N. Kobayashi

activity

20092021

most citedEffects of transversity in deep-inelastic scattering by polarized protons

197 citations · 1k across the 17 of their papers we have counts for

collaborators

18 papers

hep-ex2021★ 1 cited

Study of $χ_{b J} (n P) \to ω Υ (1 S)$ at Belle

Belle Collaboration, A. Abdesselam, I. Adachi +470

We report results from a study of hadronic transitions of the $χ_{b J} (n P)$ states of bottomonium at Belle. The $P$ -wave states are reconstructed in transitions to the $Υ (1 S)$ with…

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★ 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★ 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-ex2018★ 1 cited

Measurements of branching fraction and $C P$ asymmetry of the $B ˉ^{0} (B^{0}) \to K_{S}^{0} K^{\mp} π^{\pm}$ decay at Belle

A. Abdesselam, I. Adachi, K. Adamczyk +446

We report the measurement of the branching fraction and $C P$ asymmetry for the $B ˉ^{0} (B^{0}) \to K_{S}^{0} K^{\mp} π^{\pm}$ decay. The analysis is performed on a data sample of…

hep-ex2016★ 26 cited

Measurement of the $τ$ lepton polarization in the decay $B ˉ \to D^{*} τ^{-} ν ˉ_{τ}$

A. Abdesselam, I. Adachi, K. Adamczyk +447

We report the first measurement of the $τ$ lepton polarization in the decay $B ˉ \to D^{*} τ^{-} ν ˉ_{τ}$ as well as a new measurement of the ratio of the branching frac…

hep-ex2015★ 43 cited

First Observation of Doubly Cabibbo-Suppressed Decay of a Charmed Baryon: $Λ_{c}^{+} \to p K^{+} π^{-}$

Belle Collaboration, S. B. Yang, K. Tanida +190

We report the first observation of the decay $Λ_{c}^{+} \to p K^{+} π^{-}$ using a 980 $f b^{- 1}$ data sample collected by the Belle detector at the KEKB asymmetric…

hep-ex2014★ 15 cited

Transverse polarization of $Λ$ hyperons from quasireal photoproduction on nuclei

The HERMES Collaboration, A. Airapetian, N. Akopov +134

The transverse polarization of $Λ$ hyperons was measured in inclusive quasireal photoproduction for various target nuclei ranging from hydrogen to xenon. The data were obtained by…

hep-ex2012★ 5 cited

Measurement of the CP-violation Parameter sin2 $ϕ_{1}$ with a New Tagging Method at the $Υ (5 S)$ Resonance

Belle Collaboration, Y. Sato, H. Yamamoto +160

We report a measurement of the CP-violation parameter sin2 $ϕ_{1}$ at the $Υ (5 S)$ resonance using a new tagging method, called " $B$ - $π$ tagging." In $Υ (5 S)$ decays containing a neutra…

hep-ex2011★ 45 cited

Multidimensional Study of Hadronization in Nuclei

HERMES Collaboration, A. Airapetian, N. Akopov +137

Hadron multiplicities in semi-inclusive deep-inelastic scattering were measured on neon, krypton and xenon targets relative to deuterium at an electron(positron)-beam energy of 27.…

hep-ex2011★ 192 cited

Bounds on the width, mass difference and other properties of X(3872) --> pi+pi-J/psi decays

S. -K. Choi, S. L. Olsen, K. Trabelsi

We present results from a study of X(3872) --> pi+pi- J/psi decays produced via exclusive B--> K X(3872) decays. We determine the mass to be M_X(3872)= (3871.84\pm 0.27 (stat)\pm 0…

hep-ex2010★ 22 cited

Ratios of Helicity Amplitudes for Exclusive rho-0 Electroproduction

The HERMES Collaboration, A. Airapetian, N. Akopov +135

Exclusive rho^0-meson electroproduction is studied in the HERMES experiment, using a 27.6 GeV longitudinally polarized electron/positron beam and unpolarized hydrogen and deuterium…

hep-ex2010★ 30 cited

Measurement of azimuthal asymmetries associated with deeply virtual Compton scattering on a longitudinally polarized deuterium target

The HERMES Collaboration, A. Airapetian, N. Akopov +144

Azimuthal asymmetries in exclusive electroproduction of a real photon from a longitudinally polarized deuterium target are measured with respect to target polarization alone and wi…

hep-ex2010★ 197 cited

Effects of transversity in deep-inelastic scattering by polarized protons

HERMES collaboration, A. Airapetian, N. Akopov +142

Single-spin asymmetries for pions and charged kaons are measured in semi-inclusive deep-inelastic scattering of positrons and electrons off a transversely nuclear-polarized hydroge…

hep-ex2010★ 68 cited

Exclusive Leptoproduction of Real Photons on a Longitudinally Polarised Hydrogen Target

The HERMES Collaboration, A. Airapetian, N. Akopov +147

Polarisation asymmetries are measured for the hard exclusive leptoproduction of real photons from a longitudinally polarised hydrogen target. These asymmetries arise from the deepl…

hep-ex2009★ 44 cited

Measurement of azimuthal asymmetries associated with deeply virtual Compton scattering on an unpolarized deuterium target

The HERMES Collaboration, A. Airapetian

Azimuthal asymmetries in exclusive electroproduction of a real photon from an unpolarized deuterium target are measured with respect to beam helicity and charge. They appear in the…

hep-ex2009★ 54 cited

Single-spin azimuthal asymmetry in exclusive electroproduction of pi+ mesons on transversely polarized protons

HERMES Collaboration

Exclusive electroproduction of pi+ mesons was studied by scattering 27.6 GeV positrons or electrons off a transversely polarized hydrogen target. The single-spin azimuthal asymmetr…

Study of χbJ​(nP)→ωΥ(1S) at Belle

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

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

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​

Measurements of branching fraction and CP asymmetry of the Bˉ0(B0)→KS0​K∓π± decay at Belle

Measurement of the τ lepton polarization in the decay Bˉ→D∗τ−νˉτ​

First Observation of Doubly Cabibbo-Suppressed Decay of a Charmed Baryon: Λc+​→pK+π−

Transverse polarization of Λ hyperons from quasireal photoproduction on nuclei

Measurement of the CP-violation Parameter sin2ϕ1​ with a New Tagging Method at the Υ(5S) Resonance