New Physics Directions in the LHC era and beyond

Session

Morning

22 Apr 2024, 09:45

Max Planck Institute for Nuclear Physics, Heidelberg, Germany

Conveners

Morning: Session 1

• Florian Goertz (Max-Planck-Institut fuer Kernphysik, Heidelberg, Germany)

Morning: Session 2

• Manfred Lindner (Max-Planck-Institut fuer Kernphysik, Heidelberg, Germany)

Morning: Session 1

• Georgi Dvali

Morning: Session 2

• Belen Gavela Legazpi (Universidad Autonoma de Madrid (ES))

Morning: Session 1

• Joerg Jaeckel (ITP Heidelberg)

Morning: Session 2

• Hooman Davoudiasl

Morning: Session 1

• Milada Muhlleitner

Morning: Session 2

• There are no conveners in this block

Morning: Session 1

• Alexei Smirnov

Morning: Session 2

• Tony Gherghetta (University of Minnesota (US))

85. Opening Remarks

Dr Florian Goertz (Max-Planck-Institut fuer Kernphysik, Heidelberg, Germany)

22/04/2024, 09:45

73. Naturalness as a Method of Theoretical Particle Physics

James Daniel Wells (University of Michigan (US))

22/04/2024, 10:00

Invited Talk

For decades naturalness and finetuning considerations have been important factors in the work of theoretical particle physics. I explain how such considerations fit into the broader scheme of methods of theoretical particle physics. I then formalize the intuitions of particle physicists over the decades within effective field theory language and justify several assertions along the way: the...

77. S-matrix and naturalness

Georgi Dvali

22/04/2024, 10:30

Invited Talk

62. First order phase transitions with utra fast bubble: dynamics and applications

Aleksandr Azatov (INFN - National Institute for Nuclear Physics)

22/04/2024, 11:30

Invited Talk

In my talk I will discuss the first order phase transitions with fast bubbles. Particular attention will be paid to the heavy fields production and its applications for the non thermal Dark Matter production and baryogenesis.

61. Applications of the Tunneling Potential Formalism

Jose Espinosa (Departm.of Physics & Astronomy)

22/04/2024, 12:00

Invited Talk

The Tunneling Potential formalism offers an alternative to the Euclidean bounce approach for calculating tunneling actions, which govern the exponential suppression of metastable vacua decay in quantum field theory. In this talk, I will discuss how this formalism elegantly describes gravitational effects on vacuum decay, bubble-of-nothing decays, domain walls, and more.

57. Flavoured Dark Matter and its Phenomenology

Monika Blanke (Karlsruhe Institute of Technology)

22/04/2024, 12:30

Invited Talk

After introducing the general concept of flavoured dark matter, in this talk I will focus on a specific model of flavoured Majorana dark matter. I will provide a review of the constraints coming from flavour physics and direct and indirect detection constraints. I will then focus on different possible scenarios for dark matter freeze-out and their implications for collider phenomenology.

48. Directions in Composite Dynamics: From Composite Higgs to a Natural Dual Magnetic Standard Model.

Francesco Sannino

23/04/2024, 09:30

Invited Talk

59. Phenomenology of Composite Higgs Models with a fermionic UV completion

Werner Rudolf Porod (Julius Maximilians Universitaet Wuerzburg (DE))

23/04/2024, 10:00

Invited Talk

60. Composite Higgs cosmology & the dilaton at the LHC

Geraldine Servant (Deutsches Elektronen-Synchrotron (DE))

23/04/2024, 10:30

Invited Talk

71. Searching for charming ALPs

Adrian Carmona Bermudez (Universidad de Granada (ES))

23/04/2024, 11:30

Invited Talk

55. Semisymmetries in 2HDM

Bohdan Grzadkowski

23/04/2024, 12:00

Invited Talk

The Two Higgs Doublet Model invariant under the gauge group SU (2) × U (1) is known to have six additional global discrete or continuous symmetries of its scalar sector. We have discovered regions of parameter space of the model which are basis and renormalization group invariant to all orders of perturbation theory in the scalar and gauge sectors, but correspond to none of the hitherto...

72. BSMPT v3: A Tool for Phase Transitions and Primordial Gravitational Waves in Extended Higgs Sectors

Milada Muhlleitner

23/04/2024, 12:30

Invited Talk

74. Wormholes in the Axiverse

Luca Vecchi (INFN)

24/04/2024, 09:30

Invited Talk

64. Dark Matter Heating of Neutron Stars: Advantages and Challenges

Koichi Hamaguchi (University of Tokyo)

24/04/2024, 10:00

Invited Talk

68. The role of impurities in cosmological phase transitions

Dr Simone Blasi (DESY)

24/04/2024, 10:30

Invited Talk

Topological defects can play an important role in cosmology. In this talk I will discuss a less explored effect that arises in the context of first order phase transitions, by which defects can act as local impurities catalysing the decay of the false vacuum. This dynamics takes place in one of the simplest extensions of the Standard Model, the xSM, where domain wall configurations associated...

80. Partial compositeness at LHC and on the Lattice

Gabriele Ferretti

24/04/2024, 11:30

Talk

We review models of partial compositeness constructed using ordinary four-dimensional gauge theories with fermionic matter. We show that they give rise to a set of collider signatures of interest for the high luminosity run of LHC (mostly light scalars with low production cross-sections). We also discuss some observables that need to be computed on the lattice in order to establish the...

28. Vacuum Stability in the Standard Model and Beyond

Tom Steudtner

24/04/2024, 11:45

Talk

We revisit the stability analysis of the Standard Model Higgs potential, using both the highest theoretical precision and the most accurate determination of input parameters to date. The stability of the electroweak vacuum is found to be subject to the top mass and the strong coupling constant, and we discuss the impact of their central values and uncertainties in detail.
We further...

2. Exorcizing a Model of Fuzzy Electroweak Interactions

Dr Florian NORTIER (CNRS - IP2I Lyon)

24/04/2024, 12:00

Talk

Inspired by tower truncation in string field theory, weakly nonlocal (WNL) quantum field theories (QFT's) have been proposed to soften the UV behavior in particle physics for naturalness and quantum gravity. Pseudo-differential form factors preclude the appearance of pathological ghosts in the particle spectrum, contrary to local higher-derivative field theories à la Lee-Wick. However, when...

18. Phenomenology of the 2HDM+a

Dr Giorgio Arcadi (University of Messina (Italy))

24/04/2024, 12:15

Talk

I will discuss phenomenological aspects of the 2HDM+a model complemented wth a fermionic Dark Matter candidate. I will show how the model complies with Dark Matter Phenomenology, can provide an interpretation of some recent experimental anomalies and, finally, can account for GW signals from a First Order Phase Transition in the Early Universe.

8. The principle of global relativity

Jochum Johan Van Der Bij

24/04/2024, 12:30

Talk

I present a new principle of relativity in physics.
It is an alternative away from naturalness towards a new
paradigm.
It allows for an a priori derivation of the gauge structure of nature.
In particular it can explain why there are precisely three generations
of fermions.
A specific form of dark matter is preferred.
The standard model can only be extended in a minimalistic way.

44. Tri-unification: a separate $SU(5)$ for each fermion family

Avelino Vicente (IFIC - CSIC / U. Valencia)

24/04/2024, 12:45

Talk

I discuss a grand unified theory that assigns a separate $SU(5)$ gauge group to each fermion family. The equality of the gauge couplings at the unification scale is enforced by means of a cyclic ${\mathbb{Z}}_3$ symmetry. Such tri-unification reconciles the idea of gauge non-universality with gauge coupling unification, opening the possibility to build consistent non-universal descriptions of...

63. A Holographic View of the QCD Axion

Tony Gherghetta (University of Minnesota (US))

25/04/2024, 09:30

Invited Talk

69. BSM Physics with Charm

Gudrun Hiller (Technische Universitaet Dortmund (DE))

25/04/2024, 10:00

Invited Talk

Charm physics invites SM tests due to the abundance of data, complementarity with precision beauty and kaon searches
and its part in the flavor puzzle. We present present puzzles, recent developments and future oppotunities for light and heavy new physics.

70. Phenomenology of parity solution to the strong CP problem

Keisuke Harigaya

25/04/2024, 10:30

Invited Talk

79. Weakly-coupled light new physics (Teekolloquium)

Matthias Neubert

25/04/2024, 11:15

Invited Talk

The existence of light, weakly-interacting new particles beyond the Standard Model is a well-motivated alternative to new particles existing at the TeV scale or beyond. With the example of axion-like particles (ALPs), which offer an explanation of the puzzling absence of the electric dipole moment of the neutron, we discuss the current status of both direct searches at the LHC and in flavor...

66. Pushing the limits of dark matter -- from the Cosmos to the Lab

Julia Harz

26/04/2024, 09:30

Invited Talk

67. Probing dark sectors with gravitational waves

Pedro Schwaller

26/04/2024, 10:00

Invited Talk

Gravitational waves provide a new window into the early Universe, and thus a new way of probing the dynamics of dark sectors. I will provide an overview of primordial gravitational wave sources, highlight what we have learned recently and speculate about possible future insights.

54. Adagio for Thermal Relics

Hooman Davoudiasl

26/04/2024, 10:30

Invited Talk

Weaker gravity during an early epoch would yield a smaller Hubble rate, which is the measure of efficiency for primordial processes. A slower cosmic tempo can accommodate alternative cosmological histories. We consider this possibility for thermal relic dark matter, in the context of extra dimensional models. These models could potentially alleviate the hierarchy problem and may be testable...

47. Dark branes for PTA data and dark matter

Mariano Quiros Carcelen (The Barcelona Institute of Science and Technology (BIST) (ES))

26/04/2024, 11:30

Invited Talk

In the setup of a warped extra dimension we have proposed a far IR brane, at the GeV scale, with a conformal sector confining at a first order phase transition, and generating a stochastic gravitational waves background which can accommodate the recent NANOGrav signal. If dark matter is localized in the dark brane, it has only gravitational interactions with the Standard Model: it can easily...

58. SM and beyond: The lessons, the puzzles, and the way forward

Tao Han

26/04/2024, 12:00

Invited Talk

78. Closing Remarks

Dr Florian Goertz (Max-Planck-Institut fuer Kernphysik, Heidelberg, Germany)

26/04/2024, 12:30

Invited Talk