Naslov
Measurement of dijet k(T) in p-Pb collisions at root s(NN)=5.02 TeV

Autori
Adam, J. ; Antičić, Tome ; Gotovac, Sven ; Mudnić, Eugen ; Vicković, Linda ; Planinić, Mirko ; Poljak, Nikola ; Simatović, Goran ; Utrobičić, Antonija ; Zyzak, M.

Izvornik
Physics letters. B (0370-2693) 746 (2015); 385-395

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
nuclear experiment (nucl-ex) ; high energy physics - experiment (hep-ex) ; dijet ; kT ; p–Pb ; 5.02 TeV ; ALICE ; CERN

Sažetak
A measurement of dijet correlations in p–Pb collisions at root sNN=5.02 TeV with the ALICE detector is presented. Jets are reconstructed from charged particles measured in the central tracking detectors and neutral energy deposited in the electromagnetic calorimeter. The transverse momentum of the full jet (clustered from charged and neutral constituents) and charged jet (clustered from charged particles only) is corrected event-by-event for the contribution of the underlying event, while corrections for underlying event fluctuations and finite detector resolution are applied on an inclusive basis. A projection of the dijet transverse momentum, kTy=pT, jetch+nesin(Δφdijet) with ΔφdijetΔφdijet the azimuthal angle between a full and charged jet and pT, jetch+ne the transverse momentum of the full jet, is used to study nuclear matter effects in p–Pb collisions. This observable is sensitive to the acoplanarity of dijet production and its potential modification in p–Pb collisions with respect to pp collisions. Measurements of the dijet kTykTy as a function of the transverse momentum of the full and recoil charged jet, and the event multiplicity are presented. No significant modification of kTykTy due to nuclear matter effects in p–Pb collisions with respect to the event multiplicity or a PYTHIA8 reference is observed.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

Napomena
ALICE Collaboration

POVEZANOST RADA