Semivisible Jets Workshop

5 Jul 2022, 08:30 → 7 Jul 2022, 18:00 Europe/Zurich

HCI J 3 (ETH Honggerberg)

There are a variety of interesting theoretical models that predict the signature known as Semivisible Jets. These are jets of hidden particles of which only a fraction decay visibly. Many of these models provide an elegant solution to open questions concerning the origin of dark matter and/or the problem of the apparent unnaturalness of the Standard Model. Due to the challenges of their experimental signatures, these classes of models are underdeveloped and poorly explored. Recent developments in reconstruction and identification techniques made it possible to probe such models at the Large Hadron Collider experiments.
This Workshop intends to foster the collaboration of the experimental and theory communities to establish a set of realistic benchmark models that will drive future search strategies. Theorists and experimentalists will work together in the period leading to the Workshop to focus on potentially interesting models. The outcome of these feasibility studies will inform and guide the workshop discussion. The Workshop will also feature talks from experts in Monte Carlo generators, QCD-related jet variables, and machine learning tools.

The outcome of the workshop studies and discussions will be summarised in a white paper.

The Workshop will be in hybrid mode: at the Hönggerberg campus of ETH Zürich and online via zoom:

Zoom link 

Mattermost team: SVJCommunity

 

Invited talks

• Kathryn Zurek: "Theory of Hidden Sector Dark Matter"
• Huegues Beauchesne : "Phenomenology of Hidden Sector Dark Matter"
• Torbjorn Sjostrand: "Hidden Valleys in Phythia"
• Simon Plaetzer: "Hidden Valleys in Herwig"
• Suchita Kulkarni: "Dark Showers - Snowmass paper"
• Thea Aarrestad: "Machine Learning Applications: an experimental perspective"
• Barry Dillon: "Machine Learning Applications: a theoretical perspective"
• Kevin Pedro: "Semivisible Jets at CMS"
• Sukanya Sinha: "Semivisible Jets at ATLAS" 
• Frederic Dryer: "Jet Substructure Overview"
• Alejandro Gomez Espinoza: "Jets at CMS"
• Matt Le Blanc: "Jets at ATLAS"

 

The Swiss National Science Foundation kindly supports the event. 

Tuesday 5 July

09:00 → 10:30 Registration + Welcome coffee

10:30 → 12:15 Jet Reconstruction and Identification

Chairs: Suchita Kulkarni (in-person), Marcella Bona (on-line)

Speakers: Alejandro Gomez Espinosa (ETH Zurich (CH)), Frederic Dryer, Matt LeBlanc (CERN)

Recording

12:15 → 14:00 Lunch

14:00 → 16:15 Simulation Tools and Data Analysis strategy

Chairs: Alison Elliot (in person), Tim Cohen (on line)

Mattermost channels: SimulationTools, SVJDataAnalyses

Speakers: Kevin Pedro (Fermi National Accelerator Lab. (US)), Simon Platzer (University of Graz (AT)), Sukanya Sinha (University of Witwatersrand), Torbjorn Sjostrand (Lund University (SE))

Recording

16:15 → 16:45 Coffee break

16:45 → 18:30 Theory and Phenomenology: Status of the art

Chairs: Annapaola de Cosa (in person), Matt Strassler (on line)

Mattermost channels: SVJTheory

Speakers: Hugues Beauchesne, Kathryn Zurek (Caltech)

Zoom recording

18:30 → 20:30 Welcome Apero - Apero Riche at the Alumni Lounge

Wednesday 6 July

09:00 → 10:30 Tools and Data Analysis strategy - Machine Learning

Chairs: Matt LeBlanc (in person), Giovanni Grilli di Cortona (on line)

Mattermost Channel: MLtools

Speakers: Dr Barry Dillon (University of Heidelberg), Thea Aarrestad (ETH Zurich (CH))

Zoom recording

10:30 → 11:00 Coffee break

11:00 → 12:45 Workshop Studies on Benchmarks and Strategies: Jet Substructures

Chairs: Aran Garcia-Bellido (in person), Simon Plätzer (on line)

Mattermost channel: WG2 - Jet substructure

Speakers: Cari Cesarotti (Harvard University), Elena Busch (Columbia University (US)), Nishita Desai (Tata Institute of Fundamental Research), Thomas Klijnsma (Fermi National Accelerator Lab. (US))

0706_svjworkshop_f1.pdf

Recording

12:45 → 14:00 Lunch

14:00 → 15:45 Workshop Studies on Benchmarks and Strategies: All Hadronic Final States

Chairs: Bingxuan Liu (in person), Li, Lingfeng (on line)

Mattermost channel: WG1 - All hadronic

Speakers: Adrian Carmona (CERN), Alison Elliot (Science and Technology Facilities Council STFC (GB)), Christiane Scherb (Universität Mainz), Elias Bernreuther (Fermilab), Fatemeh Elahi, Kevin Pedro (Fermi National Accelerator Lab. (US)), Nukulsinh Parmar (University of Rochester (US)), Pedro Klaus Schwaller (Mainz University)

Recording

rinv_parameters.pdf

svj-pheno-param.pdf

svj wg1 jul 6 2022.pdf

SVJ Workshop WG1: Open Questions

15:45 → 16:15 Coffee break

16:15 → 18:00 Workshop Studies on Benchmarks and Strategies: Long-lived and Alternative Signatures

Chairs: Gordon Watts, Nishita Desai

Mattermost channel: WG4 - SVJ with long-lived dark mesons

Speakers: Chi Lung Cheng (The Chinese University of Hong Kong (HK)), Cristiano Alpigiani (University of Washington, Seattle), Ennio Salvioni (Universita e INFN, Padova (IT)), Hsin-Chia Cheng, Ling Feng, Sara Nabili (University of Maryland (US)), Yi-Mu Chen (University of Maryland (US))

Recording

SVJ_Workshop_Zurich_06072022.pdf

WG4_Theory.pdf

18:00 → 20:00 Dinner at Bellavista Restaurant

Thursday 7 July

09:00 → 10:30 Workshop Studies on Benchmarks and Strategies: Heavy Flavour

Chairs: Kevin Pedro (in person), Hugues Beauchesne (on line)

Mattermost channel: WG3 - SVJ with heavy flavor

Speakers: Ammar Ellaboudy, Bingxuan Liu (Simon Fraser University (CA)), Daniel Stolarski (Carleton University), Florian Eble (ETH Zurich (CH)), Simon Knapen (CERN)

Recording

SVJWorkshop_WG3_SVJ_heavy flavor.pdf

10:30 → 11:00 Coffee break

11:00 → 12:30 Workshop Studies on Benchmarks and Strategies: Final States with Leptons

Chairs: Benedikt Maier (in person), Ennio Salvioni (on line)

Mattermost channel: WG5 - SVJ with leptons

Speakers: Cesare Tiziano Cazzaniga (ETH Zurich (CH)), Giovanni Grilli Di Cortona (INFN - Frascati National Laboratory), Hugues Beauchesne (Ben-Gurion University of the Negev)

Recording

semivisible workshop-WG5.pdf

12:30 → 13:00 Closing Remarks

Conveners: Annapaola De Cosa (ETH Zurich (CH)), Marcella Bona (Queen Mary University of London (UK)), Matthew Strassler (Harvard University), Suchita Kulkarni (University of Graz), Tim Cohen (CERN)