Optimizing pixel tracklet searches for shorter lifetimes
arXiv:2211.06949 · doi:10.1007/JHEP03(2023)040
Abstract
Pixel tracklets, disappearing tracks reconstructed with only pixel hits, have proven to be a promising technique in LHC analyses to search for dark matter candidates at the LHC that belong to a nearly-degenerate electroweak multiplet. However, a Pseudo-Dirac electroweak doublet fermion, arguably the most interesting such possibility, has a shorter lifetime and therefore existing tracklet searches are less sensitive in this case. We assess the performance of a tracklet search optimized for shorter lifetimes by requiring only three pixel hits for the tracklet reconstruction, and by demanding an accompanying soft track for suppressing backgrounds. We estimate how far the sensitivity of existing searches can be extended into the region of parameter space with this optimized search.
arXiv comment27 pages, 12 figures; v2: Minor changes. Matches published version
References in corpus (21)
- The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
- The anti-k_t jet clustering algorithm
- An Introduction to PYTHIA 8.2
- FastJet user manual
- DELPHES 3, A modular framework for fast simulation of a generic collider experiment
- Parton distributions for the LHC Run II
- UFO - The Universal FeynRules Output
- Top++: a program for the calculation of the top-pair cross-section at hadron colliders
- Inelastic Dark Matter
- Precision predictions for electroweak superpartner production at hadron colliders with Resummino
- Matching Tree-Level Matrix Elements with Interleaved Showers
- In Wino Veritas? Indirect Searches Shed Light on Neutralino Dark Matter
- Gaugino production in proton-proton collisions at a center-of-mass energy of 8 TeV
- Wino Dark Matter Under Siege
- A Non-Standard String/SUSY Scenario and its Phenomenological Implications
- Massive Doublet Leptons
- Precise predictions for V+jets dark matter backgrounds
- A superspace module for the FeynRules package
- Higgsino Dark Matter or Not: Role of Disappearing Track Searches at the LHC and Future Colliders
- Last Electroweak WIMP Standing: Pseudo-Dirac Higgsino Status and Compact Stars as Future Probes
- Phenomenological Aspects of Supersymmetric Standard Models without Grand Unification