K. Nath

activity

20152021

most citedThe Belle II Physics Book

570 citations · 4.3k across the 96 of their papers we have counts for

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98 papers · 1 filter

hep-ex2021★ 1 cited

Search for the decay $B_{s}^{0} \to η η$

Belle Collaboration, B. Bhuyan, K. J. Nath +184

We report results from a search for the decay $B_{s}^{0} \to η η$ using 121.4 fb $^{- 1}$ of data collected at the $Υ (5 S)$ resonance with the Belle detector at the KEKB asymmetric-e…

hep-ex2021★ 2 cited

Measurement of $B$ ( $B_{s} \to D_{s} X$ ) with $B_{s}$ Semileptonic Tagging

B. Wang, K. Kinoshita, H. Aihara +153

We report the first direct measurement of the inclusive branching fraction $B (B_{s} \to D_{s} X)$ via $B_{s}$ tagging in $e^{+} e^{-} \to Υ$ (5S) events. Tagging is accomplish…

hep-ex2021★ 3 cited

Search for the Decay $B_{s}^{0} \to η^{'} η$

Belle Collaboration, N. K. Nisar, V. Savinov +197

We report the results of the first search for the decay $B_{s}^{0} \to η^{'} η$ using $121.4 fb^{- 1}$ of data collected at the $Υ (5 S)$ resonance with the Belle dete…

hep-ex2020★ 6 cited

Measurement of two-particle correlations in hadronic $e^{+} e^{-}$ collisions at Belle

Belle Collaboration, A. Abdesselam, I. Adachi +459

The enhancement of charged-particle pairs with large pseudorapidity difference and small azimuthal angle difference, often referred to as the ``ridge signal'', is a phenomenon wide…

hep-ex2019★ 1 cited

Measurements of the Branching Fractions $B (B^{-} \to Λ ˉ_{c}^{-} Ξ_{c}^{^{'} 0})$ , $B (B^{-} \to Λ ˉ_{c}^{-} Ξ_{c} (2645)^{0})$ and $B (B^{-} \to Λ ˉ_{c}^{-} Ξ_{c} (2790)^{0})$

Belle Collaboration, Y. Li, Y. B. Li +173

Using the data sample of 711 fb $^{- 1}$ of $Υ (4 S)$ on-resonance data taken by the Belle detector at the KEKB asymmetric-energy electron-positron collider, we present the first measu…

hep-ex2019★ 2 cited

Study of $B \to p p ˉ π π$

K. Chu, M. -Z. Wang, I. Adachi +174

Using a data sample of $772 \times 1 0^{6}$ BB pairs collected on the $Υ (4 S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^{+} e^{-}$ collider, we report the observat…

hep-ex2019★ 44 cited

Search for $B^{+} \to μ^{+} ν_{μ}$ and $B^{+} \to μ^{+} N$ with inclusive tagging

M. T. Prim, F. U. Bernlochner, P. Goldenzweig +191

We report the result for a search for the leptonic decay of $B^{+} \to μ^{+} ν_{μ}$ using the full Belle data set of 711 fb $^{- 1}$ of integrated luminosity at the $Υ (4 S)$ resonance.…

hep-ex2019★ 34 cited

Observation of a vector charmoniumlike state in $e^{+} e^{-} \to D_{s}^{+} D_{s 1} (2536)^{-} + c . c .$

Belle Collaboration, S. Jia, C. P. Shen +171

Using a data sample of 921.9 fb $^{- 1}$ collected with the Belle detector, we study the process of $e^{+} e^{-} \to D_{s}^{+} D_{s 1} (2536)^{-} + c . c .$ via initial-state radiation. We report the fi…

hep-ex2019★ 236 cited

Measurement of $R (D)$ and $R (D^{*})$ with a semileptonic tagging method

The Belle Collaboration, G. Caria, P. Urquijo +188

The experimental results on the ratios of branching fractions $R (D) = B (B ˉ \to D τ^{-} ν ˉ_{τ}) / B (B ˉ \to D ℓ^{-} ν ˉ_{ℓ})$ and $\mathcal{R}(D^…

hep-ex2019★ 7 cited

Observation of $τ^{-} \to π^{-} ν_{τ} e^{+} e^{-}$ and search for $τ^{-} \to π^{-} ν_{τ} μ^{+} μ^{-}$

Belle Collaboration, Y. Jin, H. Aihara +195

We present the first measurements of branching fractions of rare tau-lepton decays, $τ^{-} \to π^{-} ν_{τ} ℓ^{+} ℓ^{-}$ ( $ℓ = e$ or $μ$ ), using a data sample corresponding t…

hep-ex2019★ 19 cited

Azimuthal asymmetries of back-to-back $π^{\pm} - (π^{0}, η, π^{\pm})$ pairs in $e^{+} e^{-}$ annihilation

Belle Collaboration, H. Li, A. Vossen +126

This work reports the first observation of azimuthal asymmetries around the thrust axis in $e^{+} e^{-}$ annihilation of pairs of back-to-back charged pions in one hemisphere, and $π^{0}$ …

hep-ex2019

Experimental determination of the isospin of $Λ_{c} (2765)^{+} / Σ_{c} (2765)^{+}$

The Belle Collaboration, A. Abdesselam, I. Adachi +454

We report an experimental determination of the isospin of $Λ_{c} (2765)^{+} / Σ_{c} (2765)^{+}$ using 980 fb $^{- 1}$ data in the $e^{+} e^{-}$ annihilation around $s = 10.6$ GeV collected by…

hep-ex2019★ 11 cited

First measurement of the CKM angle $ϕ_{3}$ with $B^{\pm} \to D (K_{S}^{0} π^{+} π^{-} π^{0}) K^{\pm}$ decays

Belle Collaboration, P. K. Resmi, J. Libby +165

We present the first model-independent measurement of the CKM unitarity triangle angle $ϕ_{3}$ using $B^{\pm} \to D (K_{S}^{0} π^{+} π^{-} π^{0}) K^{\pm}$ decays, where $D$ indicates either a…

hep-ex2019★ 134 cited

Test of lepton flavor universality and search for lepton flavor violation in $B \to K ℓℓ$ decays

S. Choudhury, S. Sandilya, K. Trabelsi +220

We present measurements of the branching fractions for the decays $B \to K μ^{+} μ^{-}$ and $B \to K e^{+} e^{-}$ , and their ratio ( $R_{K}$ ), using a data sample of 711 $f b^{- 1}$ that…

hep-ex2019★ 16 cited

Search for $X (3872)$ and $X (3915)$ decay into $χ_{c 1} π^{0}$ in $B$ decays at Belle

V. Bhardwaj, S. Jia, I. Adachi +190

The Belle experiment searched for the exotic states X(3872) and X(3915) decaying to χc1 π0 in B⁺ → χc1 π0 K⁺ decays and set upper limits on the product branching fractions.

hep-ex2019★ 4 cited

Search for $B^{0} \to X (3872) γ$

Belle Collaboration, P. -C. Chou, P. Chang +191

We report the results of a search for the decay $B^{0} \to X (3872) (\to J / ψ π^{+} π^{-}) γ$ . The analysis is performed on a data sample corresponding to an integrated luminosity of $711\,{…

hep-ex2019★ 31 cited

Observation of a new structure near 10.75 GeV in the energy dependence of the $e^{+} e^{-} \to Υ (n S) π^{+} π^{-}$ ( $n = 1, 2, 3$ ) cross sections

R. Mizuk, A. Bondar, I. Adachi +177

We report a new measurement of the $e^{+} e^{-} \to Υ (n S) π^{+} π^{-}$ ( $n = 1, 2, 3$ ) cross sections at energies from 10.52 to 11.02 GeV using data collected with the Belle detector at the KEKB as…

hep-ex2019★ 68 cited

Measurement of $R (D)$ and $R (D^{*})$ with a semileptonic tagging method

The Belle Collaboration, A. Abdesselam, I. Adachi +461

We report a measurement of the ratios of branching fractions $R (D) = B (B ˉ \to D τ^{-} ν ˉ_{τ}) / B (B ˉ \to D ℓ^{-} ν ˉ_{ℓ})$ and $\mathcal{R}(D^{…

hep-ex2019★ 2 cited

Measurement of branching fraction and final-state asymmetry for the $B ˉ^{0} \to K_{S}^{0} K^{\mp} π^{\pm}$ decay

Belle Collaboration, Y. -T. Lai, I. Adachi +184

We report a measurement of the branching fraction and final-state asymmetry for the $B ˉ^{0} \to K_{S}^{0} K^{\mp} π^{\pm}$ decays. The analysis is based on a data sample of 711 $…

hep-ex2019★ 5 cited

Evidence for the decay $B^{0} \to p p ˉ π^{0}$

Belle Collaboration, B. Pal, I. Adachi +172

We report a search for the charmless baryonic decay $B^{0} \to p p ˉ π^{0}$ with a data sample corresponding to an integrated luminosity of 711~ $f b^{- 1}$ containing $(772\pm 10)\t…

hep-ex2019★ 33 cited

First measurements of absolute branching fractions of the $Ξ_{c}^{+}$ baryon at Belle

Belle Collaboration, Y. B. Li, C. P. Shen +192

We present the first measurements of the absolute branching fractions of $Ξ_{c}^{+}$ decays into $Ξ^{-} π^{+} π^{+}$ and $p K^{-} π^{+}$ final states. Our analysis is based on a data set of $(77…

hep-ex2019★ 170 cited

Test of lepton-flavor universality in $B \to K^{*} ℓ^{+} ℓ^{-}$ decays at Belle

Belle Collaboration, S. Wehle, I. Adachi +179

We present a measurement of $R_{K^{*}}$ , the branching fraction ratio $B (B \to K^{*} μ^{+} μ^{-})$ / $B (B \to K^{*} e^{+} e^{-})$ , for both charged and neutral $B$ meso…

hep-ex2019★ 35 cited

Measurement of the $D^{-}$ polarization in the decay $B^{0} \to D^{-} τ^{+} ν_{τ}$

Belle Collaboration, A. Abdesselam, I. Adachi +457

We report the first measurement of the $D^{*-}$ meson polarization in the decay $B^{0} \to D^{*-} τ^{+} ν_{τ}$ using the full data sample of 772 $\times 1 0^{6}$ $B B ˉ$ pairs recorded…

hep-ex2019★ 8 cited

Evidence for $B^{+} \to h_{c} K^{+}$ and observation of $η_{c} (2 S) \to p p ˉ π^{+} π^{-}$

Belle Collaboration, K. Chilikin, I. Adachi +173

A search for the decays $B^{+} \to h_{c} K^{+}$ and $B^{0} \to h_{c} K_{S}^{0}$ is performed. Evidence for the decay $B^{+} \to h_{c} K^{+}$ is found; its significance is $4.8σ…

Search for the decay Bs0​→ηη

Measurement of B(Bs​→Ds​X) with Bs​ Semileptonic Tagging

Search for the Decay Bs0​→η′η

Measurement of two-particle correlations in hadronic e+e− collisions at Belle

Measurements of the Branching Fractions B(B−→Λˉc−​Ξc′0​), B(B−→Λˉc−​Ξc​(2645)0) and B(B−→Λˉc−​Ξc​(2790)0)

Study of B→ppˉ​ππ

Search for B+→μ+νμ​ and B+→μ+N with inclusive tagging

Observation of a vector charmoniumlike state in e+e−→Ds+​Ds1​(2536)−+c.c.

Measurement of R(D) and R(D∗) with a semileptonic tagging method

Observation of τ−→π−ντ​e+e− and search for τ−→π−ντ​μ+μ−

Azimuthal asymmetries of back-to-back π±−(π0,η,π±) pairs in e+e− annihilation

Experimental determination of the isospin of Λc​(2765)+/Σc​(2765)+

First measurement of the CKM angle ϕ3​ with B±→D(KS0​π+π−π0)K± decays

Test of lepton flavor universality and search for lepton flavor violation in B→Kℓℓ decays

Search for X(3872) and X(3915) decay into χc1​π0 in B decays at Belle

Search for B0→X(3872)γ

Observation of a new structure near 10.75 GeV in the energy dependence of the e+e−→Υ(nS)π+π− (n=1,2,3) cross sections

Measurement of R(D) and R(D∗) with a semileptonic tagging method

Measurement of branching fraction and final-state asymmetry for the Bˉ0→KS0​K∓π± decay

Evidence for the decay B0→ppˉ​π0

First measurements of absolute branching fractions of the Ξc+​ baryon at Belle

Test of lepton-flavor universality in B→K∗ℓ+ℓ− decays at Belle

Measurement of the D∗− polarization in the decay B0→D∗−τ+ντ​

Evidence for B+→hc​K+ and observation of ηc​(2S)→ppˉ​π+π−

Search for the decay $B_{s}^{0} \to η η$

Measurement of $B$ ( $B_{s} \to D_{s} X$ ) with $B_{s}$ Semileptonic Tagging

Search for the Decay $B_{s}^{0} \to η^{'} η$

Measurement of two-particle correlations in hadronic $e^{+} e^{-}$ collisions at Belle

Measurements of the Branching Fractions $B (B^{-} \to Λ ˉ_{c}^{-} Ξ_{c}^{^{'} 0})$ , $B (B^{-} \to Λ ˉ_{c}^{-} Ξ_{c} (2645)^{0})$ and $B (B^{-} \to Λ ˉ_{c}^{-} Ξ_{c} (2790)^{0})$

Study of $B \to p p ˉ π π$

Search for $B^{+} \to μ^{+} ν_{μ}$ and $B^{+} \to μ^{+} N$ with inclusive tagging

Observation of a vector charmoniumlike state in $e^{+} e^{-} \to D_{s}^{+} D_{s 1} (2536)^{-} + c . c .$

Measurement of $R (D)$ and $R (D^{*})$ with a semileptonic tagging method

Observation of $τ^{-} \to π^{-} ν_{τ} e^{+} e^{-}$ and search for $τ^{-} \to π^{-} ν_{τ} μ^{+} μ^{-}$

Azimuthal asymmetries of back-to-back $π^{\pm} - (π^{0}, η, π^{\pm})$ pairs in $e^{+} e^{-}$ annihilation

Experimental determination of the isospin of $Λ_{c} (2765)^{+} / Σ_{c} (2765)^{+}$

First measurement of the CKM angle $ϕ_{3}$ with $B^{\pm} \to D (K_{S}^{0} π^{+} π^{-} π^{0}) K^{\pm}$ decays

Test of lepton flavor universality and search for lepton flavor violation in $B \to K ℓℓ$ decays

Search for $X (3872)$ and $X (3915)$ decay into $χ_{c 1} π^{0}$ in $B$ decays at Belle

Search for $B^{0} \to X (3872) γ$

Observation of a new structure near 10.75 GeV in the energy dependence of the $e^{+} e^{-} \to Υ (n S) π^{+} π^{-}$ ( $n = 1, 2, 3$ ) cross sections

Measurement of $R (D)$ and $R (D^{*})$ with a semileptonic tagging method

Measurement of branching fraction and final-state asymmetry for the $B ˉ^{0} \to K_{S}^{0} K^{\mp} π^{\pm}$ decay

Evidence for the decay $B^{0} \to p p ˉ π^{0}$

First measurements of absolute branching fractions of the $Ξ_{c}^{+}$ baryon at Belle

Test of lepton-flavor universality in $B \to K^{*} ℓ^{+} ℓ^{-}$ decays at Belle

Measurement of the $D^{-}$ polarization in the decay $B^{0} \to D^{-} τ^{+} ν_{τ}$

Evidence for $B^{+} \to h_{c} K^{+}$ and observation of $η_{c} (2 S) \to p p ˉ π^{+} π^{-}$