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Title: Measurement of low-$$p_T$$ $D^+$ meson production cross-section at CDF II

Abstract

In this paper I report on a measurement of the low- p T D + -meson production cross-section in proton-antiproton collisions at 1.96 TeV center-of-mass energy, using the full data set collected by the CDF experiment at the Tevatron collider during Run II. The measurement is performed in a yet unexplored low transverse momentum range, down to 1.5 GeV/ c . The actual QCD theory cannot predict the behavior of the strong interactions in the low transferred-four-momentum region because in these kinematic conditions the strong coupling constant is of the order of the unity. Thus, a perturbative expansion is not useful. At present, several phenomenological models have been proposed, but they are able to describe only a few aspects of the observed physical quantities and not the full complexity. Experimental results in these conditions are then crucial to test new QCD models. The measurement of the differential cross section at low p T plays an important role in this context allowing refinement of current knowledge. While these results lie within the band of theoretical uncertainty, differences in shape suggest that theoretical predictions can benefit from further refinement taking account of them.

Authors:
 [1]
  1. Oxford Univ. (United Kingdom)
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1375911
Report Number(s):
FERMILAB-CONF-17-323-PPD
Journal ID: ISSN 2405-6014; 1518258; TRN: US1702210
Grant/Contract Number:  
AC02-07CH11359
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Nuclear and Particle Physics Proceedings
Additional Journal Information:
Journal Volume: 282-284; Journal ID: ISSN 2405-6014
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Total cross sections; hadronic decays charmed mesons

Citation Formats

Marchese, L. Measurement of low-$p_T$ $D^+$ meson production cross-section at CDF II. United States: N. p., 2017. Web. doi:10.1016/j.nuclphysbps.2016.12.018.
Marchese, L. Measurement of low-$p_T$ $D^+$ meson production cross-section at CDF II. United States. doi:10.1016/j.nuclphysbps.2016.12.018.
Marchese, L. Fri . "Measurement of low-$p_T$ $D^+$ meson production cross-section at CDF II". United States. doi:10.1016/j.nuclphysbps.2016.12.018. https://www.osti.gov/servlets/purl/1375911.
@article{osti_1375911,
title = {Measurement of low-$p_T$ $D^+$ meson production cross-section at CDF II},
author = {Marchese, L.},
abstractNote = {In this paper I report on a measurement of the low- p T D + -meson production cross-section in proton-antiproton collisions at 1.96 TeV center-of-mass energy, using the full data set collected by the CDF experiment at the Tevatron collider during Run II. The measurement is performed in a yet unexplored low transverse momentum range, down to 1.5 GeV/ c . The actual QCD theory cannot predict the behavior of the strong interactions in the low transferred-four-momentum region because in these kinematic conditions the strong coupling constant is of the order of the unity. Thus, a perturbative expansion is not useful. At present, several phenomenological models have been proposed, but they are able to describe only a few aspects of the observed physical quantities and not the full complexity. Experimental results in these conditions are then crucial to test new QCD models. The measurement of the differential cross section at low p T plays an important role in this context allowing refinement of current knowledge. While these results lie within the band of theoretical uncertainty, differences in shape suggest that theoretical predictions can benefit from further refinement taking account of them.},
doi = {10.1016/j.nuclphysbps.2016.12.018},
journal = {Nuclear and Particle Physics Proceedings},
number = ,
volume = 282-284,
place = {United States},
year = {Fri Mar 17 00:00:00 EDT 2017},
month = {Fri Mar 17 00:00:00 EDT 2017}
}

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