Conveners
Scientific session: 1
- Ricardo Gonçalo (UC/LIP)
Scientific session: 2
- Francisco Neves (LIP Coimbra)
Scientific session: 3
- Filipe Veloso (LIP/FCTUC)
Scientific session: 4
- Sofia Andringa (LIP)
Scientific session: 5
- Claudio Frederico Pascoal da Silva (LIP Coimbra)
Scientific session: 6
- Filomena Santos (LIP)
Scientific session: 7
- Nuno Barros (LIP)
Scientific session: 8
- Nuno Castro (LIP and University of Minho)
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Luis Afonso (LIP)06/07/2022, 10:50
Cosmic rays outreach existing practices and their potential are analyzed. It is intended to build innovative means of cosmic rays outreach through participatory design method. Outreach means are developed by LIP cosmic rays researchers, Lousal science center promoters and science center potential users. All participants proposed hypotheses for two museological modules construction one on...
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Chiara Badiali (GoLP/Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico )06/07/2022, 11:02
Muon colliders are being currently considered as a next step for HEP [1]. Since muons, as electrons, are fundamental particles, their full energy is available in collisions, in contrast to protons. Nonetheless, the finite mean lifetime of muons (2.2 μs at rest) means that the muons must be collected, cooled, and rapidly accelerated before a significant number of them decay. Plasma accelerators...
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Esteban Chalbaud (LIP-Coimbra)06/07/2022, 11:14
In this talk, we present simplified Dark Matter (DM) models for particle mediators between the Dark Sector and the Standard Model of particle physics. We focus on DM mediators produced in the s-channel together with a top quark pair, which are expected to be within experimental reach of the LHC.
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We explore the experimental sensitivity obtained from CP-sensitive variables used in Higgs... -
André Cordeiro (LIP-Lisbon)06/07/2022, 11:26
Quantum Chromodynamics (QCD), the theory describing strong interactions, is known to exhibit collective behaviour at high temperature and density, as in the Quark-Gluon Plasma (QGP) - a rapidly expanding, nearly perfect liquid that filled the early universe. Due to its unique properties, the QGP is the main object of study in ultra-relativistic heavy ion colliders, such as RHIC (at Brookhaven...
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Etevaldo Filho (Universidade de Aveiro )06/07/2022, 12:10
Dark matter remains a central mystery of modern-day science. The elusiveness of dark matter candidates in colliders suggests we further search for its true nature where it was first unveiled
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- in astrophysics via its gravitational effects. In particular, the new golden age in strong gravity
- with the gravitational wave era and remarkable new electromagnetic observations of compact objects... -
Pedro Costa (LIP/IST)06/07/2022, 12:22
My PhD work focuses primarily on astroparticle multi-messenger physics. Thus far, a particular emphasis has been placed on strategies for expanding the limits of the detection capabilities of ground-based observatories to maximise signal background discrimination efficiency and to encompass more messengers.
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More specifically, one of the objectives of my PhD work is to determine whether a... -
Carina Coelho (LIP-Lisboa)06/07/2022, 12:34
Radiotherapy (RT) is a safe and well-established medical treatment modality, defined by decades of clinical application, used alone or in combination with surgery and/or chemotherapy. It’s used especially in cancer treatment, with the aim to destroy tumour growth while minimising damage to the surrounding healthy tissue[1-3]. One of the most important effects of RT, at a cellular level, is the...
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Giacomo Da Molin (LIP)06/07/2022, 12:46
The aim of this PhD thesis is to measure the lepton flavour universality (LFU)
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in CMS at the Large Hadron Collider (LHC). LHC is a proton-proton collider
built in Geneve, where protons collide at about √s = 13 TeV, producing a great
amount of data used to study physical processes in detectors such as CMS.
In this presentation, I will present as motivation for my thesis a brief review... -
2. Modeling the radiobiological effects of gold nanoparticles in proton therapy of glioblastomas (1)Joana Antunes (LIP/FCUL)06/07/2022, 12:58
Several studies show that the combination of high-Z nanoparticles and external radiotherapy leads to an increased radiation effect in tumoral cells without an increase of the patient dose.
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However, it is not yet clear how the sequence of physical, chemical, and biological mechanisms contributes to the observed synergic effect.The objective of this work is to develop simulation tools that... -
João Canhoto (IST/C2TN )06/07/2022, 13:10
While the number of patients treated with Proton Therapy (PT) has largely increased, associated and unexpected late effects have been observed over the last few years, which could be related to the uncertainties in the increased relative biological effectiveness (RBE) of protons stopping in organs at risk. The accepted clinical practice is the use of a constant RBE value equal to 1.1, derived...
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Fernando Souza (LIP)06/07/2022, 13:22
When trying to test models of new physics against experimental results, the customary approach is to simply sample random points from the parameter space of the model, calculate their predicted values for the desired observables and compare them to experimental data. However, due to the typically large number of parameters in these models, this process is highly time consuming and inefficient....
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Rudnei Machado (LIP )06/07/2022, 14:40
Plastic scintillators are currently one of the most economical commercial options for use in particle detection. They are characterized by producing scintillation (detectable photons in the visible part of the light spectrum) when struck by a photon or charged particle. They also have as important characteristics an extremely fast light signal and a high light response. Scintillator plastics...
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Alexandra Fernandes (LIP / University of Minho )06/07/2022, 14:52
The discovery of ultra-high energy (UHE) photons, whose production is expected through cosmic-ray interactions with the source environment, would allow the identification of the astrophysical sources of UHE cosmic rays and unveil many of the mysteries surrounding their production and propagation. The field of high energy photons has had, in the last year, a couple of exciting findings with...
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Nuno Fernandes (LIP - IST)06/07/2022, 15:04
The Large Hadron Collider (LHC) is the highest energy particle accelerator ever built. The High Luminosity LHC Upgrade, expected for the years 2026-2028, will increase the LHC collision rate up to a factor 7 with respect to the nominal values, to allow acquiring a huge amount of data and pushing the limits of our understanding of Nature. The ATLAS experiment, which records the proton and ion...
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Eduardo Ferreira (LIP - IST)06/07/2022, 15:16
We present a novel method for the calculation of Light-Front Wavefunctions (LFWF) from the hadronic Bethe-Salpeter Wavefunctions.
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This problem is of great importance, for example, in the study of hadrons — the particles composed of quarks and gluons described by Quantum Chromodynamics (QCD). The study of hadrons on the light-front allows for the calculation of several hadronic structure... -
Cristiana Rodrigues (LIP)06/07/2022, 15:28
The ability to measure the radiation effects on healthy and tumorous tissue at the microscale is essential and still presents a huge challenge. There are some instruments that can make such measurements, but most of these are bigger than the size of a cell, and the measured dose is integrated over a small volume. These instruments are unable to produce microscopic descriptions about how the...
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Guilherme Soares (LIP)06/07/2022, 15:40
Neutrinos are produced abundantly at colliders, still collider neutrinos have yet to be detected. The LHC will deliver the highest energies yet of man-made neutrinos, and their detection will be a milestone. This will be achieved at the SND@LHC experiment, which is located 480 meters away from the ATLAS interaction point, near the beam line direction.
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The experiment is up and running for the... -
Johan Wulff (LIP)06/07/2022, 15:52
The large hadron collider (LHC) is a particle accelerator located inside a 27 km circular tunnel near Geneva, Switzerland, primarily built to shed light on the nature of the electroweak symmetry breaking and to examine the mathematical consistency of the standard model (SM) of particle physics at energies above 1 TeV [1]. The two beams of relativistic protons accelerated in the tunnel of the...
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João Pedro Arruda Gonçalves (LIP)06/07/2022, 16:35
In heavy-ion collisions in RHIC and at the LHC a nearly perfect fluid state of matter is generated, the QGP, expanding to the surrounding detector in a very short timescale. Jets, collimated sprays of hadrons reconstructed by some clustering algorithm, are very well understood in the absence of this dense medium and are, not only for this reason, amongst the prime tools to study this state of...
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Lucio Gibilisco (LIP - IST)06/07/2022, 16:47
The focus of my PhD thesis at LIP is the measurement of PeVatrons with the future Southern Wide-field Gamma-ray Observatory (SWGO), which will have the ability to survey the Galactic centre. Currently, I am working on the exploration of extended air shower characteristics, looking in particular for quantities that can improve SWGO’s gamma/hadron separation capabilities, in the effort of...
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Tiago Gonçalves (IA-U.Lisboa )06/07/2022, 16:59
I explore the modified gravity theory which goes by the name of f(R,T) gravity, and study possible cosmological background evolutions and sudden singularities, as well, as constraints from big bang nucleosynthesis.
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Arianna Foschi (IST)06/07/2022, 17:11
The motion of S2, one of the closest star to the Galactic Center, has been largely studied and used to set constraints on the compact object at the center of the Milky Way, which is well established to be a supermassive black hole.
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However, the nature of the environment around Sgr A∗ is still an open issue, leaving the intriguing hypothesis that it is made of dark matter open. In this talk I... -
Paulo Ferraz (Universidade de Coimbra)07/07/2022, 09:30
In this work in progress, we consider a modified version of the Warm Little Inflaton inflationary model by eliminating one of the fields interacting with the inflaton field. At a first instance, this appears to preclude the slow-roll dynamics by introducing large corrections to the slow-roll eta parameter. However, we show that this behaviour is fictitious and, in reality, the temporal average...
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Nuno Torrado (GoLP-IPFN )07/07/2022, 09:43
N. Torrado 1, N. Lopes 1, J. Fernando Silva 2, C. Amoedo 3 and A.Sublet 3
1 GoLP/IPFN, Instituto Superior Técnico, Lisbon, Portugal
2 INESC-ID, Instituto Superior Técnico, Lisbon, Portugal
3 CERN, Geneva, SwitzerlandThe AWAKE experiment, running at CERN, investigates particle acceleration in plasma wakefield [1]. Since the current plasma source (10 m long and created in a rubidium...
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Luis Raul Torres Rojas (LIP)07/07/2022, 09:55
In the past two decades there has been tremendous progress in the theoretical and experimental investigation of multiquark states, which has expanded our understanding of what a “hadron” is. Experimental evidence suggests that Nature does not only form “conventional” hadrons such as mesons as quark-antiquark states and baryons as three-quark states, but also more exotic combinations such as...
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João Martins Silva07/07/2022, 10:08
Jets are abundantly produced in collider experiments and they allow for stringent tests of QCD, given that their evolution spans a wide range of scales - from the initial hard scale of the collision to the hadronic scale at which they are detected. When jets are produced in the presence of the Quark-Gluon Plasma which they propagate through, as in heavy ion collisions, this range of scales...
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Pedro Teixeira (LIP /U Évora)07/07/2022, 10:23
Author(s)
Pedro Teixeira1, Alberto Blanco2, Bento Caldeira1, Bernardo Tomé2, Isabel Alexandre3, João Matos4, Jorge Silva5, José Borges1, Lorenzo Cazon6, Luís Afonso2, Luís Lopes2, Magda Duarte7, Mário Pimenta2, 3, Mourad Bezzeghoud1, Paolo Dobrilla2, Pedro Assis2, 3, Raul Sarmento2, Rui Oliveira1, Sofia Andringa21 Physics Department (ECT), Institute of Earth Sciences (ICT/IIFA), Earth...
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Diogo Castelão (FCUL)07/07/2022, 10:40
In this talk I will present the work of testing, for the first time, a Unified Dark Matter-Energy model in the non-linear regime. Starting from a linear implementation, which includes a non linear effect named backreaction, in the Boltzmann code CLASS of a UDM Chaplygin Gas model tested against weak lensing, CMB, Sne IA and BAO, we focus on a simpler UDM model lagrangian to be implemented as a...
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Joan Bachs Esteban (CENTRA - IST)07/07/2022, 11:25
In the standard ΛCDM model, bounded structures would not have formed until the late universe because of the following premises: gravity is the dominant force responsible for matter clustering, and primordial density perturbations follow a nearly scale-invariant spectrum at all scales. Still, it should not be like that in an alternative cosmology. We consider a light scalar field - which can be...
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Catarina Magalhães (I3N/University of Aveiro )07/07/2022, 11:40
In Proton Therapy (PT), the highly conformal dose irradiation of the tumors makes this technique very powerful, resulting in better treatment outcomes, survival rates, and overall quality of life for cancer patients. However, the characteristics of the depth-dose profile (Bragg-Peak) demands for an extremely precise beam control since the dose profile is much more sensitive to spatial...
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Beatriz Pereira (LIP)07/07/2022, 11:52
TileCal, a sampling hadronic calorimeter, is an essential component of the ATLAS detector at the LHC. The active material, made of plastic scintillating tiles, produces light when traversed by ionising particles. The light is transmitted to photomultiplier tubes by wavelength shifting fibres.
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The High Luminosity-LHC (HL-LHC) program will extend the TileCal lifetime for 20 years more than... -
Luis Coelho (CERN, LIP-Coimbra)07/07/2022, 12:07
The reconstruction of trajectories of charged particles is one of the the most complex and CPU consuming stages of event reconstruction in particle physics experiments. At the High Luminosity Large Hadron Collider (HL-LHC), up to 200 proton-proton collisions happen during a single bunch crossing, which leads on average to tens of thousands of particles emerging from the interaction region....
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José Venâncio (LIP)07/07/2022, 12:22
Radiotherapy, one of the techniques used to treat cancer, can be divided into conventional (gamma and electrons) and particle or ion beam therapy. The latter, realized mainly with protons or carbon nuclei, has been highly anticipated due to its dose deposition profile with a monoenergetic beam characterized by a high deposition region at a particular depth - the Bragg Peak.
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Dose deposition... -
João Dias (Centro de Astrofísica da Universidade do Porto)07/07/2022, 14:25
Seeking for the variation of fundamental constants is a crucial step in our quest to go beyond our standard models of fundamental physics. Implementing such variations in a self-consistent way can be achieved by coupling a scalar field to the theory. In the generalized Bekenstein model the field is coupled to both dark matter and the cosmological constant, leading to variations of the...
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Matteo Piani (CENTRA/IST)07/07/2022, 14:40
We study the phenomenology of the Higgs-Dilaton model in the context of EinsteinCartan gravity, focusing on the separate impact of the Holst and Nieh-Yan terms on the inflationary observables. Using analytical and numerical techniques, we show the predictions of these scenarios to display an attractor-like behavior intrinsically related to the curvature of the field-space manifold in the...
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Matteo Pisano (LIP)07/07/2022, 14:55
The Large Hadron Collider (LHC) is a circular particle accelerator located in Geneva (Switzerland). The aim of the accelerator is boosting a beam of protons up to an energy of 6.5 TeV. Subsequently, protons are forced to collide, generating a collection of particles. These particles will interact with a detector located around the interaction point and their kinematic quantities will be...
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João Rino-Silvestre (CENTRA/IST)07/07/2022, 15:10
Dust grains are key ingredients in understanding the interstellar medium (ISM) and the largest effects of dust on astronomical observations, the extinction of light in the line of sight and the wavelength dependent reddening it causes, both affecting distance measurements for cosmology when using extragalactic sources such as supernovae. The shape, orientation and distribution of the dust...
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Duarte Guerreiro (LIP)07/07/2022, 15:25
Radiobiology is a multidisciplinary area where the effects of radiation in cells, tissues and organs are studied. To understand the biological effects of radiation it’s important to have a measurement of the energy deposition at the micro or even nano-scale. This project is focused in the development of a detector that offers radiobiology researchers the possibility to achieve real-time dose...
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Borja Gonzalez (LIP/IST)07/07/2022, 15:40
The Southern Wide-field Gamma-ray Observatory (SWGO) is the next generation ground-based gamma-ray observatory to survey the Southern hemisphere sky. The experiment, currently in an R&D phase, is expected to have a large array of the order of a few km2 composed of water Cherenkov detectors (WCDs) placed at a high altitude (4.4 km a.s.l. or higher) in South America.
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Such an ambitious project... -
Ivo Sengo (University of Aveiro)07/07/2022, 16:25
We report the results of the first comprehensive study on the shadows of fundamental Kerr black holes with Proca hair. Some of these solutions show striking non-Kerr features, such as chaotic patterns, non-smooth shadow edges, and ghost shadows. We illustrate how fundamental photon orbits can help us understand some of these features. Nonetheless, a wide range of solutions where deviations...
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Guilherme Guedes (LIP)07/07/2022, 16:40
The lack of evidence of new physics so far leads us to pursue the model-independent approach encoded in the Standard Model Effective Field Theory (SMEFT). In this talk I will go
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over certain directions in which to extend our predictions within the SMEFT. Firstly by considering the contribution of dimension-8 terms; these terms are important not only from the experimental point of view, since... -
Miguel Levy (CFTP/IST)07/07/2022, 16:55
Ayushi Srivastava(a), Miguel Levy (b∗), Dipankar Das (a)
(a) Department of Physics, Indian Institute of Technology (Indore), Khandwa Road, Simrol, 453552 Indore, India
(b) Centro de Física Teórica de Partículas-CFTP and Departamento de Física, Instituto Superior Técnico, Universidade de Lisboa, Av Rovisco Pais, 1, P-1049-001 Lisboa, PortugalWe present a D4 flavored extension of the SM...
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Maura Barros (LIP/Minho University)07/07/2022, 17:10
The Standard Model (SM) can be considered an effective low-energy expression of a
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more fundamental theory. There are some observed phenomena not explained by the SM the existence of dark matter (DM) being one of them.
The monotop signature with one top quark and missing transverse energy in the final state can be a powerful probe of specific DM signals. The search for DM can also be done... -
Ricardo Barrué (LIP)07/07/2022, 17:25
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Mariana Araujo (LIP-Lisboa)07/07/2022, 17:40
The dynamics of hadron formation are still not fully understood due to the complex nature of QCD and the difficulty of studying it through analytical perturbative calculations. Quarkonia are the simplest possible bound states and thus provide the ideal window through which to study this open problem.
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Exploiting the large volume of quarkonium data produced at the LHC, we are working, within... -
Afonso Marques (LIP)