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Production of KS0, K*(892) and f0(1020) in minimum bias events and KS0 and ?0 in jets in pp¯ collisions at vs=1.96 TeV

Abstract: ABSTRACT: We report measurements of the inclusive transverse momentum (pT ) distribution of centrally produced K0, K? ð892Þ, and 0ð1020Þ mesons up to pT ¼ 10 GeV=c in minimum bias events, and K0 and A0 particles up to p 20 GeV=c in jets with transverse energy between 25 and 160 GeV in pp- collisions. The data were taken with the CDF II detector at the Fermilab Tevatron at s ¼ 1:96 TeV. We find that as pT increases, the pT slopes of the three mesons (K0, K? , and ) are similar. And using our previous A0 results from minimum bias events, we show that the ratio of A0 to K0 as a function of pT in minimum bias events becomes similar to the fairly constant ratio in jets at pT ~ 5 GeV=c. This suggests that the particles with pT * 5 GeV=c in minimum bias events are from ??soft?? jets, and that the pT slope of particles in jets is insensitive to light quark flavor (u, d, or s) and to the number of valence quarks. We also find that for pT & 4 GeV relatively more A0 baryons are produced in minimum bias events than in jets.

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 Autoría: Aaltonen T., Amerio S., Amidei D., Anastassov A., Annovi A., Antos J., Apollinari G., Appel J.A., Arisawa T., Artikov A., Asaadi J., Ashmanskas W., Auerbach B., Aurisano A., Azfar F., Badgett W., Bae T., Barbaro-Galtieri A., Barnes V.E., Barnett B.A., Barria P., Bartos P., Bauce M., Bedeschi F., Behari S., Bellettini G., Bellinger J., Benjamin D., Beretvas A., Bhatti A., Bland K.R., Blumenfeld B., Bocci A., Bodek A., Bortoletto

 Fuente: Physical Review D - Particles, Fields, Gravitation and Cosmology, 2013, 88(9), 092005

Editorial: American Physical Society

 Fecha de publicación: 26/11/2013

Nº de páginas: 16

Tipo de publicación: Artículo de Revista

 DOI: 10.1103/PhysRevD.88.092005

ISSN: 1550-7998,1550-2368,2470-0010,2470-0029

Url de la publicación: https://doi.org/10.1103/PhysRevD.88.092005