A. Kerbizi

activity

20162026

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

122 citations · 765 across the 51 of their papers we have counts for

collaborators

53 papers

hep-ph2026

Hyperon polarization in deep inelastic scattering

A. Kerbizi

We have implemented the recent extension of the string+ $^{3} P_{0}$ model of spin-dependent hadronization that includes the production of spin- $1/2$ baryons in the Pythia event genera…

hep-ex2026

First Observation of an Exotic Reggeon

G. D. Alexeev, M. G. Alexeev, C. Alice +180

We present new \compass high-statistics measurements of the peripheral production of $η π^{-}$ and $η^{'} π^{-}$ pairs in the reactions $π^{-} p \to η^{(')} π^{-} p$ . For the first t…

hep-ph2026

StringSpinner 2.0: Enabling quark spin effects in PYTHIA for $e^{+} e^{-}$ annihilation

A. Kerbizi, L. Lönnblad

The StringSpinner package, which implements quark spin effects in the PYTHIA event generator using the string+ $^{3} P_{0}$ model of hadronization, is extended to handle the process $e…

hep-ex2025

Dihadron Transverse-Spin Asymmetries in Muon-Deuteron Deep-Inelastic Scattering

G. D. Alexeev, M. G. Alexeev, C. Alice +168

In 2022, the COMPASS collaboration performed semi-inclusive measurements of deep-inelastic muon-scattering on a transversely polarised deuteron (6LiD) target. From these data, tran…

hep-ph2025

A model for baryon production in spin-dependent string fragmentation

Albi Kerbizi, Xavier Artru

We introduce spin-1/2 baryons in the string+ $^{3} P_{0}$ model of hadronization, previously restricted to the production of pseudoscalar and vector mesons. Baryons are modeled as quar…

hep-ex2025

Spectroscopy of Strange Mesons and First Observation of a Strange Crypto-Exotic State with $J^{P} = 0^{-}$

G. D. Alexeev, M. G. Alexeev, C. Alice +160

We measured the strange-meson spectrum in the scattering reaction $K^{-} + p \to K^{-} π^{-} π^{-} + p$ with the COMPASS spectrometer at CERN. Using the world's largest sample of…

hep-ex2024

Measurement of the hard exclusive $π^{0}$ muoproduction cross section at COMPASS

G. D. Alexeev, M. G. Alexeev, C. Alice +169

A new and detailed measurement of the cross section for hard exclusive neutral-pion muoproduction on the proton was performed in a wide kinematic region, with the photon virtuality…

hep-ph2024

Monte Carlo results on the Collins asymmetries in $e^{+} e^{-}$ annihilation

A. Kerbizi, L. Lönnblad, A. Martin

The quark spin effects have been introduced in the Pythia 8 Monte Carlo event generator for the simulation of $e^{+} e^{-}$ annihilation by interfacing the generator with the StringSpin…

hep-ph2024

Quark spin effects in $e^{+} e^{-}$ annihilation: a Monte Carlo event generator study

A. Kerbizi, L. Lönnblad, A. Martin

Quark spin effects in $e^{+} e^{-}$ annihilation to pseudoscalar and vector mesons are implemented for the first time in the PYTHIA Monte Carlo event generator. The spin-dependent fragm…

hep-ex2023

High-statistics measurement of Collins and Sivers asymmetries for transversely polarised deuterons

G. D. Alexeev, M. G. Alexeev, C. Alice +183

New results are presented on a high-statistics measurement of Collins and Sivers asymmetries of charged hadrons produced in deep inelastic scattering of muons on a transversely pol…

hep-ex2023

Final COMPASS results on the transverse-spin-dependent azimuthal asymmetries in the pion-induced Drell-Yan process

G. D. Alexeev, M. G. Alexeev, C. Alice +180

The COMPASS Collaboration performed measurements of the Drell-Yan process in 2015 and 2018 using a 190 GeV/c $π^{-}$ beam impinging on a transversely polarised ammonia target. Comb…

hep-ph2023

Simulation of $e^{+} e^{-}$ annihilation with quark spin effects

A. Kerbizi, L. Lönnblad, A. Martin

The quark spin effects are introduced for the first time in the string fragmentation routine of the Pythia 8 Monte Carlo event generator for the simulation of $e^{+} e^{-}$ annihilation…

hep-ph2023

String fragmentation of a quark pair with entangled spin states: application to $e^{+} e^{-}$ annihilation

A. Kerbizi, X. Artru

We present a recursive quantum mechanical model for the fragmentation of a string stretched between a quark and an antiquark with entangled spin states. The quarks are assumed to b…

hep-ph2023

Modeling spin effects in electron-positron annihilation to hadrons

A. Kerbizi, X. Artru

The string+ $^{3} P_{0}$ model of spin-dependent hadronization is applied to the fragmentation of a string stretched between a quark and an antiquark with entangled spin states, assume…

physics.ins-det2023

Long term experience with perfluorobutane in COMPASS RICH

F. Bradamante, A. Bressan, A. Cicuttin +16

COMPASS RICH-1 has used high-purity perfluorobutane as radiator gas since 2001. The operation and control of the radiator gas has evolved over years with continuous improvements. W…

nucl-ex2023★ 19 cited

Strong Interaction Physics at the Luminosity Frontier with 22 GeV Electrons at Jefferson Lab

A. Accardi, P. Achenbach, D. Adhikari +441

This document presents the initial scientific case for upgrading the Continuous Electron Beam Accelerator Facility (CEBAF) at Jefferson Lab (JLab) to 22 GeV. It is the result of a…

hep-ph2023★ 1 cited

Extending StringSpinner to handle vector-meson spin

Albi Kerbizi, Leif Lönnblad

Quark spin effects in hadronization were recently included in the PYTHIA 8 Monte Carlo event generator for the simulation of the deep inelastic scattering (DIS) process off a polar…

hep-ex2023

Transverse-spin-dependent azimuthal asymmetries of pion and kaon pairs produced in muon-proton and muon-deuteron semi-inclusive deep inelastic scattering

The COMPASS Collaboration

A set of measurements of azimuthal asymmetries in the production of pairs of identified hadrons in deep-inelastic scattering of muons on transversely polarised $^{6}$ LiD (deuteron) a…

hep-ex2022★ 9 cited

Collins and Sivers transverse-spin asymmetries in inclusive muoproduction of $ρ^{0}$ mesons

G. D. Alexeev, M. G. Alexeev, C. Alice +188

The production of vector mesons in deep inelastic scattering is an interesting yet scarsely explored channel to study the transverse spin structure of the nucleon and the related p…

hep-ph2022

Adding quark spin effects to PYTHIA string fragmentation

Albi Kerbizi, Leif Lönnblad

Quark spin effects in hadronization have been recently included in the PYTHIA 8 event generator for the simulation of the deep inelastic scattering (DIS) process off a polarized nu…

hep-ex2022★ 1 cited

Spin Density Matrix Elements in Exclusive $ρ^{0}$ Meson Muoproduction

G. D. Alexeev, M. G. Alexeev, C. Alice +186

We report on a measurement of Spin Density Matrix Elements (SDMEs) in hard exclusive $ρ^{0}$ meson muoproduction at COMPASS using 160~GeV/ $c$ polarised $μ^{+}$ and $μ^{-}$ beams im…

hep-ex2022★ 2 cited

Double $J / ψ$ production in pion-nucleon scattering at COMPASS

G. D. Alexeev, M. G. Alexeev, A. Amoroso +191

We present the study of the production of double $J / ψ$ mesons using COMPASS data collected with a 190 GeV/ $c$ $π^{-}$ beam scattering off NH $_{3}$ , Al and W targets. Kinematic distri…

hep-ph2022

Simulation of the Polarized Quark Fragmentation with Vector Meson Production

Albi Kerbizi, Xavier Artru, Anna Martin

The recently developed quantum mechanical string+ $^{3} P_{0}$ model of polarized quark fragmentation with pseudoscalar and vector meson production has been implemented in a stand alon…

hep-ph2022★ 1 cited

The String+ $^{3} P_{0}$ Model of Hadronization

Xavier Artru, Albi Kerbizi

We present the main theoretical aspects of the quantum mechanical string+ $^{3} P_{0}$ model of polarized quark fragmentation for pseudoscalar and vector meson production. The model is…

Hyperon polarization in deep inelastic scattering

First Observation of an Exotic Reggeon

StringSpinner 2.0: Enabling quark spin effects in PYTHIA for e+e− annihilation

Dihadron Transverse-Spin Asymmetries in Muon-Deuteron Deep-Inelastic Scattering

A model for baryon production in spin-dependent string fragmentation

Spectroscopy of Strange Mesons and First Observation of a Strange Crypto-Exotic State with JP=0−

Measurement of the hard exclusive π0 muoproduction cross section at COMPASS

Monte Carlo results on the Collins asymmetries in e+e− annihilation

Quark spin effects in e+e− annihilation: a Monte Carlo event generator study

High-statistics measurement of Collins and Sivers asymmetries for transversely polarised deuterons

Final COMPASS results on the transverse-spin-dependent azimuthal asymmetries in the pion-induced Drell-Yan process

Simulation of e+e− annihilation with quark spin effects

String fragmentation of a quark pair with entangled spin states: application to e+e− annihilation

Modeling spin effects in electron-positron annihilation to hadrons

Long term experience with perfluorobutane in COMPASS RICH

Strong Interaction Physics at the Luminosity Frontier with 22 GeV Electrons at Jefferson Lab

Extending StringSpinner to handle vector-meson spin

Transverse-spin-dependent azimuthal asymmetries of pion and kaon pairs produced in muon-proton and muon-deuteron semi-inclusive deep inelastic scattering

Collins and Sivers transverse-spin asymmetries in inclusive muoproduction of ρ0 mesons

Adding quark spin effects to PYTHIA string fragmentation

Spin Density Matrix Elements in Exclusive ρ0 Meson Muoproduction

Double J/ψ production in pion-nucleon scattering at COMPASS

Simulation of the Polarized Quark Fragmentation with Vector Meson Production

The String+3P0​ Model of Hadronization

StringSpinner 2.0: Enabling quark spin effects in PYTHIA for $e^{+} e^{-}$ annihilation

Spectroscopy of Strange Mesons and First Observation of a Strange Crypto-Exotic State with $J^{P} = 0^{-}$

Measurement of the hard exclusive $π^{0}$ muoproduction cross section at COMPASS

Monte Carlo results on the Collins asymmetries in $e^{+} e^{-}$ annihilation

Quark spin effects in $e^{+} e^{-}$ annihilation: a Monte Carlo event generator study

Simulation of $e^{+} e^{-}$ annihilation with quark spin effects

String fragmentation of a quark pair with entangled spin states: application to $e^{+} e^{-}$ annihilation

Collins and Sivers transverse-spin asymmetries in inclusive muoproduction of $ρ^{0}$ mesons

Spin Density Matrix Elements in Exclusive $ρ^{0}$ Meson Muoproduction

Double $J / ψ$ production in pion-nucleon scattering at COMPASS

The String+ $^{3} P_{0}$ Model of Hadronization