scholarly journals Single isolated hadron response measurements in proton-proton collisions at 7 TeV and determination of the jet energy scale uncertainty with the ATLAS detector

2011 ◽  
Author(s):  
Iacopo VIVARELLI
Keyword(s):  
Energy Scale ◽  
Atlas Detector ◽  
Proton Proton ◽  
Proton Collisions ◽  
Scale Uncertainty ◽  
Jet Energy ◽  
Proton Proton Collisions

scholarly journals Determination of jet calibration and energy resolution in proton–proton collisions at $$\sqrt{s} = 8~\hbox {TeV}$$ using the ATLAS detector

2020 ◽  
Vol 80 (12) ◽  
Author(s):  
M. Aaboud ◽  
◽  
G. Aad ◽  
B. Abbott ◽  
O. Abdinov ◽  
...  
Keyword(s):  
Transverse Momentum ◽  
Energy Resolution ◽  
Energy Scale ◽  
Atlas Detector ◽  
Residual Effects ◽  
Proton Proton ◽  
Proton Collisions ◽  
Calibration Scheme ◽  
Jet Energy ◽  
Proton Proton Collisions

AbstractThe jet energy scale, jet energy resolution, and their systematic uncertainties are measured for jets reconstructed with the ATLAS detector in 2012 using proton–proton data produced at a centre-of-mass energy of 8 TeV with an integrated luminosity of $$20 \, \hbox {fb}^{-1}$$ 20 fb - 1 . Jets are reconstructed from clusters of energy depositions in the ATLAS calorimeters using the anti-$$k_t$$ k t algorithm. A jet calibration scheme is applied in multiple steps, each addressing specific effects including mitigation of contributions from additional proton–proton collisions, loss of energy in dead material, calorimeter non-compensation, angular biases and other global jet effects. The final calibration step uses several in situ techniques and corrects for residual effects not captured by the initial calibration. These analyses measure both the jet energy scale and resolution by exploiting the transverse momentum balance in $$\gamma $$ γ  + jet, Z + jet, dijet, and multijet events. A statistical combination of these measurements is performed. In the central detector region, the derived calibration has a precision better than 1% for jets with transverse momentum $$150 \, \hbox {GeV} < p_{{\mathrm {T}}}<$$ 150 GeV < p T < 1500 GeV, and the relative energy resolution is $$(8.4\pm 0.6)\%$$ ( 8.4 ± 0.6 ) % for $$p_{{\mathrm {T}}}= 100 \, \hbox {GeV}$$ p T = 100 GeV and $$(23\pm 2)\%$$ ( 23 ± 2 ) % for $$p_{{\mathrm {T}}}= 20 \, \hbox {GeV}$$ p T = 20 GeV . The calibration scheme for jets with radius parameter $$R=1.0$$ R = 1.0 , for which jets receive a dedicated calibration of the jet mass, is also discussed.

scholarly journals Search for new phenomena in photon+jet events collected in proton–proton collisions at s=8 TeV with the ATLAS detector

2014 ◽  
Vol 728 ◽  
pp. 562-578 ◽  
Author(s):  
G. Aad ◽  
T. Abajyan ◽  
B. Abbott ◽  
J. Abdallah ◽  
S. Abdel Khalek ◽  
...  
Keyword(s):  
Atlas Detector ◽  
Proton Proton ◽  
Proton Collisions ◽  
New Phenomena ◽  
Proton Proton Collisions
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