +413

We present GFlaT, a new algorithm that uses a graph-neural-network to determine the flavor of neutral $B$ mesons produced in $I^¥ (4 S)$ decays. It improves previous algorithms by usi…

First observation of $B \to D ˉ_{1} (\to D ˉ I ¨ ^{+} I ¨ ^{-}) ℓ^{+} I^½_{ℓ}$ and measurement of the $B \to D ˉ^{()} I ¨ ℓ^{+} I^½_{ℓ}$ and $B \to D ˉ^{()} I ¨ ^{+} I ¨ ^{-} ℓ^{+} I^½_{ℓ}$ branching fractions with hadronic tagging at Belle

Belle Collaboration, F. Meier, A. Vossen +202

We report measurements of the ratios of branching fractions for $B \to D ˉ^{(*)} I ¨ ℓ^{+} I^½_{ℓ}$ and $B \to D ˉ^{(*)} I ¨ ^{+} I ¨ ^{-} ℓ^{+} I^½_{ℓ}$ relative to $B \to \bar{D}^*\ell…

Search for a heavy neutrino in $I ¨ $ decays at Belle

Belle Collaboration, D. Liventsev, I. Adachi +189

We report on a search for a heavy neutrino in the decays $I ¨ ^{-} \to I ¨ ^{-} I^½_{h}$ , $I^½_{h} \to I ¨ ^{\pm} ℓ - +$ , $ℓ = e, I^¼$ . The results are obtained using the full data sample collect…

hep-ex2025

First Results on the Search for Lepton Number Violating Neutrinoless Double Beta Decay with the LEGEND-200 Experiment

H. Acharya, N. Ackermann, M. Agostini +256

The LEGEND collaboration is searching for neutrinoless double beta ( $0 I^½ I^^{2} I^^{2}$ ) decay by operating high-purity germanium detectors enriched in $^{76}$ Ge in a low-background liquid a…

First Simultaneous Determination of Inclusive and Exclusive $∣ V_{u b} ∣$

Belle Collaboration, L. Cao, F. Bernlochner +211

The first simultaneous determination of the absolute value of the Cabibbo-Kobayashi-Maskawa matrix element $V_{u b}$ using inclusive and exclusive decays is performed with the full…

Measurement of Differential Distributions of $B \to D^{*} ℓ I^ˉ ½_{ℓ}$ and Implications on $∣ V_{c b} ∣$

Belle Collaboration, M. T. Prim, F. Bernlochner +212

We present a measurement of the differential shapes of exclusive $B \to D^{*} ℓ I^ˉ ½_{ℓ}$ ( $B = B^{-}, B ˉ^{0}$ and $ℓ = e, I^¼$ ) decays with hadronic tag-side reconstruction…

Search for the double-charmonium state with $I^\cdot_{c} J / I ¨ $ at Belle

Belle Collaboration, J. H. Yin, Y. B. Li +180

We measure the cross section of $e^{+} e^{-} \to I^\cdot_{c} J / I ¨ $ at the $I^¥ (n S) (n = 1$ -- $5)$ on-resonance and 10.52 GeV off-resonance energy points using the full data sample collecte…

Search for the lepton flavour violating decays $B^{+} \to K^{+} I ¨ ^{\pm} ℓ^{\mp}$ ( $ℓ = e, I^¼$ ) at Belle

Belle Collaboration, S. Watanuki, G. de Marino +176

We present a search for the lepton-flavour-violating decays $B^{+} \to K^{+} I ¨ ^{\pm} ℓ^{\mp}$ , with $ℓ = (e, I^¼)$ , using the full data sample of $772 \times 1 0^{6}$ $B B$ pa…

cond-mat.mtrl-sci2020

Surfactant-Mediated Epitaxial Growth of Single-Layer Graphene in an Unconventional Orientation on SiC

F. C. Bocquet, Y. -R. Lin, M. Franke +6

We report the use of a surfactant molecule during the epitaxy of graphene on SiC(0001) that leads to the growth in an unconventional orientation, namely $R 0^{\circ}$ rotation with re…

Search for lepton-flavor-violating $I ¨ $ decays into a lepton and a vector meson using the full Belle data sample

Belle Collaboration, N. Tsuzuki, K. Inami +180

Charged-lepton-flavor-violation is predicted in several new physics scenarios. We update the analysis of $I ¨ $ lepton decays into a light charged lepton ( $ℓ$ = $e^{\pm}$ or $Î¼^{…

Search for $B_{s}^{0} \to ℓ^{\mp} I ¨ ^{\pm}$ with the Semi-leptonic Tagging Method at Belle

Belle Collaboration, L. Nayak, S. Nishida +189

We present a search for the lepton-flavor-violating decays $B_{s}^{0} \to ℓ^{\mp} I ¨ ^{\pm}$ , where $ℓ = e, I^¼$ , using the full data sample of $121 fb^{- 1}$ coll…

Search for charged-lepton flavor violation in $I^¥ (2 S) \to ℓ^{\mp} I ¨ ^{\pm}$ ( $ℓ = e, I^¼$ ) decays at Belle

R. Dhamija, S. Nishida, A. Giri +178

We report a search for the charged-lepton flavor violation in $I^¥ (2 S) \to ℓ^{\mp} I ¨ ^{\pm}$ ( $ℓ = e, I^¼$ ) decays using a $25~\fbi$ $I^¥ (2 S)$ sample collected by the Belle detector at…

First measurement of the Q^2 distribution of X(3915) single-tag two-photon production

Belle Collaboration, Y. Teramoto, S. Uehara +203

We report the first measurement of the $Q^{2}$ distribution of $X (3915)$ produced by single-tag two-photon interactions. The decay mode used is $X (3915) \to J / I ¨ I ¨ $ . The cove…

hep-ex2025

Measurement of $C P$ asymmetries in $B^{0} \to K_{S}^{0} I ¨ ^{0} I^^{3}$ decays at Belle II

Belle II Collaboration, I. Adachi, L. Aggarwal +436

We report measurements of time-dependent $C P$ asymmetries in $B^{0} \to K_{S}^{0} I ¨ ^{0} I^^{3}$ decays based on a data sample of $(388 \pm 6) \times 1 0^{6}$ $B B ˉ$ events collected at the $Î¥(4…

Evidence for $B^{0} \to p I^ˉ £^{0} I ¨ ^{-}$ at Belle

Belle Collaboration, C. -Y. Chang, M. -Z. Wang +192

We search for the $B^{0} \to p I^ˉ £^{0} I ¨ ^{-}$ decay with $I^ˉ £^{0} \to I^ˉ I^^{3}$ , where the $I^^{3}$ is not measured, using a data sample corresponding to an integrated luminosity of 711 $\…

Study of $B^{+} \to p n I ¨ ^{0}$

Belle Collaboration, K. -N. Chu, Y. -R. Lin +203

We search for the tree-diagram dominated process $B^{+} \to p n I ¨ ^{0}$ , using a data sample of $772 \times 1 0^{6} B B$ pairs collected at the $I^¥ (4 S)$ resona…

Search for $C P$ violation in $D_{(s)}^{+} \to K^{+} K_{S}^{0} h^{+} h^{-}$ $(h = K, I ¨ )$ decays and observation of the Cabibbo-suppressed decay $D_{s}^{+} \to K^{+} K^{-} K_{S}^{0} I ¨ ^{+}$

Belle Collaboration, H. K. Moon, E. Won +205

We search for $C P$ violation by measuring a $T$ -odd asymmetry in the Cabibbo-suppressed $D^{+} \to K^{+} K_{S}^{0} I ¨ ^{+} I ¨ ^{-}$ decay, and in the Cabibbo-favored $D^{+}_{s}\…

Search for a dark leptophilic scalar produced in association with $I ¨ ^{+} I ¨ ^{-}$ pair in $e^{+} e^{-}$ annihilation at center-of-mass energies near 10.58 GeV

Belle Collaboration, D. Biswas, Sw. Banerjee +177

A dark leptophilic scalar $(I ¨ _{L})$ is a hypothetical particle that couples only to leptons rather than quarks. We report on a search for $I ¨ _{L}$ in the $e^+e^- \to Ï^+ Ï^- Ï_L, ~…

Measurement of the mass and width of the $I^_{c} (2625)^{+}$ and the branching ratios of $I^_{c} (2625)^{+} \to I^£_{c}^{0} I ¨ ^{+}$ and $I^_{c} (2625)^{+} \to I^£_{c}^{++} I ¨ ^{-}$

Belle Collaboration, D. Wang, J. Yelton +181

Using the entire data sample of $980 fb^{- 1}$ collected with the Belle detector operating at the KEKB asymmetric-energy collider, we report the measurement of the mass, w…

physics.ins-det2026

Energy Calibration and Performance of HPGe Detectors in the LEGEND-200 Experiment

The LEGEND Collaboration, H. Acharya, M. Agostini +259

This paper describes the energy scale procedures and germanium detectors performance in the LEGEND-200 experiment, a critical component for the first unblinding in the search for n…

First Observation of $I^ I ¨ ^{+}$ and $I^ I ¨ ^{-}$ Signals near the $K ˉ N (I = 1)$ Mass Threshold in $I^_{c}^{+} \to I^ I ¨ ^{+} I ¨ ^{+} I ¨ ^{-}$ Decay

Belle Collaboration, Y. Ma, J. Yelton +195

Using the data sample of 980 fb $^{- 1}$ collected with the Belle detector operating at the KEKB asymmetric-energy $e^{+} e^{-}$ collider, we present the results of an investigation of th…

First measurement of the Michel parameter $I^¾^{'}$ in the $I ¨ ^{-} \to I^¼^{-} I^ˉ ½_{I^} ¼ I^½_{I ¨} $ decay at Belle

Belle Collaboration, D. Bodrov, P. Pakhlov +191

We report the first measurement of the Michel parameter $I^¾^{'}$ in the $I ¨ ^{-} \to I^¼^{-} I^ˉ ½_{I^} ¼ I^½_{I ¨} $ decay with a new method proposed just recently. The measurement is based on t…

Search for $C P$ violation using $T$ -odd correlations in $D_{(s)}^{+} \to K^{+} K^{-} I ¨ ^{+} I ¨ ^{0}$ , $D_{(s)}^{+} \to K^{+} I ¨ ^{-} I ¨ ^{+} I ¨ ^{0}$ , and $D^{+} \to K^{-} I ¨ ^{+} I ¨ ^{+} I ¨ ^{0}$ decays

Belle Collaboration, L. K. Li, A. J. Schwartz +174

We search for $C P$ violation using $T$ -odd correlations in five $D_{(s)}^{+}$ and $D_{(s)}^{-}$ four-body decays. Our analysis is based on 980 $f b^{- 1}$ of data collected by…

Study of the lineshape of $X (3872)$ using $B$ decays to $D^{0} D^{* 0} K$

Belle Collaboration, H. Hirata, T. Iijima +210

We present a study of the $X (3872)$ lineshape in the decay $B \to X (3872) K \to D^{0} D^{* 0} K$ using a data sample of $772 \times 1 0^{6}$ $B B$ pairs collected at th…

Study of the muon decay-in-flight in the $I ¨ ^{-} \to I^¼^{-} I^ˉ ½_{I^} ¼ I^½_{I ¨} $ decay to measure the Michel parameter $I^¾^{'}$

Belle Collaboration, D. Bodrov, P. Pakhlov +192

We present the first measurement of the Michel parameter $I^¾^{'}$ in the $I ¨ ^{-} \to I^¼^{-} I^ˉ ½_{I^} ¼ I^½_{I ¨} $ decay using the full data sample of $988 fb^{- 1}$ collected by the B…