F. Takeutchi

First measurement of the π+π- atom lifetime

The goal of the DIRAC experiment at CERN (PS212) is to measure the

DIRAC: A High Resolution Spectrometer for Pionium Detection

pi^+pi^-

Search for the H dibaryon in (K−, K+) reaction with scintillating fiber active target

atom lifetime with 10% precision. Such a measurement would yield a precision of 5% on the value of the

Detection of π+π− atoms with the DIRAC spectrometer at CERN

S

Quasifree p(K-,K+)Xi- reaction in nuclear emulsion

-wave

First πK atom lifetime and πK scattering length measurements

pipi

The multilevel trigger system of the DIRAC experiment

scattering lengths combination

Silicon strip detector as a real-time, fast, medium-segmented hodoscope

|a_0-a_2|

High resolution scintillating-fibre hodoscope and its readout using peak-sensing algorithm

. Based on part of the collected data we present a first result on the lifetime,

First observation of long-lived π + π − atoms

tau=[2.91 ^{+0.49}_{-0.62}]times 10^{-15}