A flexible and efficient approach for missing transverse momentum reconstruction
Missing transverse momentum is a crucial observable for physics at hadron colliders, being the only constraint on the kinematics of "invisible" objects such as neutrinos and hypothetical dark matter particles. Computing missing transverse momentum at the highest possible precision, particu...
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| Veröffentlicht in: | arXiv.org 2023-08 |
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| creator | Balunas, William Cavalli, Donatella Khoo, Teng Jian Klein, Matthew Loch, Peter Piazza, Federica Pizio, Caterina Resconi, Silvia Schaefer, Douglas Smith, Russell Williams, Sarah |
| description | Missing transverse momentum is a crucial observable for physics at hadron colliders, being the only constraint on the kinematics of "invisible" objects such as neutrinos and hypothetical dark matter particles. Computing missing transverse momentum at the highest possible precision, particularly in experiments at the energy frontier, can be a challenging procedure due to ambiguities in the distribution of energy and momentum between many reconstructed particle candidates. This paper describes a novel solution for efficiently encoding information required for the computation of missing transverse momentum given arbitrary selection criteria for the constituent reconstructed objects. Pileup suppression using information from both the calorimeter and the inner detector is an integral component of the reconstruction procedure. Energy calibration and systematic variations are naturally supported. Following this strategy, the ATLAS Collaboration has been able to optimise the use of missing transverse momentum in diverse analyses throughout Runs 2 and 3 of the Large Hadron Collider and for future analyses. |
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| language | eng |
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| source | Free E- Journals |
| subjects | Dark matter Energy distribution Kinematics Large Hadron Collider Neutrinos Reconstruction Transverse momentum |
| title | A flexible and efficient approach for missing transverse momentum reconstruction |
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