2024-03-28T10:12:12Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/223362018-06-25T10:36:08Zcom_10261_61com_10261_4col_10261_314
2010-03-12T11:55:41Z
urn:hdl:10261/22336
Measurement of particle production and inclusive differential cross sections in p(p)over-bar collisions at root s=1.96 TeV
CDF 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.
We 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.
2010-03-12T11:55:41Z
2010-03-12T11:55:41Z
2009-06-12
artículo
Physical Review - Section D - Particles and Fields 79 (11): 112005 (2009)
1550-7998
http://hdl.handle.net/10261/22336
10.1103/PhysRevD.79.112005
eng
http://dx.doi.org/ 10.1103/PhysRevD.79.112005
openAccess
American Physical Society