XI NExT PhD Workshop: Probing fundamental physics at colliders and beyond

28 Jun 2021, 09:15 → 2 Jul 2021, 16:30 Europe/London

Zoom

Andrea Banfi (University of Sussex), Daniel Litim (University of Sussex), Jonas Lindert (University of Sussex)

The XI NExT PhD Workshop will take place from 28 June to 2 July 2021. Unfortunately, it will not be possible to hold this event face-to-face, and the workshop will be held virtually using Zoom.

This workshop, designed specifically for early career researchers, is a compulsory event for the cohort of NExT PhD students who started in September 2020.

The workshop comprises 15 hours of lectures by world experts in particle physics on the most recent ideas to search for new physics at colliders and beyond.

Students will have the opportunity to present their own work through lightning talks and discussion sessions, where they will have the possibility to interact with the lecturers in a stimulating and supporting environment.

The workshop will also feature two sessions on careers advice, public engagement, and employer engagement.

Fees. Attendance is free of charge. 

Programme and topics

Lectures. The workshop aims at exposing early career researchers to a wide scope of topical developments in the search for new physics, including theoretical ideas, concepts, and tools, as well as advances through experiments and new search strategies at colliders and beyond. 

• Gravitational waves as new physics probes (Pedro Schwaller, University of Mainz)
• Precision physics for discovery (Giulia Zanderighi, MPI Munich)
• Effective field theories beyond colliders (Emmanuel Stamou, TU Dortmund)
• New strategies for discovery at the LHC (Josh McFayden, University of Sussex)
• From particle physics to quantum gravity (Astrid Eichhorn, University of Odense)

Student talks. PhD students are encouraged to discuss their research in dedicated sessions of 5-minute lightning talks. There will be prizes for the best talks!

SEPnet Employer Panel Sessions. The SEPnet employer panel sessions are aimed at raising awareness of career opportunities outside academia for physics doctorates. Panel representatives, all with physics or PhD backgrounds, will spend a few minutes outlining their background and their role, what their organisation does, what skills/knowledge they are looking for and why they might be interested in physicists. Each panel session will be followed by a Q&A session.  

Feedback. Participants are required to send feedback using the online feedback form provided in the workshop material.

Organisers

Andrea Banfi (Chair), Jonas Lindert, Daniel Litim

 

Sponsors: STFC and SEPnet

Feedback form

Reimbursement forms

• Reimbursement form for non-STFC SEPnet/NExT students
• Reimbursement form for STFC and self-supported students / non-UK bank account
• Reimbursement form for STFC and self-supported students / non-UK bank account
• Reimbursement form for STFC and self-supported students / UK bank account
• Reimbursement form for STFC and self-supported students / UK bank account

Monday, 28 June

09:15 → 09:30 Welcome / Announcements

09:30 → 11:00 New strategies for discovery at the LHC

Speaker: Josh McFayden (University of Sussex)

2021-06-28_NExT_LHCDiscoveries1_mcfayden.pdf

Recording - part 1

Recording - part 2

11:00 → 11:15 Short break

11:15 → 12:45 Precision physics for discovery

Speaker: Giulia Zanderighi (Max-Planck-Institut fur Physik (DE))

Next-Lecture1-2021.pdf

Recording

12:45 → 13:45 Social lunch

13:45 → 15:30 Long break

15:30 → 16:30 Student talks: Session 1

15:30 Matching parton shower and fixed order calculations in the Deductor framework

Matching fixed order calculations with parton showers enables us to predict jet observables over a wide kinematic range, combining the precision of the fixed order cross section at hand with the parton shower's abilty to resum logarithms in regions where a fixed order cross section would loose its predictive power.
In this lightning talk I would introduce the basic building blocks of the Deductor parton shower, and how the matching is done in it, working at the amplitude level.

Speaker: Aron Csaba Bodor (Deutsches Elektronen-Synchrotron DESY)

15:40 Machine learning for particle physics.

We are trying to investigate how to extract particles' properties, such as colour charge and spin, and use them to improve the jet clustering, as the standard models use only kinematics variables. At the moment, we are looking at two different events, $pp \rightarrow gZ \rightarrow b\bar{b}e{e}$ and $pp \rightarrow HZ \rightarrow b\bar{b}e{e}$, in order to find a way to use the differences between the two pairs of b-jets - in the second event they are colour connected, unlike in the first event - into a new clustering algorithm. We are exploiting Spectral Clustering, which is a machine learning algorithm which needs only few parameters to tune and give us more sense of what is happening while clustering particles.

Speaker: Giorgio Cerro (University of Southampton)

15:50 H1jet, a fast program to compute transverse momentum distributions

We present H1jet, a fast code that computes the total cross section and differential distribution in the transverse momentum of a colour singlet. In its current version, the program implements only leading-order 2 → 1 and 2 → 2 processes, but could be extended to higher orders. We discuss the processes implemented in H1jet, give detailed instructions on how to implement new processes, and perform comparisons to existing codes. This tool, mainly designed for theorists, can be fruitfully used to assess deviations of selected new physics models from the Standard Model behaviour, as well as to quickly obtain distributions of relevance for Standard Model phenomenology.

Speaker: Alexander Lind (University of Sussex)

H1jetLightningTalk.pdf

16:00 Jet Clustering Techniques for New Higgs Boson Searches in Hadronic Final States

We assess the performance of different jet-clustering algorithms, in the presence of different resolution parameters and reconstruction procedures, in resolving fully hadronic final states emerging from the chain decay of the discovered Higgs boson into pairs of new identical Higgs states, the latter in turn decaying into bottom antibottom quark pairs. We show that, at the LHC, to select a multi-jet final state and to construct the Higgs masses depend strongly on the jet-clustering algorithm as well as its settings and the choice of acceptance cuts. The aim is to indicate the optimal choice of the latter for establishing such a benchmark Beyond the SM (BSM) signal.

Speaker: Shubhani Jain (University of Southampton)

16:10 A type-independent 2HDM parameter scanner

Using the kappa formulation for the coupling strengths of the five higgses to quarks and W bosons we aim to construct a toolbox to work alongside MadGraph that will enable the user to scan over various variables including the titular kappas and calculate the cross-sections at each of these parameter points. In doing this we can highlight regions with large excess compared to the SM that would be a key area to search for the existence of any 2HDM model type. 2HDMC, HiggsBounds and HiggsSignals are used to verify that parameter points have not yet been excluded.

Speaker: Ciara Byers (University of Southampton)

16:20 Fermion mass hierarchies from vector-like families with an extended 2HDM and a possible explanation for the electron and muon anomalous magnetic moments

We study an extended 2 Higgs doublet model (2HDM) in which the Standard Model (SM) Yukawa interactions are forbidden due to a global U(1)' symmetry, but may arise via mixing with vectorlike families. In this model, the hierarchical structure of Yukawa couplings of quarks and leptons in the SM arises from the heavy masses of the fourth and fifth vectorlike families. Within this model, we consider various nonstandard contributions to the electron and muon anomalous magnetic moments. We first consider the W exchange at one-loop level, consistent with the μ → eγ constraint, and show that it yields a negligible contribution to both electron and muon anomalous magnetic moments. We then consider Higgs scalar exchange, together with vectorlike leptons, at one-loop level and show that it is possible to have nonstandard contributions to the electron and muon anomalous magnetic moments within the 1σ constraint of certain experiments. We present some benchmark points for both the muon and the electron anomalies, together with some numerical scans around these points, which indicate the mass regions of the Higgs scalars of the 2HDM in this scenario.

Speaker: Huchan Lee (The university of Southampton)

16:30 → 16:45 Short break

16:45 → 17:30 Discussion: Precision physics for discovery - New strategies for discovery at the LHC

Precision physics for discovery (Giulia Zanderighi)
New strategies for discovery at the LHC (Josh McFayden)

Speakers: Giulia Zanderighi (Max-Planck-Institut fur Physik (DE)), Josh McFayden (University of Sussex)

Tuesday, 29 June

09:15 → 09:30 Welcome / Announcements

09:30 → 11:00 Effective field theories beyond colliders

Speaker: Emmanuel Stamou (EPFL)

NExT_EFTs_beyond_colliders.pdf

Recording

11:00 → 11:10 Short break

11:10 → 12:00 Student talks: Session 2

11:10 Diluting SUSY flavour problem on the Landscape

We consider an explicit effective field theory example based on the Bousso-Polchinski framework with a large number N of hidden sectors contributing to supersymmetry breaking. Each contribution comes from four form quantized fluxes, multiplied by random couplings. The soft terms in the observable sector in this case become random variables, with mean values and standard deviations which are computable. We show that this setup naturally leads to a solution of the flavor problem in low-energy supersymmetry if N is sufficiently large. We investigate the consequences for flavor violating processes at low-energy and for dark matter.

Speaker: Priyanka Lamba (Indian Institute of Science, Bengaluru 560012, India)

Sussex_lamba.pdf

11:20 Bayesian Methods for 0νββ Decay

Neutrinoless double-beta decay is a unique probe of BSM physics, owing to its sensitivity to both the neutrino mass scale and the proposed Majorana nature of neutrinos. In this research, we explore the Bayesian inference of constraints on neutrino mass and Majorana phases via Markov-Chain Monte Carlo (MCMC) methods. In particular we study the role that prior assumptions play in inference by constructing suitable least-informative reference priors, and analyze the consequences of correlated errors on theoretical calculations of 0νββ nuclear matrix elements.

Speaker: Graham Van Goffrier (University College London)

11:30 Planck-safe U(1)' Extensions Explaining RK(*)

In this talk we will investigate a class of heavy $Z^\prime$-models which are able to explain the recent $R_{K^{(*)}}$-data. The models feature new vector-like fermions as well as additional scalar fields.
In addition to well-known theoretical and phenomenological constraints, we also demand Planck safety, i.e. a stable and pole free Renormalization Group evolution up to the Planck scale.
We identify Planck safe benchmark scenarios fulfilling all relevant constraints and briefly discuss their phenomenological implications.

Speaker: Tim Höhne (TU Dortmund)

11:40 Simulating neutrino beam - using external data to improve the neutrino beam simulation at the NOvA and DUNE experiments

NOvA is a long-baseline, two-detector, accelerator-based neutrino experiment at FERMILAB. It studies neutrino properties which are too complicated to be directly extracted from data, therefore needing to compare the data to a simulation as close to the real world as possible. The basis of this simulation is the prediction of the neutrino beam, which in NOvA's case is created by colliding accelerated protons onto a carbon target, producing hadrons which decay into neutrinos. It is currently practically impossible to predict these processes directly from theory, requiring us to use phenomenological models, which often need to be tuned to experimental data for specific cases. NOvA currently uses the Geant4 particle generator to simulate the production of the neutrino beam and corrects it using data from external experiments like NA49 and MIPP. I will present my work which focuses on adding another set of data from the NA61 (SHINE) experiment at SPS at CERN, to get a more precise prediction of the neutrino beam. This will be very helpful to experiment DUNE, the follow-up neutrino experiment to NOvA, currently in preparation/building.

Speaker: Robert Kralik (University of Sussex)

NExTSchool2021Talk.pdf

11:50 Signals from Light Sneutrino Dark Matter at future e +e − Colliders

Neutrino oscillation implies the neutrino is massive which means the Standard Model(SM) need to be extended. Supersymmetry(SUSY) is one of the most studied frameworks to construct beyond the SM model. The advantage of SUSY model is sneutrino, the superpartner of neutrino, can decay visibly in collider in some case. It gives chance to study neutrino dynamics at collider. The minimal supersymmetric Standard Model (MSSM) still lacks a mechanism for neutrino mass generation, but it can be extended with various seesaw mechanisms. The SUSY and seesaw combination lead to a nonstandard Dark Matter(DM) candidate, the Least supersymmetric particle(LSP). We shall investigate the possibility of estimating neutrino Yukawa couplings in the Next-to-minimal supersymmetric Standard Model(NMSSM) with right-handed neutrinos with a right-sneutrino DM candidate.

Speaker: YI LIU (university of Southampton)

12:00 → 12:45 Discussion: Precision physics for discovery - Effective field theories beyond colliders - From particle physics to quantum gravity

Precision physics for discovery (Giulia Zanderighi)
Effective field theories beyond colliders (Emmanuel Stamou)
From particle physics to quantum gravity (Astrid Eichhorn)

Speakers: Astrid Eichhorn (CP3-Origins, University of Southern Denmark), Emmanuel Stamou (TUM), Giulia Zanderighi (Max-Planck-Institut fur Physik (DE))

12:45 → 15:30 Lunch break

15:30 → 17:00 New strategies for discovery at the LHC

Speaker: Josh McFayden (University of Sussex)

2021-06-29_NExT_LHCDiscoveries2_mcfayden.pdf

Recording

17:00 → 17:15 Short break

17:15 → 18:00 Social event

Wednesday, 30 June

09:15 → 09:30 Welcome / Announcements

09:30 → 11:00 Precision physics for discovery

Speaker: Giulia Zanderighi (Max-Planck-Institut fur Physik (DE))

Next-Lecture2-2021.pdf

Recording

11:00 → 11:15 Short break

11:15 → 12:45 From particle physics to quantum gravity

Speaker: Astrid Eichhorn (CP3-Origins, University of Southern Denmark)

Eichhorn_Sussex_PhD_school.pdf

Recording

12:45 → 13:45 Social lunch

13:45 → 14:30 SEPnet career session

This career session will host the following panellists:
- Riley Ilieva (software engineer, Bristol Nano Dynamics)
- Tamsin Nooney ( R&D engineer, BBC)
- Navin Seeburn (CTO, RedOptima)
- Hira Virdee (founder of Lumi Space)

Speaker: Veronica Benson

The 11th NExT Workshop - SEPnet Employer Panel Biographical Details.pdf

14:30 → 15:30 Break

15:30 → 16:20 Student talks: Session 3

15:30 A new technique for the reconstruction of the interaction vertices inside the CMS detector at HL-LHC.

For the High-Luminosity LHC (HL-LHC) expected in 2025 the CMS detector will be modified.
The upgrade of the tracker will enable tracks to be reconstructed in time for their use in the level 1 trigger.

I am exploring the effectiveness of a simple algorithm (that could be applied in HL-LHC) that will be able to take the track Z position resolution into account as a function of track pseudorapidity.

Speaker: Giovanna Salvi (Science and Technology Facilities Council STFC (GB))

Next PhD workshop.pdf

Next PhD workshop.pptx

15:40 Vorticity and spin in relativistic heavy-ion collisions

Since the first positive measurement of the Λ-hyperon global spin polarization in heavy-ion collisions by STAR in 2017, the understanding of the nature of this phenomenon is one of the most intriguing challenges for the community. As relativistic fluid dynamics celebrates multiple successes in describing collective dynamics of the QCD matter in such reactions, the natural question arises whether the spin dynamics can also be modeled in such a framework. In this talk, the motivation for and recent outcomes of the experimental hunt for the macroscopic footprints of quantum spin in the relativistic heavy-ion collisions will be presented and the theoretical challenges connected with formulating its collective description will be discussed.

Speaker: Mr Rajeev Singh (Institute of Nuclear Physics Polish Academy of Sciences)

NExT2021_Rajeev_Singh.pdf

15:50 High-mass Drell-Yan measurements at the ATLAS experiment and their phenomenological interpretation

Expanding previous ATLAS analysis at lower energies, the high mass DY analysis aims to study the single- and double-differential cross section of the Drell-Yan production of dileptons in the range m_{ll}>116 GeV, exploring a phase space crucial to set constraints on the parton distribution functions (PDFs), covering a wide range of the proton’s momentum fraction.

The large dilepton invariant mass range that this analysis covers allows us to search for shape deviations introduced by high-dimensional operators, whose effects are suppressed by powers of the new physics energy scale (Λ), in the context of Effective Field Theory (EFT) interpretations.

Speaker: Ricardo Gonzalez Lopez (University of Liverpool (GB))

NExT_HMDY_Slides.pdf

16:00 EW Sudakov logarithms and their implementation in OpenLoops

In the energy range above the electroweak (EW) scale the leading contributions coming from EW radiative corrections have a logarithmic nature: they can be both double (DL) or single (SL) logs and they are generally known as Sudakov logarithms. These terms increase with energy and they can provide corrections of order 10% or larger for scales of 1 TeV and beyond; therefore, it is crucial to take them properly into account for precise studies and predictions.
For processes which are not mass-suppressed at high energies these corrections are universal and factorize, i.e. they can be associated with external lines. In this lightning talk I will explain how in my research project I am working to implement such corrections in the OpenLoops framework, starting from a tree amplitude and generating the corresponding one with double pseudo-counterterms insertions which can account for the Sudakov factors.

Speaker: Lorenzo Mai

Sudakov_logarihtms.pdf

16:10 Exploring Multilepton Signatures From Dark Matter at the LHC

Limitations on the most general mono-X Dark Matter signature at colliders motivate searches beyond this, such as multilepton plus missing energy signatures. In this talk I present our latest limits on the inert 2-Higgs Doublet model (I2HDM) and Minimal Fermion Dark Matter model (MFDM) for 8/13 TeV pp collisions at the LHC, producing 2-3 leptons plus missing energy final states, using CheckMATE. I will show how 3 lepton final states play an important role, with a leading role in the MFDM case via cascading Higgs decays. We also provide limits and efficiencies for re-interpretation of any scalar of fermion DM model by the community.

Speaker: Arran Charles Freegard (Queen Mary University of London (GB))

Exploring Multilepton Signatures From Dark Matter at the LHC XI NEXT Lightning.pdf

16:20 → 16:30 Short break

16:30 → 17:15 Discussion: New strategies for discovery at the LHC -Precision Physics for discovery

New strategies for discovery at the LHC (Josh McFayden)
Precision Physics for discovery (Giulia Zanderighi)

Speaker: Josh McFayden (University of Sussex)

Thursday, 1 July

09:15 → 09:30 Welcome / Announcements

09:30 → 11:00 Gravitational waves as new physics probes

Speaker: Pedro Schwaller

GW probes lecture 1.pdf

GW probes lecture 2.pdf

Recording

11:00 → 11:10 Short break

11:10 → 12:00 Student talks: Session 4

11:10 Essential renormalization group

In the many years since K. Wilson first conceived of it, the exact RG, a.k.a. the non-perturbative functional renormalisation group has become a powerful technique that can be used to investigate a wide range of physical systems without relying on perturbation theory. Its modern formulation is based on an exact flow equation for a functional that interpolates between the bare Action and the Effective Action, called the Effective Average Action (EAA). The general strategy to treat such an exact equation consists of choosing an operator basis, depending on the symmetry of the underlying theory, and calculate the flow of the couplings associated with each operator. In practice, we must make approximations considering a finite number of terms, and then we verify the stability of the results by including more terms. The aim of my research consists of finding a way to make simplifications in practical calculations of the EAA flow equation: indeed, its complexity increases very fast as we include more and more terms in the expansion of EAA. It is possible to achieve such simplifications using the generalised form of the flow of the EAA which incorporates field redefinitions along the RG flow. To exemplify its utility, I present results of the Wilson-Fisher fixed point in three dimensions and pure quantum gravity.

Speaker: Alessio Baldazzi (SISSA)

Lightning_ talk_Essential_renormalization_group.pdf

11:20 Constraining asymptotically safe scalar-gravity theories

In this talk, I will briefly introduce the asymptotic-safety paradigm in quantum gravity. As an application, I will explore scalar-gravity systems to show the constraining power of asymptotic safety: the strength of the gravitational fluctuations should not exceed a critical value otherwise they generate complex fixed-point values in higher-order scalar interactions. On the other hand, within truncations of the matter-gravity dynamics, the fixed point lies beyond that critical strength unless fermions and vectors are included.

Speaker: Rafael Robson Lino dos Santos (Syddansk Universitet)

Lightning talk - NExT.pdf

11:30 A new subtraction scheme in perturbative QCD

In this talk we present a new approach called Local Analytic Sector subtraction, recently proposed in Turin, which aims to efficiently tackled the problem of the cancellation of infrared singularities in order to perform multi-parton NLO (and beyond) QCD calculations.
The actual cancellation is basically achieved subtracting from the real radiation scattering amplitude simple counterterms (set of functions that locally reproduce all its singular limits) and adding them back to the virtual contribution once integrated on the phase space of the unresolved radiations. Taking advantage of every degree of freedom left in the definition of these functions, the scheme implementation incorporates key insights from NLO successful subtraction methods, as the FKS partition of the radiative phase space into sectors and the remapping of the kinematics of momenta in the Born-level amplitudes introduced by Catani-Seymour, followed by the consequent factorization of the unresolved phase space. Thanks to this, the Local Analytic Sector subtraction manages to achieve the locality, the simplicity of calculation and the structure minimality that make it an ideal candidate for the formulation of a universal analytic scheme for the cancellation of infrared divergences in perturbative QCD.
At NLO the subtraction scheme has been recently generalized to the treatment of initial-state radiation, while at NNLO a proof of concept that applies to massless final-state QCD radiation only has been presented.

Speaker: Gloria Bertolotti (UNITO)

NExtPhD2021.pdf

11:40 Leading Hadronisation Corrections

I shall discuss the new method that Andrea Banfi, Basem El-Menoufi and myself have been working on to compute leading hadronisation corrections to two-jet event shapes in $e^+e^-$ annihilation.

Speaker: Mr Ryan Wood (University of Sussex)

XI NExT PhD Workshop - Ryan Wood.pdf

11:50 Invisible traces of conformal symmetry breaking

In our work we study the cosmological phase transition (PT) in a conformal extension of the Standard Model (SM). The model considered is called SU(2)cSM, it extends the SM gauge group by an additional hidden SU(2)$_X$ gauge group, and a scalar doublet (whilist singlet under SM gauge group). The tree-level potential has no mass terms, all the masses are generated via the Coleman-Weinberg mechanism. The new gauge boson $X$ can be considered as a dark matter candidate, also the model may be extended in order to include a mechanism of baryogenesis as well. Due to the large supercooling a strong gravitational waves (GWs) signal can be generated during the PT.
We carefully investigate the PT, taking into account recent developments in order to improve existing results and provide meaningful information for the forthcoming LISA searches.
We study the RG improved potential, distinguish between percolation and nucleation temperature of the bubbles, discuss the hydrodynamics, i.e possible runaway, and present resulting GW spectra. We briefly comment on the dark matter phenomenology.

Speaker: Maciej Kierkla (University of Warsaw)

mk_NExT_lightning_talk.pdf

12:00 → 12:45 Discussion: From particle physics to quantum gravity - Gravitational waves as new physics probes

From particle physics to quantum gravity (Astrid Eichhorn)
Gravitational waves as new physics probes (Pedro Schwaller)

Speakers: Astrid Eichhorn (CP3-Origins, University of Southern Denmark), Pedro Schwaller

12:45 → 14:30 Lunch break

14:30 → 15:00 Special session on widening participation: Physics Without Frontiers

Speaker: Kate Shaw (University of Sussex (GB))

15:00 → 15:30 Student talks: Student talks: session 5

15:00 A non-abelian SU(2)_D model of dark matter

In this talk, I will briefly discuss my current research on dark matter based on $SU(2)_D$ gauge group. The stability of the dark matter sector is required by the new gauge group. Two new scalar multiplets are introduced to give mass to SM particles and new gauge bosons. In this scenario, there are three possible dark matter in the model. The phenomenology study of this model needs further study in my future work.

Speaker: Nakorn Thongyoi (University of Southampton)

nakorn_NEXT_lightning_talk.pdf

nakorn_NEXT_lightning_talk.pptx

15:10 CP-odd higgs boson search via Zh channel

We study the process qq, gg → A → Z ∗h in a 2-Higgs Doublet Model Type-II where the mass of the CP-odd Higgs state A is lower than the rest mass of the Z and h particles (the latter being the Standard Model-like Higgs state discovered at the Large Hadron Collider in 2012), i.e., mA < mZ +mh ≈ 215 GeV. This is a mass range which is not being currently tested by ATLAS and CMS, yet we show that there can be sensitivity to it already during Runs 2 & 3, assuming leptonic decays of the gauge boson and bottom-antibottom quark ones for the Higgs boson.

Speaker: Matthew Chapman (University of Bristol (GB))

2hdmtalk.pdf

15:20 Probing Asymmetric Dark Matter with the CMB

The CMB anisotropies are an incredibly accurate probe of the ionisation history of our universe. Sources of energy injection into the intergalactic medium (IGM) act to dampen the CMB signal and can give insight into the processes that lead to the reionization of our universe. Typically, the epoch of reionization is attributed to energy injection from early star formation. Other sources of energy injection such as dark matter (DM) annihilation, is the main interest in this project. Current Planck constraints on DM annihilation are summarised in the annihilation parameter, which is a function of a DM particle mass, cross-section, and efficiency of the energy deposition rate. In this project, the CMB constraints on WIMPs-like particles have been investigated for the scenario where there is a dark matter asymmetry in this model called, asymmetric dark matter (ADM). This has been heavily motivated by the fact there is an asymmetry for baryonic matter. Useful updates on the CMB constraints for the annihilation parameter have meant there is a new parameter space in determining the nature of an ADM scenario. Furthermore, a new code has been developed, AsymDM, which can now produce efficient and accurate calculations of the annihilation cross-section, for a given mass, asymmetry, CMB anisotropy constraints, and the dark matter abundance. The results from this code can be applied to other models that include DM annihilation given the simple scaling relation that had been found in this work. This result was applied to constraining ADM using an exciting and upcoming field within cosmology, spectral distortions.

Speaker: Charis Pooni (King's College London)

charis_pooni_adm_cmb_indico.pdf

15:30 → 17:00 Effective field theories beyond colliders

Speaker: Emmanuel Stamou (EPFL)

NExT_EFTs_beyond_colliders.pdf

Recording

17:00 → 17:15 Short break

17:15 → 18:00 Social event

Friday, 2 July

09:15 → 09:30 Welcome / Announcements

09:30 → 11:00 From particle physics to quantum gravity

Speaker: Astrid Eichhorn (CP3-Origins, University of Southern Denmark)

Eichhorn_Sussex_PhD_school.pdf

Recording

11:00 → 11:15 Short break

11:15 → 12:45 Gravitational waves as new physics probes

Speaker: Pedro Schwaller

GW probes lecture 3.pdf

GW probes lecture 4.pdf

Recording

12:45 → 13:45 Lunch

13:45 → 14:30 SEPnet career session

This session will host the following panellists:
Katie Ley (Sopra Steria*)
William Marlow (software engineer, IBM)
Ash Stott ( eOsphere)

*Sopra Steria is the trading name of the following companies (all registered in England & Wales): (i) Sopra Steria Limited (No. 04077975) (ii) Sopra Group Ltd (No. 01643041) (iii) Sopra Group Holding Ltd (No. 01588948)

Speaker: Veronica Benson

The 11th NExT Workshop - SEPnet Employer Panel Biographical Details.pdf

14:30 → 15:15 Discussion: Gravitational waves as new physics probes - Effective field theories beyond colliders

Gravitational waves as new physics probes (Pedro Schwaller)
Effective field theories beyond colliders (Emmanuel Stamou)

Speakers: Emmanuel Stamou (TUM), Pedro Schwaller

15:15 → 15:30 Prizes / Farewell