TY - JOUR
T1 - ATLAS strategy for primary vertex reconstruction during Run-2 of the LHC
AU - Borissov, G.
AU - Casper, D.
AU - Grimm, K.
AU - Pagan Griso, S.
AU - Egholm Pedersen, L.
AU - Prokofiev, K.
AU - Rudolph, M.
AU - Wharton, A.
N1 - Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2015
Y1 - 2015
N2 - The reconstruction of vertices corresponding to proton-proton collisions in ATLAS is an essential element of event reconstruction used in many performance studies and physics analyses. During Run-1 of the LHC, ATLAS has employed an iterative approach to vertex finding. In order to improve the flexibility of the algorithm and ensure continued performance for very high numbers of simultaneous collisions in Run-2 of the LHC and beyond, a new approach to seeding vertex finding has been developed inspired by image reconstruction techniques. This note provides a brief outline of how reconstructed tracks are used to create an image of likely vertex collisions in an event, describes the implementation in the ATLAS software, and presents some preliminary results of the performance of the algorithm in simulation approximating early Run-2 conditions.
AB - The reconstruction of vertices corresponding to proton-proton collisions in ATLAS is an essential element of event reconstruction used in many performance studies and physics analyses. During Run-1 of the LHC, ATLAS has employed an iterative approach to vertex finding. In order to improve the flexibility of the algorithm and ensure continued performance for very high numbers of simultaneous collisions in Run-2 of the LHC and beyond, a new approach to seeding vertex finding has been developed inspired by image reconstruction techniques. This note provides a brief outline of how reconstructed tracks are used to create an image of likely vertex collisions in an event, describes the implementation in the ATLAS software, and presents some preliminary results of the performance of the algorithm in simulation approximating early Run-2 conditions.
UR - http://www.scopus.com/inward/record.url?scp=84961901644&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84961901644&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/664/7/072041
DO - 10.1088/1742-6596/664/7/072041
M3 - Conference Article
AN - SCOPUS:84961901644
SN - 1742-6588
VL - 664
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 7
M1 - 072041
T2 - 21st International Conference on Computing in High Energy and Nuclear Physics, CHEP 2015
Y2 - 13 April 2015 through 17 April 2015
ER -