wovepaper — the arXiv observatory

papers

Publications (21)

hep-ex2025

The Linear Collider Facility (LCF) at CERN

H. Abramowicz, E. Adli, F. Alharthi +406

In this paper we outline a proposal for a Linear Collider Facility as the next flagship project for CERN. It offers the opportunity for a timely, cost-effective and staged construc…

hep-ex2020

Antiproton over proton and K $^{-}$ over K $^{+}$ multiplicity ratios at high $z$ in DIS

M. G. Alexeev, G. D. Alexeev, A. Amoroso +195

The $p ˉ$ over p multiplicity ratio is measured in deep-inelastic scattering for the first time using (anti-) protons carrying a large fraction of the virtual-photon energ…

hep-ex2018

Measurement of $P_{T}$ -weighted Sivers asymmetries in leptoproduction of hadrons

M. G. Alexeev, G. D. Alexeev, A. Amoroso +209

The transverse spin asymmetries measured in semi-inclusive leptoproduction of hadrons, when weighted with the hadron transverse momentum $P_{T}$ , allow for the extraction of importan…

hep-ex2018

Light isovector resonances in $I ¨ ^{-} p \to I ¨ ^{-} I ¨ ^{-} I ¨ ^{+} p$ at 190 GeV/ $c$

M. Aghasyan, M. G. Alexeev, G. D. Alexeev +221

We have performed the most comprehensive resonance-model fit of $I ¨ ^{-} I ¨ ^{-} I ¨ ^{+}$ states using the results of our previously published partial-wave analysis (PWA) of a large data set…

hep-ex2017

First measurement of transverse-spin-dependent azimuthal asymmetries in the Drell-Yan process

Aghasyan, R. Akhunzyanov, M. G. Alexeev +216

The first measurement of transverse-spin-dependent azimuthal asymmetries in the pion-induced Drell-Yan (DY) process is reported. We use the CERN SPS 190 GeV/ $c$ , $I ¨ ^{-}$ beam and…

hep-ex2022

The exotic meson $I ¨ _{1} (1600)$ with $J^{P C} = 1^{-+}$ and its decay into $I ¨ (770) I ¨ $

M. G. Alexeev, G. D. Alexeev, A. Amoroso +192

We study the spin-exotic $J^{P C} = 1^{-+}$ amplitude in single-diffractive dissociation of 190 GeV $/ c$ pions into $I ¨ ^{-} I ¨ ^{-} I ¨ ^{+}$ using a hydrogen target and confirm the $Ï_1(1600)…

hep-ex2019

Contribution of exclusive diffractive processes to the measured azimuthal asymmetries in SIDIS

J. Agarwala, M. G. Alexeev, G. D. Alexeev +203

Hadron leptoproduction in Semi-Inclusive measurements of Deep-Inelastic Scattering (SIDIS) on unpolarised nucleons allows one to get information on the intrinsic transverse momentu…

hep-ex2019

Letter of Intent: A New QCD facility at the M2 beam line of the CERN SPS (COMPASS++/AMBER)

B. Adams, C. A. Aidala, R. Akhunzyanov +263

A New QCD facility at the M2 beam line of the CERN SPS COMPASS++/AMBER

hep-ex2019

Transverse Extension of Partons in the Proton probed by Deeply Virtual Compton Scattering

R. Akhunzyanov, M. G. Alexeev, G. D. Alexeev +223

We report on the first measurement of exclusive single-photon muoproduction on the proton by COMPASS using 160 GeV/ $c$ polarized $I^¼^{+}$ and $I^¼^{-}$ beams of the CERN SPS impinging o…

hep-ex2018

K $^{-}$ over K $^{+}$ multiplicity ratio for kaons produced in DIS with a large fraction of the virtual-photon energy

R. Akhunzyanov, M. G. Alexeev, G. D. Alexeev +207

The K $^{-}$ over K $^{+}$ multiplicity ratio is measured in deep-inelastic scattering, for the first time for kaons carrying a large fraction $z$ of the virtual-photon energy. The d…

hep-ex2017

Transverse-momentum-dependent Multiplicities of Charged Hadrons in Muon-Deuteron Deep Inelastic Scattering

M. Aghasyan, R. Akhunzyanov, M. G. Alexeev +227

A semi-inclusive measurement of charged hadron multiplicities in deep inelastic muon scattering off an isoscalar target was performed using data collected by the COMPASS Collaborat…

physics.ins-det2025

Precision determination of the track-position resolution of beam telescopes

M. Antonello, L. Eikelmann, E. Garutti +4

Beam tests using tracking telescopes are a standard method for determining the spatial resolution of detectors. This requires the precise knowledge of the position resolution of be…

hep-ex2025

A Linear Collider Vision for the Future of Particle Physics

H. Abramowicz, E. Adli, F. Alharthi +446

In this paper we review the physics opportunities at linear $e^{+} e^{-}$ colliders with a special focus on high centre-of-mass energies and beam polarisation, take a fresh look at the…

hep-ex2021

Probing transversity by measuring $I^$ polarisation in SIDIS

M. G. Alexeev, G. D. Alexeev, A. Amoroso +196

Based on the observation of sizeable target-transverse-spin asymmetries in single-hadron and hadron-pair production in Semi-Inclusive measurements of Deep Inelastic Scattering (SID…

hep-ex2017

Longitudinal double-spin asymmetry $A_{1}^{p}$ and spin-dependent structure function $g_{1}^{p}$ of the proton at small values of $x$ and $Q^{2}$

M. Aghasyan, R. Akhunzyanov, M. G. Alexeev +225

We present a precise measurement of the proton longitudinal double-spin asymmetry $A_{1}^{p}$ and the proton spin-dependent structure function $g_{1}^{p}$ at photon virtualitie…

hep-ph2021

Triangle Singularity as the Origin of the $a_{1} (1420)$

G. D. Alexeev, M. G. Alexeev, A. Amoroso +194

The COMPASS experiment recently discovered a new isovector resonance-like signal with axial-vector quantum numbers, the $a_{1} (1420)$ , decaying to $f_{0} (980) I ¨ $ . With a mass too close…

hep-ex2022

Study of the band-gap energy of radiation-damaged silicon

R. Klanner, S. Martens, J. Schwandt +1

The transmission of silicon crystals irradiated by 24 GeV/c protons and reactor neutrons has been measured for photon energies, $E I^^{3}$ , between 0.95 and 1.3 eV. From the transmissio…

hep-ex2018

Search for muoproduction of $X (3872)$ at COMPASS and indication of a new state $X (3872)$

M. Aghasyan, R. Akhunzyanov, M. G. Alexeev +224

We have searched for exclusive production of exotic charmonia in the reaction $I^¼^{+} N \to I^¼^{+} (J / I ¨ I ¨ ^{+} I ¨ ^{-}) I ¨ ^{\pm} N^{'}$ using COMPASS data collected with incoming muo…

hep-ph2017

New analysis of $I^\cdot I ¨ $ tensor resonances measured at the COMPASS experiment

A. Jackura, C. Fernandez-Ramirez, M. Mikhasenko +232

We present a new amplitude analysis of the $I^\cdot I ¨ $ $D$ -wave in $I ¨ ^{-} p \to I^\cdot I ¨ ^{-} p$ measured by COMPASS. Employing an analytical model based on the principles of the relativistic $S…

hep-ex2021

Spin Density Matrix Elements in Exclusive $I ¨ $ Meson Muoproduction $^{*}$

M. G. Alexeev, G. D. Alexeev, A. Amoroso +197

We report on a measurement of Spin Density Matrix Elements (SDMEs) in hard exclusive $I ¨ $ meson muoproduction on the proton at COMPASS using 160 GeV/ $c$ polarised $I^¼^{+}$ and $ Î…

hep-ex2019

Measurement of the cross section for hard exclusive $I ¨ ^{0}$ leptoproduction

M. G. Alexeev, G. D. Alexeev, A. Amoroso +199

We report on a measurement of hard exclusive $I ¨ ^{0}$ muoproduction on the proton by COMPASS using 160 GeV/ $c$ polarised $I^¼^{+}$ and $I^¼^{-}$ beams of the CERN SPS impinging on a liquid…

Publications (21)

The Linear Collider Facility (LCF) at CERN

Antiproton over proton and K− over K+ multiplicity ratios at high z in DIS

Measurement of PT​-weighted Sivers asymmetries in leptoproduction of hadrons

Light isovector resonances in I¨−p→I¨−I¨−I¨+p at 190 GeV/c

First measurement of transverse-spin-dependent azimuthal asymmetries in the Drell-Yan process

The exotic meson I¨1​(1600) with JPC=1−+ and its decay into I¨(770)I¨

Contribution of exclusive diffractive processes to the measured azimuthal asymmetries in SIDIS

Letter of Intent: A New QCD facility at the M2 beam line of the CERN SPS (COMPASS++/AMBER)

Transverse Extension of Partons in the Proton probed by Deeply Virtual Compton Scattering

K− over K+ multiplicity ratio for kaons produced in DIS with a large fraction of the virtual-photon energy

Transverse-momentum-dependent Multiplicities of Charged Hadrons in Muon-Deuteron Deep Inelastic Scattering

Precision determination of the track-position resolution of beam telescopes

A Linear Collider Vision for the Future of Particle Physics

Probing transversity by measuring I^ polarisation in SIDIS

Longitudinal double-spin asymmetry A1p​ and spin-dependent structure function g1p​ of the proton at small values of x and Q2

Triangle Singularity as the Origin of the a1​(1420)

Study of the band-gap energy of radiation-damaged silicon

Search for muoproduction of X(3872) at COMPASS and indication of a new state X(3872)

New analysis of I^⋅I¨ tensor resonances measured at the COMPASS experiment

Spin Density Matrix Elements in Exclusive I¨ Meson Muoproduction ∗

Measurement of the cross section for hard exclusive I¨0 leptoproduction

Antiproton over proton and K $^{-}$ over K $^{+}$ multiplicity ratios at high $z$ in DIS

Measurement of $P_{T}$ -weighted Sivers asymmetries in leptoproduction of hadrons

Light isovector resonances in $I ¨ ^{-} p \to I ¨ ^{-} I ¨ ^{-} I ¨ ^{+} p$ at 190 GeV/ $c$

The exotic meson $I ¨ _{1} (1600)$ with $J^{P C} = 1^{-+}$ and its decay into $I ¨ (770) I ¨ $

K $^{-}$ over K $^{+}$ multiplicity ratio for kaons produced in DIS with a large fraction of the virtual-photon energy

Probing transversity by measuring $I^$ polarisation in SIDIS

Longitudinal double-spin asymmetry $A_{1}^{p}$ and spin-dependent structure function $g_{1}^{p}$ of the proton at small values of $x$ and $Q^{2}$

Triangle Singularity as the Origin of the $a_{1} (1420)$

Search for muoproduction of $X (3872)$ at COMPASS and indication of a new state $X (3872)$

New analysis of $I^\cdot I ¨ $ tensor resonances measured at the COMPASS experiment

Spin Density Matrix Elements in Exclusive $I ¨ $ Meson Muoproduction $^{*}$

Measurement of the cross section for hard exclusive $I ¨ ^{0}$ leptoproduction