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Partikeldagarna 2018 (Lundmarksalen) + Discussion Session on the Swedish Input to the European Strategy of Particle Physics (Sal A)

16–18 Oct 2018
Lund university
Europe/Stockholm timezone
See you at Partikeldagarna in Lund on Tuesday!

Contribution List

52 out of 52 displayed
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  1. 7. The Next Generation Radio Detector for Extermely High Energy Neutrinos (12'+3')
    Allan Hallgren (Uppsala University)
    16/10/2018, 10:15

    Neutrinos in the Energy range above 10 PeV will provides important information on very high energy processes in the universe and the origin of the highest energy Cosmic rays. Additionally neutrino properties can be studied. The detection of these neutrinos is challenging, a large volume of detector material needs to be monitored. The economically feasible method is detection of radio signals...

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  2. 15. Deciphering the next supernova using neutrinos (12'+3')
    Dr Erin O'Sullivan (Stockholm University)
    16/10/2018, 10:30

    Supernovae are the spectacular end in the lives of massive stars. Neutrinos are an important player in the explosion and account for 99% of the explosion energy. IceCube, a detector embedded in the ice at the South Pole, will make a precision measurement of the neutrino rate from the next galactic supernova. This measurement will give us an unprecedented look at the inner structure of the...

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  3. 16. The PTOLEMY dark matter and relic neutrino detection project (12'+3')
    Carlos de los Heros (Uppsala University)
    16/10/2018, 10:45

    The existence of relic neutrinos from the big bang is a well established fact in any cosmological model. Since they are expected to currently have an energy of a few milielectronvolts, their detection is a huge technological challenge. The PTOLEMY detector is a proposal to directly detect the cosmic neutrino background by looking at the very rare electrons emitted in the inverse beta decay of...

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  4. 21. A Search for Magnetic Monopoles with IceCube (12'+3')
    Alexander Burgman (Uppsala University)
    16/10/2018, 11:00

    Magnetic monopoles are predicted to exist in many extensions and unifications of the Standard Model of particle physics. A magnetic monopole passing through the IceCube detector array would be readily detected via its characteristic light output. In this talk I will report on the progress of the search for magnetic monopoles ongoing in the Uppsala University IceCube group.

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  5. 25. Cosmic Neutrinos from a Blazar (12'+3')
    Chad Finley
    16/10/2018, 11:15

    This summer IceCube announced the first evidence of a cosmic source of
    high-energy neutrinos. A rare, high-energy neutrino event detected on
    2017 Sept. 22 was reported by IceCube in a public alert that led to
    extensive follow-up observations across the electromagnetic spectrum. A
    tantalizing association was found with a blazar, an active galaxy where
    one of the jets from the central black hole...

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  6. 29. Freeze-out and freeze-in relic density for a light vector mediator (12'+3')
    Isabelle John (Lund University)
    16/10/2018, 11:30

    In collider experiments, such as the Large Hadron Collider (LHC), an unknown particle could be produced from a pair of quarks in proton-proton collisions. In simplified dark matter (DM) models, this particle could then decay either into WIMP (Weakly-Interacting Massive Particles) dark matter or into Standard Model (SM) particles, acting as a mediator between ordinary matter and dark matter....

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  7. 43. Challenges in data processing and handling at the SKA telescope
    Prof. Anna Scaife (University of Manchester)
    16/10/2018, 11:45
  8. 31. Insights on the particle acceleration at the core of Centaurus A (12'+3')
    Yvonne Becherini (Linnaeus University)
    16/10/2018, 13:45

    Centaurus A is the nearest radio-galaxy and an excellent laboratory to study the origin of particle acceleration responsible for the High-Energy (HE) and Very-High-Energy (VHE) gamma-ray emission in Active Galactic Nuclei. The H.E.S.S. and Fermi-LAT collaborations have together recently published the most up-to-date Spectral Energy Distribution of its core emission. I will present these recent...

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  9. 30. Monitoring the energetic Universe with the ALTO gamma-ray observatory (12'+3')
    Yvonne Becherini (Linnaeus University)
    16/10/2018, 14:00

    Imaging Atmospheric Cherenkov Telescopes together with the Fermi-LAT satellite have, in the last 15 years, unveiled how rich the Universe is in powerful mechanisms able to accelerate particles which then produce High Energy (HE) and Very High Energy (VHE) gamma-rays. Some of the gamma-ray emitting sources are found to be steady with respect to the sensitivity of the instruments, while many of...

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  10. 13. The ESSnuSB neutrino beam and its accumulator (12'+3')
    Dr Ye Zou (Department of Physics and Astronomy, Uppsala University)
    16/10/2018, 14:15

    The 2.0 GeV, 5 MW proton linac for the European Spallation Source, ESS, will have the capacity to send extra pulses to a neutrino target, giving an excellent opportunity to produce an unprecedented high performance neutrino beam, the ESS neutrino Super Beam, ESSnuSB. The proton pulse power for the neutrino target can be as high as 5 MW, which will be the world’s most powerful neutrino source,...

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  11. 9. MAX IV - status and brief inside view (12'+3')
    Bernhard Meirose (MAX IV)
    16/10/2018, 14:30

    The MAX IV Laboratory in Lund is the largest and most ambitious Swedish investment in national research infrastructure. Hosted by Lund University, MAX IV is the brightest source of x-rays worldwide. In this talk I give a brief overview of the status of the laboratory, giving also an inside view of the daily work that is done to keep the linear accelerator and storage rings running 24 hours a...

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  12. 6. Space Charge Tracking in Accelerators (12'+3')
    Mr Benjamin Folsom (European Spallation Source; Lund University)
    16/10/2018, 14:45

    The interactions between charged particles are derived from the relativistic Lienard-Wiechert four-potential. This expression is usually broken into field components and solved statically (Coulombic). However, to study high-intensity, high-precision beams, one can to simulate bunch dynamics by incorporating the full potential into a Lorentz-covariant Hamiltonian.

    Methods are shown for...

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  13. 33. Building and test of ITk Strip modules (12'+3')
    Geoffrey Mullier (Lund University (SE))
    16/10/2018, 15:00

    The current Inner Detector (ID) of the ATLAS experiment, despite its excellent current performance, will not meet the harsh requirements of the High Luminosity-LHC upgrade. A newly designed inner detector Inner Tracker (ITk) composed uniquely of semi-silicon pixels and strip detectors will be installed from 2024 to 2026. This contribution summarizes the activities within the different...

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  14. 20. The SHIFT project (12'+3')
    Sara Strandberg (Stockholm University (SE))
    16/10/2018, 15:45

    The presentation will summarize the scope and status of the SHIFT project, which is a collaboration between experimental and theoretical particle physicists at Chalmers, Stockholm and Uppsala. The focus is to search for top partners that can protect the mass of the Higgs boson from large quantum corrections. We study possible signatures of such top partners and search for them using data from...

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  15. 24. Charged Higgs searches in ATLAS (12'+3')
    Max Fredrik Isacson (Uppsala University (SE))
    16/10/2018, 16:00

    It is universally accepted that the Standard Model (SM) is incomplete, and many
    models that describe physics Beyond the Standard Model (BSM) has by necessity
    an extended Higgs sector. The smallest extensions add one additional Higgs
    doublet to the one already present in the SM. These models are collectively
    called Two Higgs Doublet Models (2HDM). The scalar particle observed in 2012 is
    then...

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  16. 23. Combination of searches for Higgs boson pairs in pp collisions at 13 TeV with the ATLAS experiment (12'+3')
    Petar Bokan (Uppsala University (SE), Georg-August-Universitaet Goettingen (DE))
    16/10/2018, 16:15

    This report presents a combination of searches for Higgs boson pairs using up to 36.1 fb$^{−1}$ of proton-proton collision data at a centre-of-mass energy $\sqrt{s}=13$ TeV recorded with the ATLAS detector at the LHC. The combination is performed using three analyses searching for the $HH\rightarrow b\bar{b}b\bar{b}$, $HH\rightarrow b\bar{b}\tau^{+}\tau^{-}$ and $HH\rightarrow...

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  17. 32. Results from a search for dijet resonances using only trigger-level jets at ATLAS (12'+3')
    Per Alexander Ekman (Lund University (SE))
    16/10/2018, 16:30

    The LHC delivers an unprecedented number of proton-proton collisions to its experiments. In kinematic regimes first studied by earlier generations of collider experiments, the limiting factor to more deeply probing for new physics can be the online and offline computing, and offline storage, requirements for the recording and analysis of this data. In this contribution, we describe a strategy...

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  18. 10. Optimization Procedure in the Search for Spin-0 Supersymmetric Partner of Top Quark Using 120 fb$^{-1}$ of $\sqrt{s} = 13$ TeV $pp$ Collisions using the ATLAS Detector (12'+3')
    Stefio Yosse Andrean (Stockholm University (SE))
    16/10/2018, 16:45

    By offering a solution to the long-standing hierarchy problem, supersymmetry becomes one of the most searched extension to the Standard Model (SM) in the field of experimental high energy physics. Supersymmetry introduces each SM particle with a supersymmetric partner which has identical quantum number but a half-unit difference in spin. Supersymmetry can also answer the existence of dark...

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  19. 8. Search for new physics with taus (12'+3')
    Shi Qiu (Lund University (SE))
    16/10/2018, 17:00

    The generation mechanism of neutrino mass is one of the major problems remained in the Standard Model. One of the possible solutions is to introduce exotic Higgs bosons which generate neutrino mass through the Seesaw mechanism. The SSDiLep group works on studying the doubly-charged Higgs bosons, predicted in a large variety of BSM models such as left-right symmetric model, Higgs triplet models...

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  20. 35. ACCU report (15')
    Sara Strandberg, Sara Strandberg (Stockholm University (SE))
    17/10/2018, 08:30
  21. 36. IPPOG report (15')
    Jonas Strandberg (KTH Royal Institute of Technology (SE))
    17/10/2018, 08:45
  22. 37. IUPAP report (15')
    Johan Rathsman
    17/10/2018, 09:00
  23. 38. ECFA report (15')
    David Milstead
    17/10/2018, 09:15
  24. 39. Council week (15')
    Kerstin Jon-And
    17/10/2018, 09:30
  25. 40. High-school visits at CERN (15')
    Emelie Sandved, Linn Enroth, Mats Persson
    17/10/2018, 09:45
  26. 41. VR+RFI (20')
    Per Karlsson
    17/10/2018, 10:00
  27. 42. Discussion (10')
    17/10/2018, 10:20
  28. 34. Summary of Swedish physics-analysis activities in ATLAS (20+5)
    Ruth Pottgen (Lund University (SE))
    17/10/2018, 11:00
  29. 45. Summary of Swedish upgrade activities in ATLAS (20+5)
    Christian Ohm (KTH Royal Institute of Technology (SE))
    17/10/2018, 11:25
  30. 4. Lund ALICE summary (12'+3')
    Peter Christiansen (Lund University (SE)), David Silvermyr (Lund University (SE))
    17/10/2018, 11:50

    Summary of activities in the Lund ALICE group.

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  31. 3. Exploring sub-GeV Dark Matter with LDMX (12'+3')
    Lene Kristian Bryngemark (Lund University (SE))
    17/10/2018, 12:05

    The origin and observed abundance of Dark Matter can be explained elegantly by the thermal freeze-out mechanism, leading to a preferred mass range for Dark Matter particles in the ~MeV-TeV region. The GeV-TeV mass range is being explored intensively by a variety of experiments searching for Weakly Interacting Massive Particles. The sub-GeV region, however, in which the masses of the building...

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  32. 27. Complementarity in Dark Matter Searches (12'+3')
    Catena Riccardo (Chalmers University of Technology )
    17/10/2018, 12:20

    I will report on recent research activities conducted at Chalmers in the field of dark matter particle phenomenology. The dark matter particle phenomenology group at Chalmers performs research on the complementarity of different dark matter search strategies in order to maximise the amount of information which can be extracted from the outcome of present and future dark matter search...

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  33. 28. Consequences of a XENONnT/LZ signal for the LHC and thermal dark matter production (12'+3')
    Martin Krauss
    17/10/2018, 12:35

    The discovery of dark matter (DM) at XENONnT or LZ would place constraints on DM particle mass and coupling constants. It is interesting to ask when these constraints can be compatible with thermal production of DM. We address this question within the most general set of renormalizable models that preserve Lorentz and gauge symmetry, and that extend the standard model by one DM candidate of...

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  34. 2. INSIGHTS: Learning to Learn (12'+3')
    Mr Nathan Daniel Simpson (Lund University (SE))
    17/10/2018, 13:50

    INSIGHTS (International Training Network of Statistics for High Energy
    Physics and Society) is an Innovative Training Network (ITN) designed to
    train a group of PhD students in statistical methods and machine learning.
    Application of these techniques to particle physics and to things such as
    finance and decision making is also a key part of the network. This brief
    talk gives an introduction to...

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  35. 22. Tuning of Monte Carlo Event Generators (12'+3')
    Leif Gellersen (Lund University)
    17/10/2018, 14:05

    Monte Carlo Event Generators are important tools to understand the physics of particle colliders. They play a key role in both the analysis of data collected by experiments and the design of new colliders and detectors. Due to the complexity of particle collisions and the limited ability of perturbative QCD to describe the low energy behavior of partons, we need phenomenological models to...

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  36. 17. Color Matrix Element Corrections in Herwig (12'+3')
    Malin Sjodahl (Lund University)
    17/10/2018, 14:20

    We investigate the effects of keeping the full color structure for parton emissions in parton showers for both LEP and LHC. This is done within the Herwig 7 dipole shower. The subleading Nc terms are included as color matrix element corrections to the splitting kernels by evolving an amplitude-level density operator and correcting the radiation pattern for each parton multiplicity, up to a...

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  37. 18. QCD multiplet bases with arbitrary parton ordering (12'+3')
    Johan Thorén (Lund University)
    17/10/2018, 14:35

    We have developed an algorithm for recursively constructing orthogonal multiplet bases for the color space of QCD, for any order of partons and any Nc. The basis vectors can be used to calculate Wigner 6j coefficients. These coefficients offer a method of using multiplet bases without resorting to the explicit expressions of the basis vectors, which lead to a significant speed-up compared to...

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  38. 14. Constraining EFT operators in the top sector (12'+3')
    Nabila Shaikh
    17/10/2018, 14:50

    The current model for particle physics, the SM, is very successful. However, there are many questions that are not answered by it and therefore the search for physics beyond the SM is one of the main focus of particle physicists. There are several searches for particular beyond the SM theories like supersymmetry. Experiments have unfortunately not found any of the new particles that are...

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  39. 44. CERN research plans from the accelerator perspective
    Dr Yannis Papaphilippou (CERN), Yannis Papaphilippou (CERN)
    17/10/2018, 15:35
  40. 19. Towards solving the proton spin puzzle (12'+3')
    Gunnar Ingelman
    17/10/2018, 16:35

    The fact that the spins of the quarks in the proton, as measured in deep inelastic lepton scattering, only add up to about 30% of the spin of the proton is still not understood after 30 years. We show that our newly developed model for the quark and gluon momentum distributions in the proton, based on quantum fluctuations of the proton into baryon-meson pairs convoluted with Gaussian momentum...

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  41. 11. Electromagnetic finite size effects to the hadronic vacuum polarisation (12'+3')
    Mr Nils Hermansson Truedsson (Lund University)
    17/10/2018, 16:50

    One of the most precisely measured quantities in particle physics is the anomalous magnetic moment $a_{\mu}=(g_{\mu}-2)/2$, where $g_{\mu}$ is the deviation from the Dirac value $g_{\mu} = 2$. At present, there is roughly a $3\, \sigma$ discrepancy between the value of $a_{\mu}$ calculated in the Standard Model and that experimentally measured at Brookhaven, which could indicate physics beyond...

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  42. 12. IR fitness of the effective potential in the $\hbar$-expansion (12'+3')
    Mr Andreas Ekstedt (Uppsala university)
    17/10/2018, 17:05

    Perturbative calculations of the effective potential evaluated at a broken minimum, $ V_{\text{min}} $, are plagued by difficulties. Even though this quantity is physical, it is not straightforward to get a finite and gauge invariant result. In fact, the methods proposed to deal with these two issues are orthogonal in their approaches. Gauge dependence is dealt with through the $ \hbar...

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  43. 47. Strategy overview
    David Anthony Milstead (Stockholm University (SE)), David Milstead
    18/10/2018, 10:00
  44. 48. BSM
    Caterina Doglioni (Lund University (SE)), Christian Ohm (KTH Royal Institute of Technology (SE)), Rikard Enberg (Uppsala University)
    18/10/2018, 10:15
  45. 49. SM
    Leif Lönnblad (Lund University (SE)), Rebeca Gonzalez Suarez (Uppsala University (SE))
    18/10/2018, 10:35
  46. 51. Heavy ions
    David Silvermyr (Lund University (SE)), Leif Lönnblad (Lund University (SE)), Peter Christiansen (Lund University (SE))
    18/10/2018, 10:55
  47. 53. Neutrinos
    Chad Finley, Roman Pasechnik
    18/10/2018, 11:15
  48. 50. Detectors
    Bengt Lund-Jensen (KTH Royal Institute of Technology (SE)), Richard Brenner (Uppsala University (SE))
    18/10/2018, 11:50
  49. 52. Accelerators
    Roger Ruber (Uppsala University (SE)), Tord Johan Carl Ekelof (Uppsala University (SE))
    18/10/2018, 12:10
  50. 55. Discussion of draft and key points
    18/10/2018, 13:30
  51. 54. Discussions
  52. 46. Strategy overview