Measurement of Associated Production of Z Bosons with Charm Quark Jets in pp¯ Collisions at s√=1.96 TeV

Abazov, V.M. and Abbott, B. and Acharya, B.S. and Adams, M. and Adams, T. and Agnew, J.P. and Alexeev, G.D. and Alkhazov, G. and Alton, A. and Askew, A. and Atkins, S. and Augsten, K. and Avila, C. and Badaud, F. and Bagby, L. and Baldin, B. and Bandurin, D.V. and Banerjee, S. and Barberis, E. and Baringer, P. and Bartlett, J.F. and Bassler, U. and Bazterra, V. and Bean, A. and Begalli, M. and Bellantoni, L. and Beri, S.B. and Bernardi, G. and Bernhard, R. and Bertram, I. and Besanifmmode çelse çon, M. and Beuselinck, R. and Bhat, P.C. and Bhatia, S. and Bhatnagar, V. and Blazey, G. and Blessing, S. and Bloom, K. and Boehnlein, A. and Boline, D. and Boos, E.E. and Borissov, G. and Brandt, A. and Brandt, O. and Brock, R. and Fox, H. and Price, D. and Ratoff, P.N. and Ross, A. and Williams, M.R.J. (2014) Measurement of Associated Production of Z Bosons with Charm Quark Jets in pp¯ Collisions at s√=1.96  TeV. Physical review letters, 112 (4). ISSN 1079-7114

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We present the first measurements of the ratios of cross sections σ(pp¯→Z+c jet)/σ(pp¯→Z+jet) and σ(pp¯→Z+c jet)/σ(pp¯→Z+b jet) for the associated production of a Z boson with at least one charm or bottom quark jet. Jets have transverse momentum ​pjetT​>20  GeV and pseudorapidity |​ηjet​|<2.5. These cross section ratios are measured differentially as a function of jet and Z boson transverse momenta, based on 9.7  fb−1 of pp¯ collisions collected with the D0 detector at the Fermilab Tevatron Collider at s√=1.96  TeV. The measurements show significant deviations from perturbative QCD calculations and predictions from various event generators.

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Journal Article
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Physical review letters
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© 2014 American Physical Society
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03 Feb 2014 16:13
Last Modified:
10 Jul 2020 03:17