Average event properties from LHC to FCC-hh

Brooks, Helen

doi:10.1140/epjc/s10052-018-6460-2

Cited by 4 publications

(2 citation statements)

References 90 publications

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“…While we neglect their impact, we do believe it is possible to reliably parametrize UE, particularly at larger √ s, as demonstrated in ref. [228]. A dedicated investigation into the impact of UE on jet vetoes applied to new physics searches is deferred to future studies.…”

Section: Jhep06(2019)049mentioning

confidence: 99%

Heavy neutrinos with dynamic jet vetoes: multilepton searches at $$ \sqrt{s}=14 $$, 27, and 100 TeV

Pascoli

Ruiz

Weiland

2019

J. High Energ. Phys.

102

156

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Heavy neutrinos (N) remain one of most promising explanations for the origin of neutrinos' tiny masses and large mixing angles. In light of broad advances in understanding and modeling of hadron collisions at large momentum transfers, we revisit the long-standard search strategy for heavy N decaying to multiple charged leptons (), pp → N X → 3 νX. For electroweak and TeV-scale N , we propose a qualitatively new collider analysis premised on a dynamic jet veto and discriminating, on an event-by-event basis, according to the relative amount of hadronic and leptonic activity. We report that the sensitivity to heavy neutrinos at the CERN Large Hadron Collider (LHC) can be improved by roughly an order of magnitude at both L = 300 fb −1 and 3 ab −1. At √ s = 14 TeV with L = 3 ab −1 , we find active-sterile mixing as small as |V N | 2 = 10 −2 (10 −3) [5 × 10 −4 ] can be probed at 95% CL for heavy Dirac neutrinos masses m N 1200 (300) [200] GeV, well beyond the present |V N | 2 10 −3 − 10 −1 constraints for such heavy states set by indirect searches and precision measurements. The improvement holds also for Majorana N , and is largely independent of whether charged lepton flavor is conserved or violated. The analysis, built almost entirely from inclusive, transverse observables, is designed to be robust across increasing collider energies, and hence serves as a basis for searches at future colliders: with L = 15 ab −1 at √ s = 27 TeV, one can probe mixing below |V N | 2 = 10 −2 (10 −3) [2 × 10 −4 ] for m N 3500 (700) [200] GeV. At a hypothetical 100 TeV pp collider with L = 30 ab −1 , one can probe mixing down to 9 × 10 −5 for m N 200 GeV, below 10 −3 for m N 4 TeV, and below 10 −2 for m N 15 TeV. We anticipate these results can be further improved with detector-specific tuning and application of multi-variant / machines learning techniques. To facilitate such investigations, we make publicly available Monte Carlo libraries needed for the precision computations/simulations used in our study.

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Section: Jhep06(2019)049mentioning

confidence: 99%

Heavy neutrinos with dynamic jet vetoes: multilepton searches at $$ \sqrt{s}=14 $$, 27, and 100 TeV

Pascoli

Ruiz

Weiland

2019

J. High Energ. Phys.

102

156

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“…These values were used to compare our results with those reported by the ALICE experiment [9], and a different set of cuts were taken to investigate other energies. PYTHIA Monash 2013 was used to study F-B multiplicity correlations since it is one of the last tunes which incorporates some of the latest results of the LHC and has been used to predict p+p results at √ s = 100 TeV, indicating that up to 27 TeV, the results are quite similar with other MC event generators [10,11].…”

Section: Forward-backward Multiplicity Correlations With Pythiamentioning

confidence: 99%

Extraction of multiple parton interactions and color reconnection from forward–backward multiplicity correlations

2019

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Forward-backward multiplicity correlations have been studied in electron-positron, protonproton and more recently in lead-lead collisions. For the proton-proton case, comparison of experimental results to different models reveals an incomplete understanding of the physical phenomenon associated with these correlations. In this work, we present a study of forwardbackward multiplicity correlations in proton-proton collisions using the PYTHIA event generator, at LHC energies. A detailed analysis is presented with and without weak decays, splitting data samples into soft and hard QCD processes, and comparing the computed correlations for short and long range pseudorapidity regions. Each of these regions is analyzed accounting for the effects of color reconnection and independent multiple parton interactions. We show that a combination of these effects is required to explain the latest measurements on proton-proton data. Furthermore, is shown that from measurements of multiplicity correlations is possible to extract the average number of multiple parton interactions in the event producing these correlations, and albeit model depending, to predict the strength of these correlations, not yet measured, for higher energy collisions. * ecuautle@nucleares.unam.mx

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Event-generator validation with MCPLOTS and LHC@home

Korneeva,

Karneyeu,

Skands

2024

Eur. Phys. J. Plus

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We document several recent updates to the MCPLOTS event-generator validation resource. The project is based on the RIVET analysis library and harnesses volunteer computing provided by LHC@home to generate high-statistics MC comparisons to data. Users interact with the resource via a simple website, http://mcplots.cern.ch/, which provides flexible options for requesting comparison plots and comprehensive statistical analyses on demand, all in a few clicks. The project has been structured to enable community-driven developments, and we discuss the computational back end, the web front end, and how to add new data analyses, generators, and tunes that would be accessible on the website for comparison.

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Average event properties from LHC to FCC-hh

Cited by 4 publications

References 90 publications

Heavy neutrinos with dynamic jet vetoes: multilepton searches at $$ \sqrt{s}=14 $$, 27, and 100 TeV

Heavy neutrinos with dynamic jet vetoes: multilepton searches at $$ \sqrt{s}=14 $$, 27, and 100 TeV

Extraction of multiple parton interactions and color reconnection from forward–backward multiplicity correlations

Event-generator validation with MCPLOTS and LHC@home

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