A. Lanaro

activity

19962024

π^{+} π^{-}

atom lifetime

106 citations · 255 across the 11 of their papers we have counts for

collaborators

11 papers

physics.ins-det2024

Longevity Studies of CSC Prototypes Operating with Ar+CO $_{2}$ Gas Mixture and Different Fractions of CF $_{4}$

Emanuela Barberis, Nebojsa Begovic, Nicholas Haubrich +17

Studies of Cathode Strip Chamber longevity, comparing Ar+CO2 gas mixtures with fractions of 5%, 2%, and 0% CF4, were performed using several small cathode strip prototype chambers.…

hep-ex2022

Investigation of $K^{+} K^{-}$ pairs in the effective mass region near $2 m_{K}$

B. Adeva, L. Afanasyev, A. Anania +53

The DIRAC experiment at CERN investigated in the reaction $p (24 GeV /c) + Ni$ the particle pairs $K^{+} K^{-}, π^{+} π^{-}$ and $p p ˉ$ with relative momentum $Q$ in the pair s…

hep-ex2018★ 5 cited

First measurement of a long-lived $π^{+} π^{-}$ atom lifetime

B. Adeva, L. Afanasyev, A. Anania +56

The adapted DIRAC experiment at the CERN PS accelerator observed for the first time long-lived hydrogen-like $π^{+} π^{-}$ atoms, produced by protons hitting a beryllium target. A part…

hep-ex2017★ 11 cited

Measurement of the $π K$ atom lifetime and the $π K$ scattering length

DIRAC Collaboration, B. Adeva, L. Afanasyev +62

After having announced the statistically significant observation (5.6~ $σ$ ) of the new exotic $π K$ atom, the DIRAC experiment at the CERN proton synchrotron presents the measurement…

hep-ex2016★ 14 cited

Observation of $π^{-} K^{+}$ and $π^{+} K^{-}$ atoms

DIRAC Collaboration

The observation of hydrogen-like $π K$ atoms, consisting of $π^{-} K^{+}$ or $π^{+} K^{-}$ mesons, is presented. The atoms have been produced by 24 GeV/ $c$ protons from the CERN PS accelera…

nucl-ex2014★ 25 cited

First $π K$ atom lifetime and $π K$ scattering length measurements

B. Adeva, L. Afanasyev, Y. Allkofer +65

The results of a search for hydrogen-like atoms consisting of $π^{\mp} K^{\pm}$ mesons are presented. Evidence for $π K$ atom production by 24 GeV/c protons from CERN PS interacting…

hep-ex2011★ 52 cited

Determination of $π π$ scattering lengths from measurement of $π^{+} π^{-}$ atom lifetime

B. Adeva, L. Afanasyev, M. Benayoun +92

The DIRAC experiment at CERN has achieved a sizeable production of $π^{+} π^{-}$ atoms and has significantly improved the precision on its lifetime determination. From a sample of 21227…

hep-ex2009★ 17 cited

Evidence for $π K$ -atoms with DIRAC

B. Adeva, L. Afanasyev, Y. Allkofer +77

We present evidence for the first observation of electromagnetically bound $π^{\pm} K^{\mp}$ -pairs ( $π K$ -atoms) with the DIRAC experiment at the CERN-PS. The $π K$ -atoms are produced by…

hep-ex2005★ 106 cited

First measurement of the $π^{+} π^{-}$ atom lifetime

The DIRAC collaboration

The goal of the DIRAC experiment at CERN (PS212) is to measure the $π^{+} π^{-}$ atom lifetime with 10% precision. Such a measurement would yield a precision of 5% on the value of the $…

hep-ex1998★ 9 cited

Measurements of the reaction $p ˉ p \to ϕ η$ of antiproton annihilation at rest at three hydrogen target densities

OBELIX Collaboration, V. Alberico, A. Bertin

The proton-antiproton annihilation at rest into the $ϕ η$ final state was measured for three different target densities: liquid hydrogen, gaseous hydrogen at NTP and at a low pressu…

hep-ex1996★ 16 cited

New data on OZI rule violation in bar{p}p annihilation at rest

OBELIX Collaboration

The results of a measurement of the ratio R = Y(phi pi+ pi-) / Y(omega pi+ pi-) for antiproton annihilation at rest in a gaseous and in a liquid hydrogen target are presented. It w…

Longevity Studies of CSC Prototypes Operating with Ar+CO2​ Gas Mixture and Different Fractions of CF4​

Investigation of K+K− pairs in the effective mass region near 2mK​

First measurement of a long-lived π+π− atom lifetime

Measurement of the πK atom lifetime and the πK scattering length

Observation of π−K+ and π+K− atoms

First πK atom lifetime and πK scattering length measurements

Determination of ππ scattering lengths from measurement of π+π− atom lifetime

Evidence for πK-atoms with DIRAC

First measurement of the π+π− atom lifetime

Measurements of the reaction pˉ​p→ϕη of antiproton annihilation at rest at three hydrogen target densities