S. Takekawa

activity

20072017

most citedThe Spin-dependent Structure Function of the Proton g_1^p and a Test of the Bjorken Sum Rule

174 citations · 2.2k across the 38 of their papers we have counts for

collaborators

38 papers

hep-ex2017★ 34 cited

First measurement of the Sivers asymmetry for gluons from SIDIS data

C. Adolph, M. Aghasyan, R. Akhunzyanov +223

The Sivers function describes the correlation between the transverse spin of a nucleon and the transverse motion of its partons. It was extracted from measurements of the azimuthal…

hep-ex2016★ 53 cited

Final COMPASS results on the deuteron spin-dependent structure function $g_{1}^{d}$ and the Bjorken sum rule

C. Adolph, M. Aghasyan, R. Akhunzyanov +223

Final results are presented from the inclusive measurement of deep-inelastic polarised-muon scattering on longitudinally polarised deuterons using a $^{6}$ LiD target. The data were t…

hep-ex2016★ 55 cited

Sivers asymmetry extracted in SIDIS at the hard scale of the Drell-Yan process at COMPASS

C. Adolph, M. Aghasyan, R. Akhunzyanov +223

Proton transverse-spin azimuthal asymmetries are extracted from the COMPASS 2010 semi-inclusive hadron measurements in deep inelastic muon-nucleon scattering in those four regions…

hep-ex2016★ 20 cited

Azimuthal asymmetries of charged hadrons produced in high-energy muon scattering off longitudinally polarised deuterons

C. Adolph, M. Aghasyan, R. Akhunzyanov +221

Single hadron azimuthal asymmetries of positive and negative hadrons produced in muon semi-inclusive deep inelastic scattering off longitudinally polarised deuterons are determined…

hep-ex2016★ 47 cited

Multiplicities of charged kaons from deep-inelastic muon scattering off an isoscalar target

C. Adolph, J. Agarwala, M. Aghasyan +223

Precise measurements of charged-kaon multiplicities in deep inelastic scattering were performed. The results are presented in three-dimensional bins of the Bjorken scaling variable…

hep-ex2016★ 12 cited

Exclusive $ω$ meson muoproduction on transversely polarised protons

C. Adolph, J. Agarwala, M. Aghasyan +225

Exclusive production of $ω$ mesons was studied at the COMPASS experiment by scattering $160 GeV / c$ muons off transversely polarised protons. Five single-spin and…

hep-ex2016★ 52 cited

Multiplicities of charged pions and unidentified charged hadrons from deep-inelastic scattering of muons off an isoscalar target

C. Adolph, J. Agarwala, M. Aghasyan +224

Multiplicities of charged pions and unidentified hadrons produced in deep-inelastic scattering were measured in bins of the Bjorken scaling variable $x$ , the relative virtual-photo…

hep-ex2015★ 3 cited

Longitudinal double spin asymmetries in single hadron quasi-real photoproduction at high $p_{T}$

COMPASS Collaboration, C. Adolph, R. Akhunzyanov +207

We measured the longitudinal double spin asymmetries $A_{LL}$ for single hadron muo-production off protons and deuterons at photon virtuality $Q^{2}$ < 1(GeV/ $c$ ) $^{2}$ for transve…

hep-ex2015★ 57 cited

Resonance Production and $π π$ S-wave in $π^{-} + p \to π^{-} π^{-} π^{+} + p_{r eco i l}$ at 190 GeV/c

C. Adolph, R. Akhunzyanov, M. G. Alexeev +206

The COMPASS collaboration has collected the currently largest data set on diffractively produced $π^{-} π^{-} π^{+}$ final states using a negative pion beam of 190 GeV/c momentum impinging…

hep-ex2015★ 14 cited

Interplay among transversity induced asymmetries in hadron leptoproduction

Compass Collaboration, C. Adolph, R. Akhunzyanov +206

In the fragmentation of a transversely polarized quark several left-right asymmetries are possible for the hadrons in the jet. When only one unpolarized hadron is selected, it exhi…

hep-ex2015★ 127 cited

The Spin Structure Function $g_{1}^{p}$ of the Proton and a Test of the Bjorken Sum Rule

C. Adolph, R. Akhunzyanov, M. G. Alexeev +203

New results for the double spin asymmetry $A_{1}^{p}$ and the proton longitudinal spin structure function $g_{1}^{p}$ are presented. They were obtained by the COMPASS collabora…

hep-ex2015★ 75 cited

Observation of a new narrow axial-vector meson $a_{1} (1420)$

C. Adolph, R. Akhunzyanov, M. G. Alexeev +201

The COMPASS collaboration at CERN has measured diffractive dissociation of 190 GeV/ $c$ pions into the $π^{-} π^{-} π^{+}$ final state using a stationary hydrogen target. A partial-wave ana…

physics.ins-det2014★ 78 cited

The COMPASS Setup for Physics with Hadron Beams

Ph. Abbon, C. Adolph, R. Akhunzyanov +228

The main characteristics of the COMPASS experimental setup for physics with hadron beams are described. This setup was designed to perform exclusive measurements of processes with…

hep-ex2014★ 114 cited

Collins and Sivers asymmetries in muonproduction of pions and kaons off transversely polarised proton

C. Adolph, R. Akhunzyanov, M. G. Alexeev +205

Measurements of the Collins and Sivers asymmetries for charged pions and charged and neutral kaons produced in semi-inclusive deep-inelastic scattering of high energy muons off tra…

hep-ex2014★ 77 cited

Odd and Even Partial Waves of $η π^{-}$ and $η^{'} π^{-}$ in $π^{-} p \to η^{(')} π^{-} p$ at $191 GeV / c$

C. Adolph, R. Akhunzyanov, M. G. Alexeev +205

Exclusive production of $η π^{-}$ and $η^{'} π^{-}$ has been studied with a $191 GeV / c$ $π^{-}$ beam impinging on a hydrogen target at COMPASS (CERN). Partial-wave analyses reveal d…

hep-ex2014★ 35 cited

Search for exclusive photoproduction of Z $_{c}^{\pm}$ (3900) at COMPASS

C. Adolph, R. Akhunzyanov, M. G. Alexeev +205

A search for the exclusive production of the $Z_{c}^{\pm} (3900)$ hadron by virtual photons has been performed in the channel $Z_{c}^{\pm} (3900) \to J / ψ π^{\pm}$ . The data cover t…

hep-ex2014★ 7 cited

Spin alignment and violation of the OZI rule in exclusive $ω$ and $ϕ$ production in pp collisions

C. Adolph, R. Akhunzyanov, M. G. Alexeev +206

Exclusive production of the isoscalar vector mesons $ω$ and $ϕ$ is measured with a 190 GeV $/ c$ proton beam impinging on a liquid hydrogen target. Cross section ratios are determine…

hep-ex2014★ 52 cited

Measurement of the charged-pion polarisability

C. Adolph, R. Akhunzyanov, M. G. Alexeev +210

The COMPASS collaboration at CERN has investigated pion Compton scattering, $π^{-} γ \to π^{-} γ$ , at centre-of-mass energy below 3.5 pion masses. The process is embedded in the r…

hep-ex2014★ 15 cited

Measurement of radiative widths of $a_{2} (1320)$ and $π_{2} (1670)$

C. Adolph, R. Akhunzyanov, M. G. Alekseev +206

The COMPASS Collaboration at CERN has investigated the reaction $π^{-} γ \to π^{-} π^{-} π^{+}$ embedded in the Primakoff reaction of $190 GeV$ pions scattering in the Coulom…

hep-ex2014★ 78 cited

A high-statistics measurement of transverse spin effects in dihadron production from muon-proton semi-inclusive deep-inelastic scattering

C. Adolph, R. Akhunzyanov, M. G. Alekseev +217

A measurement of the azimuthal asymmetry in dihadron production in deep-inelastic scattering of muons on transversely polarised proton (NH $_{3}$ ) targets are presented. They provid…

hep-ex2014★ 74 cited

Measurement of azimuthal hadron asymmetries in semi-inclusive deep inelastic scattering off unpolarised nucleons

C. Adolph, R. Akhunzyanov, M. G. Alekseev +217

Spin-averaged asymmetries in the azimuthal distributions of positive and negative hadrons produced in deep inelastic scattering were measured using the CERN SPS muon beam at $160$ …

hep-ex2013★ 29 cited

Transverse target spin asymmetries in exclusive $ρ^{0}$ muoproduction

C. Adolph, M. G. Alekseev, V. Yu. Alexakhin +209

Exclusive production of $ρ^{0}$ mesons was studied at the COMPASS experiment by scattering 160 GeV/ $c$ muons off transversely polarised protons. Five single-spin and three double-spi…

hep-ex2013★ 68 cited

Hadron Transverse Momentum Distributions in Muon Deep Inelastic Scattering at 160 GeV/ $c$

C. Adolph, M. G. Alekseev, V. Yu. Alexakhin +207

Multiplicities of charged hadrons produced in deep inelastic muon scattering off a $^{6}$ LiD target have been measured as a function of the DIS variables $x_{B j}$ , $Q^{2}$ , $W^{2}$ and t…

hep-ex2013★ 10 cited

Study of Σ(1385) and Ξ(1321) hyperon and antihyperon production in deep inelastic muon scattering

C. Adolph, M. Alekseev, V. Yu. Alexakhin +203

Large samples of Λ, Σ(1385) and Ξ(1321) hyperons produced in deep-inelastic muon scattering off a ^6LiD target were collected with the COMPASS experimental setup at CERN. The relat…

First measurement of the Sivers asymmetry for gluons from SIDIS data

Final COMPASS results on the deuteron spin-dependent structure function g1d​ and the Bjorken sum rule

Sivers asymmetry extracted in SIDIS at the hard scale of the Drell-Yan process at COMPASS

Azimuthal asymmetries of charged hadrons produced in high-energy muon scattering off longitudinally polarised deuterons

Multiplicities of charged kaons from deep-inelastic muon scattering off an isoscalar target

Exclusive ω meson muoproduction on transversely polarised protons

Multiplicities of charged pions and unidentified charged hadrons from deep-inelastic scattering of muons off an isoscalar target

Longitudinal double spin asymmetries in single hadron quasi-real photoproduction at high pT​

Resonance Production and ππ S-wave in π−+p→π−π−π++precoil​ at 190 GeV/c

Interplay among transversity induced asymmetries in hadron leptoproduction

The Spin Structure Function g1p​ of the Proton and a Test of the Bjorken Sum Rule

Observation of a new narrow axial-vector meson a1​(1420)

The COMPASS Setup for Physics with Hadron Beams

Collins and Sivers asymmetries in muonproduction of pions and kaons off transversely polarised proton

Odd and Even Partial Waves of ηπ− and η′π− in π−p→η(′)π−p at 191GeV/c

Search for exclusive photoproduction of Zc±​(3900) at COMPASS

Spin alignment and violation of the OZI rule in exclusive ω and ϕ production in pp collisions

Measurement of the charged-pion polarisability

Measurement of radiative widths of a2​(1320) and π2​(1670)

A high-statistics measurement of transverse spin effects in dihadron production from muon-proton semi-inclusive deep-inelastic scattering

Measurement of azimuthal hadron asymmetries in semi-inclusive deep inelastic scattering off unpolarised nucleons

Transverse target spin asymmetries in exclusive ρ0 muoproduction

Hadron Transverse Momentum Distributions in Muon Deep Inelastic Scattering at 160 GeV/c

Study of Σ(1385) and Ξ(1321) hyperon and antihyperon production in deep inelastic muon scattering

Final COMPASS results on the deuteron spin-dependent structure function $g_{1}^{d}$ and the Bjorken sum rule

Exclusive $ω$ meson muoproduction on transversely polarised protons

Longitudinal double spin asymmetries in single hadron quasi-real photoproduction at high $p_{T}$

Resonance Production and $π π$ S-wave in $π^{-} + p \to π^{-} π^{-} π^{+} + p_{r eco i l}$ at 190 GeV/c

The Spin Structure Function $g_{1}^{p}$ of the Proton and a Test of the Bjorken Sum Rule

Observation of a new narrow axial-vector meson $a_{1} (1420)$

Odd and Even Partial Waves of $η π^{-}$ and $η^{'} π^{-}$ in $π^{-} p \to η^{(')} π^{-} p$ at $191 GeV / c$

Search for exclusive photoproduction of Z $_{c}^{\pm}$ (3900) at COMPASS

Spin alignment and violation of the OZI rule in exclusive $ω$ and $ϕ$ production in pp collisions

Measurement of radiative widths of $a_{2} (1320)$ and $π_{2} (1670)$

Transverse target spin asymmetries in exclusive $ρ^{0}$ muoproduction

Hadron Transverse Momentum Distributions in Muon Deep Inelastic Scattering at 160 GeV/ $c$