Standard Model at the LHC 2022

11 Apr 2022, 11:00 → 14 Apr 2022, 18:45 Europe/Zurich

500/1-001 - Main Auditorium (CERN)

Alexander Yohei Huss (CERN), Tancredi Carli (CERN)

The SM@LHC workshop deals with the latest developments as well as future prospects in Standard Model phenomenology at the LHC. The emphasis lies in bringing together experimentalists and theorists to stimulate discussions on the most interesting and topical aspects across the various fields. The main topics include Electroweak, Higgs, QCD, Top, Flavour Physics and EFT.

Given the present COVID-19 situation with most restrictions lifted, the meeting is planned in hybrid-mode (in person and on-line attendance).

Young Scientist Presentation award:

• Johannes Michel on "The Drell-Yan 𝑞𝑇 Spectrum and Its Uncertainty at N3LL′"
• Bianca Sofia Pinolini on "Observation of VBS production in opposite-sign WW events at CMS"

Mattermost:  mattermost.web.cern.ch/smlhc2022

Wi-Fi at CERN:  network connection

Slide upload: If the upload button does not show up directly on the timetable view, go to the contribution itself (either click on “view contribution details” button on the top right when you click on your talk, or via https://indico.cern.ch/event/1101427/contributions/). If you still experience issues with uploading slides, please send them to us and we can take care of the upload for you.

Previous editions:  Online (SM@LHC 2021), Zurich (SM@LHC 2019), Berlin (SM@LHC 2018), Amsterdam (SM@LHC 2017), Pittsburgh (SM@LHC 2016), Florence (SM@LHC 2015), Madrid (SM@LHC 2014), Freiburg (SM@LHC 2013), Copenhagen (SM@LHC 2012), Durham (SM@LHC 2011) and London (SM@LHC 2009).

International Organizing Committee: Juan Alcaraz Maestre, Jeppe Andersen, Mario Campanelli, Tancredi Carli, Vitaliano Ciulli, Ayres Freitas, Stefan Höche, Eric Laenen, Katharina Müller, Aleandro Nisati
 

 

1Booking form SM LHCC 04.22.docx

smlhc2022_poster.pdf

Monday, 11 April

Registration

1 Welcome

Speakers: Alexander Yohei Huss (CERN), Tancredi Carli (CERN)

Recording

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welcome.pdf

QCD

Conveners: Francesco Giuli (Brandeis University (US)), Lorenzo Sestini (Universita e INFN, Padova (IT))

2 Jet substructure variables in quark and gluon jets

Speaker: Mateusz Jacek Goncerz (Polish Academy of Sciences (PL))

Recording

SM_jet_variables_final.pdf

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3 inclusive and di-jet production at 13 TeV

Speakers: Daniel Savoiu (KIT), Daniel Savoiu (KIT - Karlsruhe Institute of Technology (DE))

DSavoiu_SM@LHC_2022-04-11.pdf

Recording

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4 PDF4LHC21 benchmarking

Speakers: Joey Huston (Department of Physics and Astronomy), Joey Huston (Michigan State University (US))

huston_PDF4LHC21_SM@LHC.pdf

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5 PDF fits @ LHC

Speaker: Eimear Isobel Conroy (University of Oxford (GB))

Recording

SMatLHC_final.pdf

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13:45 Coffee break

Electroweak

Conveners: Paolo Azzurri (Universita & INFN Pisa (IT)), William Barter (Imperial College (GB))

6 High precision observables in DY

Speaker: Ayres Freitas

Recording

smlhc22_freitas.pdf

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7 Mixed EW-QCD corrections to W/Z production

Speakers: Alessandro Vicini (University of Milano), Alessandro Vicini (Università degli Studi e INFN Milano (IT))

Recording

Vicini-QCDEW-DY.pdf

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8 Recent results on W mass and branching fraction

Speaker: Menglin Xu (University of Warwick (GB))

Recording

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W_SM_LHC.pdf

9 Z invisible BR/DY AFB/forward Z and mass dependent pt

Speaker: Oz Amram (Johns Hopkins University (US))

Recording

SM_atLHC.pdf

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15:30 Coffee break

EFT

Conveners: Hannes Mildner (University of Sheffield (GB)), Jordy de Vries

10 Towards a global EFT analysis (LHC EFT)

Speaker: Kristin Lohwasser (University of Sheffield (GB))

Recording

SMatLHC_globalEFT_Lohwasser.pdf

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11 Global interpretation of Higgs, diboson, and top quark production & decay

Speaker: Maeve Madigan

Recording

SMatLHC_MaeveMadigan.pdf

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12 CP-odd flavour-invariants in SMEFT

Speaker: Quentin Bonnefoy (DESY)

Bonnefoy_SM@LHC.pdf

Recording

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17:15 break

QCD/EW

Conveners: Francesco Giuli (Brandeis University (US)), Paolo Azzurri (Universita & INFN Pisa (IT))

13 Photons and Jets

Speaker: Marius Höfer (LMU Munich)

Photons_SMatLHC.pdf

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14 V+light jets

Speaker: Jelena Mijuskovic (University of Montenegro (ME))

SM@LHC2022_JMijuskovic.pdf

15 EW corrections in PDFs

Speaker: Christopher Schwan (Universität Würzburg)

Recording

talk-schwan.pdf

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16 AFB vs AW - impact on PDFs, SM parameters and BSM searches

Speakers: Juri Fiaschi (University of Southampton), Juri Fiaschi (Westfälische Wilhelms-Universität Münster)

Recording

SM_LHC_AFBvsAW.pdf

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19:00 Reception

Tuesday, 12 April

Higgs

Conveners: Karsten Koeneke (Albert Ludwigs Universitaet Freiburg (DE)), Maria Cepeda (CIEMAT)

17 Higgs differential cross sections

Speaker: Marius Wiesemann (Max Planck Society (DE))

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Wiesemann_SM@LHC_2022.pdf

18 State of the art of SM Higgs measurements

Speaker: Timothy Paul Scanlon (UCL)

higgs_sm2022_120422.pdf

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19 VBF/VBS observations/limitations

Speakers: Matteo Magherini (università degli studi di Perugia), Matteo Magherini (Universita e INFN, Perugia (IT))

VBF_VBS_SM@LHC_definitive.pdf

13:45 Coffee break

Top

Conveners: Jose Enrique Palencia Cortezon (Universidad de Oviedo (ES)), Malgorzata Maria Worek (Rheinisch Westfaelische Tech. Hoch. (DE)), Maria Moreno Llacer (Univ. of Valencia and CSIC (ES))

20 On the modeling uncertainties of ttW multi-lepton signatures

Speakers: Fernando Febres Cordero (Florida State University), Fernando Febres Cordero (Florida State University)

Recording

SMatLHC_Apr_2022.pdf

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21 Most recent single top measurements at the LHC

Speaker: Lidia Dell'Asta (Università degli Studi e INFN Milano (IT))

Lidia_SM@LHC_202204-final.pdf

Recording

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22 Most recent ttV measurements at the LHC

Speaker: Tu Thong Tran (Universite Catholique de Louvain (UCL) (BE))

Recording

ttV_SM@LHC.pdf

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15:30 Coffee break

Heavy Flavour

Conveners: Alexis Pompili (Universita e INFN, Bari (IT)), Marzia Bordone (CERN)

23 Lepton flavour universality tests

Speaker: Florian Reiss (University of Manchester (GB))

2022_04_12_LFU_FReiss.pdf

Recording

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24 rare heavy flavour decays

Speaker: Caterina Aruta (Universita e INFN, Bari (IT))

RareHFdecays_SM@LHC2022_Aruta.pdf

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25 Predictions for R(D*), BF, angular observables

Speaker: Peter Stangl (University of Bern)

Recording

Stangl_22-04_CERN.pdf

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17:15 break

YSF

Conveners: Ayres Freitas, Juan Alcaraz Maestre (Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT, Madrid))

26 Mixed QCD-electroweak corrections to Higgs plus jet production at the LHC

The detailed study of the Higgs boson is one of the main tasks of contemporary particle physics. Gluon fusion, the main production channel of Higgs bosons at the LHC, has been successfully modelled in QCD up to $\text{N}^3\text{LO}$. To fully exploit this unprecedent theoretical effort, sub-leading contributions, such as electroweak corrections, must be investigated. I will present the analytic calculations of the gluon- and quark-induced Higgs plus jet amplitudes in mixed QCD-electroweak corrections mediated by light quarks up to order $v \alpha^2 \alpha_S^{3/2}$.

Speaker: Mr Marco Bonetti (RWTH University)

main_4.pdf

Recording

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27 Search for non-resonant Higgs bosons pairs production in the bbtautau final state at CMS

The most recent results on non-resonant Higgs bosons pairs production in the final state with two bottom quarks and two tau leptons will be presented. This final state has a sizeable branching fraction (7.3%) and the analysis benefit also from precise tau identification algorithms developed within the CMS collaboration. The analysis targets the gluon-gluon fusion and vector boson fusion production modes. 95% CL limits are set on SM production cross section, Higgs boson trilinear self-coupling and coupling of two Higgs bosons to two vector bosons. The sensitivity achieved by this search, performed with the full Run2 data set, is five times better than the one published using the LHC 2016 data set only. The improvement is determined by the larger statistics, the improved trigger strategy and by the use of Deep Neural Networks to perform objects selection and signal discrimination.

Speaker: Jaime Leon Holgado (Centro de Investigaciones Energéticas Medioambientales y Tec. (ES))

CMS_HHbbtt_SMLHC22_JLH.pdf

Recording

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28 Observation of VBS production in opposite-sign WW events at CMS

The observation of the electroweak production of a W+W− pair in association with two jets, with both W bosons decaying leptonically, is reported. The data sample corresponds to an integrated luminosity of 138fb−1 of proton-proton collisions at s = 13 TeV, collected by the CMS detector at the CERN LHC. A signal is observed (expected) with a significance of 5.6 (5.2) standard deviations with respect to the background-only hypothesis.

Speaker: Bianca Sofia Pinolini

Observation of VBS production in opposite-sign WW events @ CMS.pdf

Recording

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29 Flavour Tagging with Jet Substructure

Jets are collimated bunches of hadrons ubiquitous in the detectors at the LHC. Studying the internal structure of these objects is essential to identify the original objects that originate the jet and to understand the underlying physical process. An important category of Jet Substructure (JSS) observables are Jet Angularities which have been recently calculated in resummed perturbation theory [1, 2] and measured in the Z+Jet and dijet processes at the LHC.

In this talk I will discuss how Jet Angularities can be exploited to define an infrared and collinear safe jet flavour tagger considering a recently proposed [3] application in the context of the Z+Jet process. In particular, by tagging the final state jet as quark-initiated we have been able to enhance the initial-state gluon contribution. I discuss new resummed theoretical predictions for the transverse momentum distributions of events selected by the tagger which would be potentially interesting to probe the gluonic degrees of freedom of the colliding protons.

Speaker: Simone Caletti

Caletti_SMatLHC2022_YSF.pdf

Recording

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30 Differential cross-sections for $t\bar{t}j + X$ production at the LHC

The fundamental SM parameter of the top quark mass can be measured with unprecedented accuracy at LHC due to the large production cross section for top quark pairs, and top quark pairs in association with at least one hard jet. The extraction of this quantity can be achieved using the $\rho_s$ distribution, an observable related to the invariant mass of the t-tbar + jet system. Thereby, the top-quark mass extraction can be performed using different mass renormalisation schemes. We present theory predictions useful for this extraction in the on-shell, the MSbar and, for the first time,the MSR scheme.
In view of the high experimental accuracy, which is reached in measuring
the relevant production cross sections at the LHC, the control over the associated
theory uncertainties becomes increasingly important. To this end we present a study of the effect of varying theoretical input parameters in the calculation of t-tbar + jet + X NLO differential cross sections. We investigate the effect of static and dynamical renormalization and factorization scale definitions and different PDF sets as well as the influence of the $R$ parameter in the jet reconstruction procedure. We make public a set of reference fiducial cross-sections for different cuts, that we expect to be very useful for the forthcoming LHC experimental analyses at $\sqrt{s}$ = 13 TeV and higher center-of-mass energies.

Speaker: Katharina Voss (University of Siegen (DE))

Recording

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YSF_SMatLHC_ttj_KVoss.pdf

31 The Drell-Yan $q_T$ Spectrum and Its Uncertainty at N$^3$LL$'$

We present state-of-the-art SCETlib predictions for the $W$ and $Z/\gamma^*$ transverse-momentum ($q_T$) distributions at the LHC at complete three-loop order in resummed perturbation theory (N$^3$LL$'$) and matched to available fixed order. We pay particular attention to the estimation of theory uncertainties via profile scale variations in such a way that perturbative uncertainties due to PDF evolution, perturbative resummation uncertainties, and nonperturbative uncertainties for $q_T \to 0$ are cleanly disentangled, and compare our predictions to high-precision measurements by the ATLAS and CMS experiments. The speed and versatility of our resummed calculation also allow us to study the dependence on the strong coupling, the PDFs, and their parametric uncertainties at this order. We find intriguing evidence that the normalized ATLAS and CMS $Z$ $q_T$ spectra may prefer a lower strong coupling than the PDG value.

Speaker: Johannes Michel (MIT CTP)

Michel_SM_at_LHC_2022-04-12.pdf

Recording

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32 A search for the dimuon decay of the Standard Model Higgs boson in pp collisions at 13 TeV with the ATLAS Detector

A search for the dimuon decay of the Standard Model (SM) Higgs boson is performed using data corresponding to an integrated luminosity of 139/fb collected with the ATLAS detector in Run2 pp collisions at 13 TeV at the Large Hadron Collider. The observed (expected) significance over the background-only hypothesis for a Higgs boson with a mass of 125.09 GeV is 2.0σ (1.7σ). The observed upper limit on the cross section times branching ratio is 2.2 times the SM prediction at 95% confidence level, while the expected limit on a H → μμ signal assuming the absence (presence) of a SM signal is 1.1 (2.0). The best-fit value of the signal strength parameter, defined as the ratio of the observed signal yield to the one expected in the SM, is μ=1.2 ± 0.6.

Speakers: Ye Chen (University of Science and Technology of China (CN)), Ye Chen (Hefei University of Science and Technology of China)

SMLHC_Talk_2022.pdf

Wednesday, 13 April

Top

Conveners: Jose Enrique Palencia Cortezon (Universidad de Oviedo (ES)), Malgorzata Maria Worek (Rheinisch Westfaelische Tech. Hoch. (DE)), Maria Moreno Llacer (Univ. of Valencia and CSIC (ES))

33 B-hadrons in top-quark pair production at NNLO QCD

Speaker: Michal Wiktor Czakon (Rheinisch Westfaelische Tech. Hoch. (DE))

Recording

talk.pdf

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34 Most recent FCNC searches at the LHC

Speaker: Rui Zhang (University of Wisconsin Madison (US))

Recording

SMLHC2022ZhangRui.pdf

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35 Most recent differential measurements at the LHC

Speaker: Oliver Majersky (Comenius University (SK))

Recording

SMLHC22_top_differential_measurements_Majersky.pdf

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13:45 Coffee break

QCD

Conveners: Anna Katarzyna Kulesza (Westfaelische Wilhelms-Universitaet Muenster (DE)), Anna Kulesza (University of Muenster), Francesco Giuli (Brandeis University (US))

36 Status of the (N)NNLO calculations

Speaker: Rene Poncelet (Cambridge University)

poncelet_statusNNLO.pdf

Recording

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37 Parton showers and matching

Speaker: Stefan Prestel

Recording

talk20220413.pdf

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38 Linear power corrections and small-qT resummation

Speakers: Luca Rottoli, Luca Rottoli (University of Zurich (CH))

Recording

rottoli_talk_SM@LHC_2022.pdf

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15:30 Coffee break

Top/HF/EFT

Convener: Jordy de Vries

39 New physics and EFT results from flavour and top physics

Speakers: Claudia Cornella, Claudia Cornella (Universität Zürich), Claudia Cornella

Cornella_SMatLHC.pdf

Recording

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40 LHC observables vs. low-energy precision

Speakers: Martin Gonzalez-Alonso (IPN Lyon), Martin Gonzalez-Alonso (Universidad de Valencia), Martin Gonzalez-Alonso (CERN), Martin Gonzalez-Alonso

MGA.pdf

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41 Experimental results in CKM and Hadron Spectroscopy areas

Speaker: Zehua Xu (LPC Clermont CNRS/IN2P3 (FR))

Recording

SM_LHC_Zehua.pdf

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42 Latest Heavy Flavour fragmentation results

Speaker: Jhovanny Andres Mejia Guisao (Universidad de Antioquia (CO))

Recording

SMLHC2022_JhovannyMejia.pdf

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17:15 break

QCD/EW/HF

Conveners: Francesco Giuli (Brandeis University (US)), Paolo Azzurri (Universita & INFN Pisa (IT))

43 Small-x resummation and differential cross sections in heavy-quark pair production

Speaker: Federico Silvetti (INFN - National Institute for Nuclear Physics)

Recording

small-xresinHQpairProduction_Silvetti.pdf

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44 Inclusion of V+HF data in modern PDF fits

Speakers: Maria Vittoria Garzelli, Maria Vittoria Garzelli (INFN, Italia & Universidad de Granada, Espana), Maria Vittoria Garzelli, Maria Vittoria Garzelli

Recording

semsmatlhc.pdf

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45 V+HF

Speakers: Joey Huston (Department of Physics and Astronomy), Joey Huston (Michigan State University (US)), Joey Huston UNKNOWN

huston_SM@LHC22.pdf

huston_SM@LHC22.pptx

Recording

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46 High-precision measurement of the W boson mass with the CDF II detector

Speaker: Chris Hays (University of Oxford (GB))

Recording

SMLHC13Apr.pdf

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Thursday, 14 April

47 Announcement

Speakers: Alexander Yohei Huss (CERN), Tancredi Carli (CERN)

Recording

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YSF_prize.pdf

Electroweak

Conveners: Paolo Azzurri (Universita & INFN Pisa (IT)), Stefan Dittmaier (Albert Ludwigs Universitaet Freiburg (DE))

48 Precision calculations for multiboson production and VBS

Speaker: Mathieu Pellen (University of Freiburg)

PELLEN_SMatLHC_2022.pdf

Recording

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49 Recent results on vector boson fusion and diboson production

Speaker: Emmanuel Sauvan (LAPP (IN2P3/CNRS))

Recording

VBS_dibosons_exp_SMatLHC2022.pdf

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50 Recent results on Vector boson scattering and triboson production

Speaker: Roberto Covarelli (University/INFN Torino (IT))

Recording

SMLHC22_vbs.pdf

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51 Predictions for polarized W/Z production

Speakers: Giovanni Pelliccioli (Würzburg University), Giovanni Pelliccioli (Würzburg University)

gp_sm_at_lhc_22.pdf

Recording

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13:45 Coffee break

Higgs

Conveners: Karsten Koeneke (Albert Ludwigs Universitaet Freiburg (DE)), Maria Cepeda (CIEMAT)

52 Future of Higgs

Speaker: Laura Reina (Florida State University (US))

Recording

SM@LHC22.pdf

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53 Extracting kappa_lambda and c_2V from all angles

Speaker: Christoph Peter Englert (University of Glasgow (GB))

2022_LHCSM.pdf

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54 HH (SM+BSM) and H BSM

Speaker: Teng Jian Khoo (Humboldt University of Berlin (DE))

Recording

SMatLHC22_Khoo_HH_BSMH.pdf

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15:30 Coffee break

Higgs/Top/HF

Conveners: Malgorzata Maria Worek (Rheinisch Westfaelische Tech. Hoch. (DE)), Maria Moreno Llacer (Univ. of Valencia and CSIC (ES)), Marzia Bordone (CERN)

55 ttH(H->bb): signal and irreducible background from the off-shell perspective

Speaker: Giuseppe Bevilacqua (MTA-DE Particle Physics Research Group, Debrecen)

Recording

SM@LHC2022_Bevilacqua.pdf

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56 Understanding the Quark Yukawa interaction; latest results and prospects

Speakers: Kajari Mazumdar (Experimental High Energy Physics Group, Tata Institute of Fundamental Research), Kajari Mazumdar (Tata Inst. of Fundamental Research (IN))

Recording

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YukawaKM.pdf

57 New Lattice results

Speaker: Christine Davies

Recording

SM-LHC22.pdf

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17:15 break

Higgs/EW/EFT

Conveners: Hannes Mildner (University of Sheffield (GB)), Maria Cepeda (CIEMAT)

58 EW processes and EW fits

Speaker: Ilaria Brivio (University of Heidelberg)

Recording

slides_SM@LHC2022.pdf

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59 Measurement of Higgs CP properties and their EFT interpretations

Speaker: Zhijun Liang (Chinese Academy of Sciences (CN))

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SMatLHC_zhijunv9.pdf

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60 Combined Higgs Production and decay with a focus on EFT interpretations

Speaker: Matthew Knight (Imperial College London)

Recording

SMatLHC_2022_Higgs_combination_and_EFT.pdf

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61 global status of ew precision calculations

Speaker: Marek Schoenherr (University of Durham)

MarekSchoenherr_EWglobalView.pdf

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