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ALPS2020 -- Fifth Alpine LHC Physics Summit

13–18 Apr 2020
UZ Obergurgl
Europe/Zurich timezone

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Contribution List

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13. Dark sector searches at Belle II
Ida Peruzzi (Laboratori Nazionali di Frascati dell'INFN)

The Belle II experiment at the SuperKEKB energy-asymmetric $e^+ e^-$ collider
is a substantial upgrade of the B factory facility at the Japanese KEK laboratory.
The design luminosity of the machine is $8\times 10^{35}$ cm$^{-2}$s$^{-1}$ and
the Belle II experiment aims to record 50 ab$^{-1}$ of data, a factor of 50 more
than its predecessor. During 2018, the machine has completed a...
18. Latest results from the NA62 experiment at CERN.
Patrizia Cenci (INFN Perugia (IT))

The NA62 experiment at the CERN SPS is designed to measure the branching ratio of the K+→π+vv ̅decay, one of the best candidates to reveal indirect effects of new physics at the highest mass scales with a very precisely predicted branching ratio of less than 10-10.
NA62 took data in 2016-2018.
Data statistics collected in 2016 allowed NA62 to reach the Standard Model sensitivity for K+→π+vv...
16. Massless composite vector particles
Vincenzo Afferrante (University of Graz)

Brout-Englert-Higgs physics is an integral part of many BSM scenarios,
such as grand-unified theories, partial compositeness models and (broken) supersymmetric theories. Recent analytic results, based on manifest gauge invariance, suggest that in these models one has to reconsider setting the physical spectrum equal to the elementary one.

We illustrate this by considering a toy model for...
14. Measurement of charm-mixing parameter y_CP in D0 → KSω decays at Belle
Dr Minakshi Nayak (Tel Aviv University)

Within the Standard Model, $CP$-violation in the charm system is very small, making it a good probe for new physics. The observable $y_{CP}$ parameterizes charm-mixing in $D^0$ decays to $CP$-eigenstates and is sensitive to $CP$-violation in the charm system. The current world average value of $y_{CP}$ is $(0.715\pm 0.111)\%$, where the precision mostly comes from $CP$-even decays of $D^0$....
22. Neutrino Non-Standard Interactions: Complementarities Between LHC and Oscillation Experiments
Dr SUDIP JANA (Max-Planck-Institut für Kernphysik)

Physics beyond the standard model may induce significant deviations in the couplings involving neutrinos generally referred to as Non-Standard neutrino Interactions (NSI). We present a complementarity study between LHC and oscillation experiments to probe NSIs. We perform the analyses in a simplified model and an illustrative ultraviolet completion. The present and high-luminosity LHC...
20. New results from the CUORE experiment
Marco Vignati (INFN - National Institute for Nuclear Physics)

The Cryogenic Underground Observatory for Rare Events (CUORE) is the first bolometric experiment searching for neutrinoless double-beta (0νββ) decay that has been able to reach the one-ton scale. The detector, located at the Laboratori Nazionali del Gran Sasso in Italy, consists of an array of 988 TeO$_{2}$ crystals arranged in a compact cylindrical structure of 19 towers. Following the...
7. News on the CLIC physics potential
CLICdp Collaboration

The Compact Linear Collider (CLIC) is a TeV-scale high-luminosity linear electron-
positron collider under study at CERN. For an optimal exploitation of its physics
potential, CLIC is foreseen to be built and operated in three stages, at centre-of-
mass energies of 380 GeV, 1.5 TeV and 3 TeV, respectively, for a site length ranging
from 11 km to 50 km. Each of the three energy stages adds...
26. NEWS-G: Search for Light Dark Matter with a Spherical Proportional Counter
Patrick Knights (University of Birmingham)

The NEWS-G collaboration is searching for light dark matter candidates using a spherical proportional counter. Access to the mass range from 0.1 to 10 GeV is enabled by the combination of low energy threshold, light gaseous targets (H, Ne), and highly radio-pure construction. The current status of the experiment will be presented, along with the first NEWS-G results obtained with SEDINE, a 60...
9. Predictions in baryon and Higgs sectors from intrinsic quantum mechanics - on neutral pentaquarks and gauge boson couplings
Ole Lynnerup Trinhammer (Technical University of Denmark)

I introduce an idea of intrinsic quantum mechanics where the gauge groups SU(3), SU(2) and U(1) share a common origin in an intrinsic U(3) configuration space for baryons. I present neutral pentaquark predictions in the baryon spectrum and I present Higgs to gauge boson couplings deviating by three percent in signal strengths from standard model predictions. The deviation originates in the...
17. Quark masses and mixings from a minimal parameterisation of new physics
Prof. Reinhard Alkofer (U. Graz)

The simplest possible parameterization of new physics that results in an ultraviolet complete gauge-Yukawa sector of the Standard Model is explored. To this end, an antiscreening contribution to the beta function of the Abelian hypercharge gauge coupling, and a flavor-universal, antiscreening contribution to the beta functions of the Yukawa couplings are added. These two free parameters give...
1. Recent results of light hadron spectroscopy from BESIII
Zhang Jingzhi

With the world’s largest sample of J/psi 1.3 billion events accumulated at the BESIII detector offers a unique opportunity to study light hadron spectroscopy and decays. In this presentation, recent results of the light hadron physics at BESIII will be highlighted. The BESIII experiment has made significant progresses on the light hadron spectroscopy in the J/psi decays, including the...
24. Recent results on direct dark matter search with the XENON experiment
Dr Carla Macolino (IJCLab - Orsay)

The recent results on direct dark matter search with the
XENON1T detector are discussed: the WIMP scenario as well as other dark
matter hypotheses have been constrained with unprecedented sensitivity.
XENONnT, the next phase of the XENON project, will probe dark matter
with a factor 10 higher sensitivity than XENON1T. The current status of
XENONnT assembly and commissioning is presented.
3. Search for BNV and LNV processes at BESIII
Wang Dayong (University of Beijing)

The observed matter-antimatter asymmetry in the universe composes a serious challenge to our understanding of nature. BNV decay has been searched in many experiments to understand this large-scale observed fact. In the case of e+e- collision, few experiments are performed. Here we proposed to search BNV and LNV with currently the world largest J/psi data sets in e+e- collision experiment. The...
11. Semileptonic and missing energy decays at Belle II
Ida Peruzzi (Laboratori Nazionali di Frascati dell'INFN)

The Belle II experiment, located at the SuperKEKB accelerator complex near Tokyo in Japan, has started
its 2019 run to collect collision events at large instantaneous luminosities. In this presentation we
show results from studying missing energy signatures, such as leptonic and semileptonic B meson decays:
We report studies on re-measuring important standard candle processes, such as...
23. The CP nature of the Higgs top Yukawa coupling
Henning Bahl (Deutsches Elektronen-Synchrotron DESY)

While the CP nature of the Higgs vector-boson interaction has already been tightly constrained, the CP properties of the Higgs top Yukawa coupling are still comparably unexplored. In this talk, we report on a fit of a general top Yukawa model to all relevant LHC measurements. In addition to modifying the Higgs top-quark interaction, we also allow for new physics contributions to the couplings...
6. The LHCb upgrades
LHCb Collaboration

The LHCb detector is currently being upgraded to be able to take data at higher luminosities and with greater efficiency in Run3. This involves replacement of many subdetector systems, including the vertex detector, upstream tracker, the photodetectors of the ring-imaging Cherenkov detectors, and the downstream tracker. Equally important will be a complete redesign of the data-acquisition...
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