Measurement of the differential cross section of photon plus jet production in $pp$ collisions at $s=1.96TeV$

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. (2013) Measurement of the differential cross section of photon plus jet production in $pp$ collisions at $s=1.96TeV$. Physical Review D, 88 (7). ISSN 1550-7998

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We study the process of associated photon and jet production, pp̅ →γ+jet+X, using 8.7  fb-1 of integrated luminosity collected by the D0 detector at the Fermilab Tevatron Collider at a center-of-mass energy √s=1.96  TeV. Photons are reconstructed with rapidity |yγ|<1.0 or 1.5<|yγ|<2.5 and transverse momentum pTγ>20  GeV. The highest-pT jet is required to be in one of four rapidity regions up to |yjet|≤3.2. For each rapidity configuration we measure the differential cross sections in pTγ separately for events with the same sign (yγyjet>0) and opposite signs (yγyjet≤0) of photon and jet rapidities. We compare the measured triple-differential cross sections, d3σ/dpTγdyγdyjet, to next-to-leading order (NLO) perturbative QCD calculations using different sets of parton distribution functions, and to predictions from the sherpa and pythia Monte Carlo event generators. The NLO calculations are found to be in general agreement with the data but do not describe all kinematic regions.

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Journal Article
Journal or Publication Title:
Physical Review D
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© 2013 American Physical Society
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Deposited On:
02 Dec 2013 14:51
Last Modified:
02 Jul 2020 01:19