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Measurement of the D+ -meson production cross section at low transverse momentum in pp¯ collisions at s=1.96 TeV

  • Author(s): Aaltonen, T
  • Amerio, S
  • Amidei, D
  • Anastassov, A
  • Annovi, A
  • Antos, J
  • Apollinari, G
  • Appel, JA
  • Arisawa, T
  • Artikov, A
  • Asaadi, J
  • Ashmanskas, W
  • Auerbach, B
  • Aurisano, A
  • Azfar, F
  • Badgett, W
  • Bae, T
  • Barbaro-Galtieri, A
  • Barnes, VE
  • Barnett, BA
  • Barria, P
  • Bartos, P
  • Bauce, M
  • Bedeschi, F
  • Behari, S
  • Bellettini, G
  • Bellinger, J
  • Benjamin, D
  • Beretvas, A
  • Bhatti, A
  • Bland, KR
  • Blumenfeld, B
  • Bocci, A
  • Bodek, A
  • Bortoletto, D
  • Boudreau, J
  • Boveia, A
  • Brigliadori, L
  • Bromberg, C
  • Brucken, E
  • Budagov, J
  • Budd, HS
  • Burkett, K
  • Busetto, G
  • Bussey, P
  • Butti, P
  • Buzatu, A
  • Calamba, A
  • Camarda, S
  • Campanelli, M
  • Canelli, F
  • Carls, B
  • Carlsmith, D
  • Carosi, R
  • Carrillo, S
  • Casal, B
  • Casarsa, M
  • Castro, A
  • Catastini, P
  • Cauz, D
  • Cavaliere, V
  • Cerri, A
  • Cerrito, L
  • Chen, YC
  • Chertok, M
  • Chiarelli, G
  • Chlachidze, G
  • Cho, K
  • Chokheli, D
  • Clark, A
  • Clarke, C
  • Convery, ME
  • Conway, J
  • Corbo, M
  • Cordelli, M
  • Cox, CA
  • Cox, DJ
  • Cremonesi, M
  • Cruz, D
  • Cuevas, J
  • Culbertson, R
  • D'Ascenzo, N
  • Datta, M
  • De Barbaro, P
  • Demortier, L
  • Deninno, M
  • D'Errico, M
  • Devoto, F
  • Di Canto, A
  • Di Ruzza, B
  • Dittmann, JR
  • Donati, S
  • D'Onofrio, M
  • Dorigo, M
  • Driutti, A
  • Ebina, K
  • Edgar, R
  • Erbacher, R
  • Errede, S
  • Esham, B
  • et al.

Published Web Location

http://doi.org/10.1103/PhysRevD.95.092006
No data is associated with this publication.
Abstract

© 2017 American Physical Society. We report on a measurement of the D+-meson production cross section as a function of transverse momentum (pT) in proton-antiproton (pp) collisions at 1.96 TeV center-of-mass energy, using the full data set collected by the Collider Detector at Fermilab in Tevatron Run II and corresponding to 10 fb-1 of integrated luminosity. We use D+→K-π+π+ decays fully reconstructed in the central rapidity region |y|<1 with transverse momentum down to 1.5 GeV/c, a range previously unexplored in pp collisions. Inelastic pp-scattering events are selected online using minimally biasing requirements followed by an optimized offline selection. The K-π+π+ mass distribution is used to identify the D+ signal, and the D+ transverse impact-parameter distribution is used to separate prompt production, occurring directly in the hard-scattering process, from secondary production from b-hadron decays. We obtain a prompt D+ signal of 2950 candidates corresponding to a total cross section σ(D+,1.5

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