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SUMMARY:#StudentSeminar: PETit\, first prototype of PETALO (Positron Emiss
 ion TOF Apparatus with Liquid xenOn)
DTSTART;VALUE=DATE-TIME:20260417T080000Z
DTEND;VALUE=DATE-TIME:20260417T093000Z
DTSTAMP;VALUE=DATE-TIME:20260514T225300Z
UID:indico-event-8544@indico.ific.uv.es
DESCRIPTION:Speakers: Nerea Salor Iguiñiz\nA Positron Emission Tomography
  (PET) scanner is a device widely used in \nhospitals to obtain 3D images
  of the metabolic activity of the body. It \nis used for cancer detection
 \, as well as for heart and brain diseases\, \nand other physiological pr
 ocesses.\n\nPETALO is a project that consists of a PET system based on liq
 uid xenon \n(LXe) instead of crystals as the scintillator material. LXe i
 s a very \ngood candidate for use in PET due to its scintillation propert
 ies: high \nlight yield and fast decay time. PETALO uses SiPMs for readou
 t and fast \nelectronics from PETsys to be applied in TOF-PET technology.
 \n\nIn this talk\, I will first introduce the principles of a PET scanner\
 , \nand then I will focus on explaining how our first prototype PETit\, 
 \ndeveloped following the PETALO concept\, works. Finally\, I will present
  \nthe results on energy and time resolution obtained with this prototype
 \, \nas well as the problems we faced in achieving them.\nhttps://indico.
 ific.uv.es/event/8544/
LOCATION:1001-Primera-1-1-1 - Paterna. Seminario (Universe)
URL:https://indico.ific.uv.es/event/8544/
END:VEVENT
BEGIN:VEVENT
SUMMARY:#Student Seminar: How Hot and Excited Can Dark Matter Make the Ear
 ly Universe? Lessons from the CMB and 21-cm Signal
DTSTART;VALUE=DATE-TIME:20260417T130000Z
DTEND;VALUE=DATE-TIME:20260417T150000Z
DTSTAMP;VALUE=DATE-TIME:20260514T225300Z
UID:indico-event-8550@indico.ific.uv.es
DESCRIPTION:Speakers: Dominic Agius (IFIC - University of Valencia)\nCosmo
 logical probes of the early Universe offer a powerful way to test dark mat
 ter scenarios that modify its thermal and ionization history. The cosmic m
 icrowave background already places some of the strongest constraints on mo
 dels involving exotic energy injection\, while upcoming 21-cm observations
  promise a new window into the cosmic dawn and the epoch of reionization. 
 These measurements are also sensitive to the uncertain properties of the f
 irst stars and galaxies\, making the interpretation of dark matter signatu
 res especially challenging.\n\nIn this talk\, I will review current cosmic
  microwave background constraints on annihilating dark matter and primordi
 al black holes\, and then discuss how astrophysical uncertainties impact f
 orecast constraints from the 21-cm signal.\nhttps://indico.ific.uv.es/even
 t/8550/
LOCATION:1001-Primera-1-1-1 - Paterna. Seminario (Universe)
URL:https://indico.ific.uv.es/event/8550/
END:VEVENT
BEGIN:VEVENT
SUMMARY:#StudentSeminar: Total absorption spectroscopy in the vicinity of 
 100Sn
DTSTART;VALUE=DATE-TIME:20260420T130000Z
DTEND;VALUE=DATE-TIME:20260420T150000Z
DTSTAMP;VALUE=DATE-TIME:20260514T225300Z
UID:indico-event-8537@indico.ific.uv.es
DESCRIPTION:Speakers: Jose Antonio Victoria\nhttps://indico.ific.uv.es/eve
 nt/8537/
LOCATION:1001-Primera-1-1-1 - Paterna. Seminario (Universe)
URL:https://indico.ific.uv.es/event/8537/
END:VEVENT
BEGIN:VEVENT
SUMMARY:#StudentSeminar: Search for heavy Higgs boson decaying into a pair
  of Tau leptons with the ATLAS detector.
DTSTART;VALUE=DATE-TIME:20260422T080000Z
DTEND;VALUE=DATE-TIME:20260422T090000Z
DTSTAMP;VALUE=DATE-TIME:20260514T225300Z
UID:indico-event-8568@indico.ific.uv.es
DESCRIPTION:Speakers: Arya Aikot\nExtensions of the Standard Model\, such 
 as the Minimal Supersymmetric Standard Model (MSSM)\, predict an extended 
 Higgs sector with additional neutral heavy Higgs bosons (H/A). These parti
 cles can have enhanced couplings to down-type fermions at large tan⁡β.\
 n\nThis talk presents a search for heavy Higgs bosons decaying to tau lept
 on pairs in the fully hadronic (τ-had τ-had​) final state using ATLAS 
 Run~2 and Run~3 data. The analysis uses the topology of two high-pT taus 
 produced back-to-back in the transverse plane. The dominant multijet backg
 round is estimated using a data-driven method\, while other backgrounds ar
 e modeled using simulation. A statistical analysis is performed using the 
 total transverse mass distribution\, and the results are interpreted as up
 per limits on the production cross section times branching ratio.\nhttps:/
 /indico.ific.uv.es/event/8568/
LOCATION:1001-Primera-1-1-1 - Paterna. Seminario (Universe)
URL:https://indico.ific.uv.es/event/8568/
END:VEVENT
BEGIN:VEVENT
SUMMARY:#Student Seminar:  Implications of flavor symmetries for baryon-nu
 mber-violating nucleon decay
DTSTART;VALUE=DATE-TIME:20260422T130000Z
DTEND;VALUE=DATE-TIME:20260422T134500Z
DTSTAMP;VALUE=DATE-TIME:20260514T225300Z
UID:indico-event-8560@indico.ific.uv.es
DESCRIPTION:Speakers: Arnau Bas i Beneito (Institut de Física Corpuscular
  (IFIC\, CSIC))\nBaryon number is an accidental symmetry of the Standard M
 odel\, and its violation would be a clear sign of new physics\, with nucle
 on decay providing its most striking experimental signature. In this semin
 ar\, I will discuss how flavor symmetries can guide the study of baryon-nu
 mber-violating (BNV) effects in the SMEFT. After briefly reviewing the mai
 n nucleon-decay signatures and the relevant dimension-six operators\, I wi
 ll present their classification under different flavor-symmetry assumption
 s and the resulting phenomenology. In particular\, I will show that in som
 e flavor scenarios the interplay with tiny neutrino masses allows proton-d
 ecay bounds to be compatible with BNV scales in the multi-TeV range. I wil
 l also comment on simple UV completions.\nhttps://indico.ific.uv.es/event/
 8560/
LOCATION:1001-Primera-1-1-1 - Paterna. Seminario (Universe)
URL:https://indico.ific.uv.es/event/8560/
END:VEVENT
BEGIN:VEVENT
SUMMARY:#Student Seminar: Analogue Gravity in Bose Einstein Condensates
DTSTART;VALUE=DATE-TIME:20260422T134500Z
DTEND;VALUE=DATE-TIME:20260422T143000Z
DTSTAMP;VALUE=DATE-TIME:20260514T225300Z
UID:indico-event-8559@indico.ific.uv.es
DESCRIPTION:Speakers: Daniel Penalver Mares (IFIC (UV-CSIC))\nBose Einstei
 n Condensates undergoing transonic motion have been shown to present a spo
 ntaneous emission of phonons. In this talk we will see how this is derived
  and why this process is analogue to Hawking Radiation. In order to unders
 tand the physical idea behind this\, we will study a simple one-dimensiona
 l geometry with a stepwise homogeneous flow which allows for a fully analy
 tical treatment.\nhttps://indico.ific.uv.es/event/8559/
LOCATION:1001-Primera-1-1-1 - Paterna. Seminario (Universe)
URL:https://indico.ific.uv.es/event/8559/
END:VEVENT
BEGIN:VEVENT
SUMMARY:#Student Seminar: Two-dimensional semiclassical black holes: evapo
 ration\, backreaction\, and singularity resolution
DTSTART;VALUE=DATE-TIME:20260422T143000Z
DTEND;VALUE=DATE-TIME:20260422T151500Z
DTSTAMP;VALUE=DATE-TIME:20260514T225300Z
UID:indico-event-8561@indico.ific.uv.es
DESCRIPTION:Speakers: Javier Marañon González (IFIC (UV-CSIC))\nQuantum 
 field theory in curved spacetime provides a powerful framework to study qu
 antum effects in cosmology and black hole physics. Unlike in flat spacetim
 e QFT\, curvature requires renormalization already at the level of the fre
 e theory. This yields a renormalized stress-energy tensor for quantum fiel
 ds on a given background\, capturing effects such as Hawking radiation of 
 black holes and particle production in expanding universes. The next step 
 is to include the effect of quantum fields on spacetime geometry\, the so-
 called backreaction problem.\n\nIn this seminar\, I introduce this framewo
 rk\, highlight its main challenges\, and present effective two-dimensional
  black hole models that address them while retaining the essential quantum
  features. In two dimensions\, the renormalized stress-energy tensor can b
 e written in closed form in terms of the metric\, transforming the semicla
 ssical equations into a second-order system of PDEs. This makes it possibl
 e to study the full dynamics\, including backreaction.\nhttps://indico.ifi
 c.uv.es/event/8561/
LOCATION:1001-Primera-1-1-1 - Paterna. Seminario (Universe)
URL:https://indico.ific.uv.es/event/8561/
END:VEVENT
BEGIN:VEVENT
SUMMARY:#Student Seminar: Is dark matter hiding in plain sight?
DTSTART;VALUE=DATE-TIME:20260423T130000Z
DTEND;VALUE=DATE-TIME:20260423T150000Z
DTSTAMP;VALUE=DATE-TIME:20260514T225300Z
UID:indico-event-8549@indico.ific.uv.es
DESCRIPTION:Speakers: Aurelio Amerio (IFIC)\nRoughly 85% of all matter in 
 the universe doesn't seem to interact with electromagnetic radiation\, mak
 ing it dark and seemingly invisible\; thus\, we call it dark matter. Yet\,
  we have a wealth of gravitational and cosmological phenomena pointing to 
 its existence—phenomena that are not entirely and satisfactorily explain
 ed by alternative theories.\n\nIf dark matter annihilates or decays into S
 tandard Model particles\, it could produce a detectable gamma-ray signal\,
  and gamma rays will be the protagonists of this talk.\n\nIn this seminar\
 , I will talk about how we have managed to NOT find dark matter signals 
 across a broad series of searches. We will explore some of the most compel
 ling targets in the gamma-ray band\, including the Galactic Center\, dark 
 matter subhalos\, and the unresolved gamma-ray background.\n\nThe low-hang
 ing fruit has already been picked\, and we didn't manage to find dark matt
 er where we looked for it first. Today\, I will show you how advanced mach
 ine learning and statistical techniques can extract additional information
  where seemingly there is only noise. Maybe dark matter is hiding in plai
 n sight\, but what more do we need to do to actually see it?\nhttps://indi
 co.ific.uv.es/event/8549/
LOCATION:1001-Primera-1-1-1 - Paterna. Seminario (Universe)
URL:https://indico.ific.uv.es/event/8549/
END:VEVENT
BEGIN:VEVENT
SUMMARY:#StudentSeminar:Electronic and optical properties of semiconductin
 g materials: A first-principles approach
DTSTART;VALUE=DATE-TIME:20260427T130000Z
DTEND;VALUE=DATE-TIME:20260427T143000Z
DTSTAMP;VALUE=DATE-TIME:20260514T225300Z
UID:indico-event-8564@indico.ific.uv.es
DESCRIPTION:Speakers: Jorge Cervantes Villanueva (UV)\nTítulo: "Electroni
 c and optical properties of semiconducting materials: A first-principles a
 pproach"\n\nAbstract: "The study of crystalline semiconductors remains a c
 ornerstone of modern materials science\, driven by the demand for novel op
 toelectronic devices and emerging quantum technologies. To model these mat
 erials accurately\, researchers rely on ab initio (first-principles) calcu
 lations. By solving the Many-Body Schrödinger equation using only fundame
 ntal physical constants and atomic structures (without empirical fitting p
 arameters) this approach provides a predictive\, unbiased description of m
 aterial properties that can be directly validated by experiments.\n\nIn th
 is seminar\, I will provide a pedagogical overview of the state-of-the-art
  theoretical frameworks used to determine the electronic and optical prope
 rties of semiconductors. We will discuss the transition from ground-state 
 properties via Density Functional Theory (DFT) to quasiparticle excitation
 s using the GW approximation\, and finally\, the description of excitonic 
 effects through the Bethe-Salpeter Equation (BSE). Furthermore\, we will t
 ouch upon non-equilibrium optical properties by exploring the equation of 
 motion for the density matrix. By bridging theoretical foundations with re
 al-world results\, this seminar aims to demonstrate the powerful capabilit
 y of first-principles methods to predict the behavior of semiconducting ma
 terials."\n \n\nJoin online:  https://uv-es.zoom.us/j/94847718912\nhttps
 ://indico.ific.uv.es/event/8564/
LOCATION:1001-Primera-1-1-1 - Paterna. Seminario (Universe)
URL:https://indico.ific.uv.es/event/8564/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Daniel Conde Villatoro:  Interpretability in machine learning mode
 ls using symbolic regression: Angular coefficients in Z production
DTSTART;VALUE=DATE-TIME:20260428T133000Z
DTEND;VALUE=DATE-TIME:20260428T153000Z
DTSTAMP;VALUE=DATE-TIME:20260514T225300Z
UID:indico-event-8582@indico.ific.uv.es
DESCRIPTION:Speakers: Daniel Conde Villatoro (Instituto de Física Corpusc
 ular)\nComputing angular coefficients for W and Z bosons at the LHC is com
 putationally expensive and often yields results that are unwieldy to use a
 nalytically. In this talk\, I show how symbolic regression offers a practi
 cal alternative: lightweight analytical formulas derived directly from NLO
  simulation data. Using the PySR package\, we recover closed-form expressi
 ons for the full set of angular coefficients as functions of transverse mo
 mentum\, rapidity\, and invariant mass. Beyond efficiency\, these expressi
 ons shed light on the underlying physics in a way that neural networks can
 not. Our results demonstrate that symbolic regression can produce accurate
  and generalisable expressions that match Monte Carlo predictions within u
 ncertainties\, while preserving interpretability and providing insight int
 o the kinematic dependence of angular observables.\nhttps://indico.ific.uv
 .es/event/8582/
LOCATION:1001-Primera-1-1-1 - Paterna. Seminario (Universe)
URL:https://indico.ific.uv.es/event/8582/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Boiling down Neutrinos: Cosmological First-Order Phase Transitions
  in Radiative Mass Models
DTSTART;VALUE=DATE-TIME:20260430T130000Z
DTEND;VALUE=DATE-TIME:20260430T150000Z
DTSTAMP;VALUE=DATE-TIME:20260514T225300Z
UID:indico-event-8589@indico.ific.uv.es
DESCRIPTION:Speakers: Francesco Paolo Di Meglio (IFIC Valencia and Univers
 itat de València)\nSymmetries are the daily bread of modern particle phys
 icists. In a variety of scenarios their breaking is associated with the fo
 rmation and expansion of bubbles of true vacuum in what is called a first
  order phase transition. In this context\, Electroweak Baryogenesis\, a me
 chanism proposed over 40 years ago\, takes advantage of Electroweak symmet
 ry breaking and offers a way to address the baryon asymmetry of the unive
 rse\, as all three Sakharov conditions can be realised on the walls of sa
 id bubbles. Additionally\, the dynamics of bubble collisions could provide
  interesting gravitational waves signals that could be detected in the yea
 rs to come. \n\nAlthough the Standard Model contains all required ingred
 ients\, it has long been established that the electroweak phase transition
  does not proceed via nucleation of bubbles\, rather it is a smooth crosso
 ver. Additionally\, the smallness of the CP violation in SM is insufficien
 t to account for the observed baryon asymmetry. \n\nExtending the SM sca
 lar sector can\, however\, drastically modify the dynamics of symmetry b
 reaking and provide a richer vacuum structure. In this talk\, I will ana
 lyse one such extension\, the Zee model\, first proposed to generating ne
 utrino masses at loop level via the introduction of additional scalar degr
 ees of freedom. We shall show how in this framework the electroweak phase 
 transition actually proceeds via bubble nucleation\, and how it could be s
 trong enough to generate the observed baryon asymmetry of the universe. \
 nhttps://indico.ific.uv.es/event/8589/
LOCATION:1001-Primera-1-1-1 - Paterna. Seminario (Universe)
URL:https://indico.ific.uv.es/event/8589/
END:VEVENT
BEGIN:VEVENT
SUMMARY:Machine Learning the Universe
DTSTART;VALUE=DATE-TIME:20260515T130000Z
DTEND;VALUE=DATE-TIME:20260515T150000Z
DTSTAMP;VALUE=DATE-TIME:20260514T225300Z
UID:indico-event-8616@indico.ific.uv.es
DESCRIPTION:Speakers: Androniki Dimitriou\nGravitational waves have opened
  a new window into studying our universe. Yet many of these signals are bu
 ried under noise in detection\, making them difficult to be detected with 
 traditional methods. In this talk\, we explore how we can use Machine Lear
 ning (ML) to uncover these faint signals.\n\nUsing data from space-based d
 etectors like LISA and ground-based ones like LIGO\, we apply ML to recons
 truct gravitational-wave backgrounds from distant blackhole mergers and ne
 w-physics sources like cosmic strings. These new approaches are not only m
 ore flexible than traditional techniques but also faster and better suited
  to the challenges of modern gravitational-wave astronomy.\nhttps://indico
 .ific.uv.es/event/8616/
LOCATION:1001-Primera-1-1-1 - Paterna. Seminario (Universe)
URL:https://indico.ific.uv.es/event/8616/
END:VEVENT
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