Azimuthal decorrelation of jets widely separated in rapidity in pp collisions at $\sqrt{s} =$ 7 TeV

Khachatryan, Vardan

doi:10.1007/JHEP08(2016)139

Azimuthal decorrelation of jets widely separated in rapidity in pp collisions at $$\sqrt{s} =$$ 7 TeV

Journal Article · Wed Aug 24 00:00:00 EDT 2016 · Journal of High Energy Physics (Online)

DOI:https://doi.org/10.1007/JHEP08(2016)139· OSTI ID:1244436

Khachatryan, Vardan ^[1]

Yerevan Physics Institute, Yerevan (Armenia). et al.

The decorrelation in the azimuthal angle between the most forward and the most backward jets (Mueller-Navelet jets) is measured in data collected in pp collisions with the CMS detector at the LHC at $$\sqrt{s} =$$ 7 TeV. The measurement is presented in the form of distributions of azimuthal-angle differences, $$\Delta\phi$$, between the Mueller-Navelet jets, the average cosines of $$(\pi-\Delta\phi)$$, $$2(\pi-\Delta\phi)$$, and $$3(\pi-\Delta\phi)$$, and ratios of these cosines. The jets are required to have transverse momenta, $$p_{\mathrm{T}}$$, in excess of 35 GeV and rapidities, $| y |$, of less than 4.7. The results are presented as a function of the rapidity separation, $$\Delta{y}$$, between the Mueller-Navelet jets, reaching $$\Delta{y}$$ up to 9.4 for the first time. Lastly, the results are compared to predictions of various Monte Carlo event generators and to analytical predictions based on the DGLAP and BFKL parton evolution schemes.

View Accepted Manuscript (DOE)

Research Organization:: Argonne National Laboratory (ANL), Argonne, IL (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)

Contributing Organization:: CMS Collaboration

Grant/Contract Number:: AC02-07CH11359

OSTI ID:: 1244436

Alternate ID(s):: OSTI ID: 22610478

Report Number(s):: CERN-PH-EP--2015-309; CMS-FSQ--12-002; FERMILAB-PUB--16-022-CMS; arXiv:1601.06713; 1416827

Journal Information:: Journal of High Energy Physics (Online), Journal Name: Journal of High Energy Physics (Online) Vol. 2016; ISSN 1029-8479

Publisher:: Springer BerlinCopyright Statement

Country of Publication:: United States

Language:: English

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