A measurement of the inclusive production of 0 mesons in hadronic Z decays is presented and compared to Monte Carlo model predictions. The analysis is based on approximately 2 million hadronic events recorded with the ALEPH detector at LEP at a centre-of-mass energy of s=912 GeV . Neutral pions are reconstructed using photons measured in the electromagnetic calorimeter and photons from conversion pairs. The inclusive 0 momentum spectrum is measured in the range 0025xp=ppbeam1 . In this range the number of 0 per hadronic Z is found to be 480007(stat)031(sys). The differential inclusive 0 cross section is also measured as a function of transverse momentum with respect to the event plane (pTin and pTout).
Inclusive production of neutral pions in hadronic Z decays / R. Barate et al.; E.Focardi; V.Ciulli. - In: ZEITSCHRIFT FÜR PHYSIK. C, PARTICLES AND FIELDS. - ISSN 0170-9739. - ELETTRONICO. - 74:(1997), pp. 451-461. [10.1007/s002880050407]
Inclusive production of neutral pions in hadronic Z decays
FOCARDI, ETTORE;CIULLI, VITALIANO
1997
Abstract
A measurement of the inclusive production of 0 mesons in hadronic Z decays is presented and compared to Monte Carlo model predictions. The analysis is based on approximately 2 million hadronic events recorded with the ALEPH detector at LEP at a centre-of-mass energy of s=912 GeV . Neutral pions are reconstructed using photons measured in the electromagnetic calorimeter and photons from conversion pairs. The inclusive 0 momentum spectrum is measured in the range 0025xp=ppbeam1 . In this range the number of 0 per hadronic Z is found to be 480007(stat)031(sys). The differential inclusive 0 cross section is also measured as a function of transverse momentum with respect to the event plane (pTin and pTout).
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