A measurement of the inclusive production of pi0 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 sqrt(s) = 91.2 GeV. Neutral pions are reconstructed using photons from conversion pairs and photons measured in the electromagnetic calorimeter. The inclusive pi0 momentum spectrum is measured in the range from 0.025 < x(p) = p/p(beam) < 1 to be 4.80 +/- 0.07(stat) +/- 0.31(sys). The differential inclusive pi0 cross section has also been measured as a function of transverse momentum with respect to the event plane (p_T^in and p_T^out_T).

Inclusive production of neutral pions in hadronic Z decays / Barate, R., Buskulic, D., Decamp, D., Ghez, P., Goy, C., Lees, J.-P., Lucotte, A., Minard, M.-N., Nief, J.-Y., Odier, P., Pietrzyk, B., Casado, M.P., Chmeissani, M., Comas, P., Crespo, J.M., Delfino, M., Fernandez, E., Fernandez-Bosman, M., Garrido, Ll., Juste, A., et al.. - In: ZEITSCHRIFT FÜR PHYSIK. C, PARTICLES AND FIELDS. - ISSN 0170-9739. - STAMPA. - 74:3(1997), pp. 451-461. (28th International Conference on High-energy Physics Warsaw, Poland 25 - 31 Jul 1996).

Inclusive production of neutral pions in hadronic Z decays

De Palma, M.;Gregorio, A.;
1997-01-01

Abstract

A measurement of the inclusive production of pi0 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 sqrt(s) = 91.2 GeV. Neutral pions are reconstructed using photons from conversion pairs and photons measured in the electromagnetic calorimeter. The inclusive pi0 momentum spectrum is measured in the range from 0.025 < x(p) = p/p(beam) < 1 to be 4.80 +/- 0.07(stat) +/- 0.31(sys). The differential inclusive pi0 cross section has also been measured as a function of transverse momentum with respect to the event plane (p_T^in and p_T^out_T).
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11368/3115380
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