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Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/22336
Título

Measurement of particle production and inclusive differential cross sections in p(p)over-bar collisions at root s=1.96 TeV

AutorCDF Collaboration; Cabrera, Susana ; Cuenca Almenar, Cristóbal ; Álvarez González, B.; Casal, Bruno ; Cuevas, Javier ; Gómez, G. ; Rodrigo, Teresa ; Ruiz Jimeno, Alberto ; Scodellaro, Luca ; Vila, Iván ; Vilar, Rocío ; Aaltonen, T.
Fecha de publicación12-jun-2009
EditorAmerican Physical Society
CitaciónPhysical Review - Section D - Particles and Fields 79 (11): 112005 (2009)
ResumenWe report a set of measurements of particle production in inelastic p (p) over bar collisions collected with a minimum-bias trigger at the Tevatron Collider with the CDF II experiment. The inclusive charged particle transverse momentum differential cross section is measured, with improved precision, over a range about ten times wider than in previous measurements. The former modeling of the spectrum appears to be incompatible with the high particle momenta observed. The dependence of the charged particle transverse momentum on the event particle multiplicity is analyzed to study the various components of hadron interactions. This is one of the observable variables most poorly reproduced by the available Monte Carlo generators. A first measurement of the event transverse energy sum differential cross section is also reported. A comparison with a PYTHIA prediction at the hadron level is performed. The inclusive charged-particle differential production cross section is fairly well reproduced only in the transverse momentum range available from previous measurements. At higher momentum the agreement is poor. The transverse energy sum is poorly reproduced over the whole spectrum. The dependence of the charged particle transverse momentum on the particle multiplicity needs the introduction of more sophisticated particle production mechanisms, such as multiple parton interactions, in order to be better explained.
Versión del editorhttp://dx.doi.org/ 10.1103/PhysRevD.79.112005
URIhttp://hdl.handle.net/10261/22336
DOI10.1103/PhysRevD.79.112005
ISSN1550-7998
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