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SUMMARY:Physics Opportunities with the Gamma Factory
DTSTART;VALUE=DATE-TIME:20201130T070000Z
DTEND;VALUE=DATE-TIME:20201204T170000Z
DTSTAMP;VALUE=DATE-TIME:20200807T220200Z
UID:indico-event-214@indico.mitp.Uni-Mainz.DE
DESCRIPTION:The Gamma Factory (GF) initiative\, which is a part of the Phy
sics Beyond Colliders project\, proposes to develop novel research tools a
t CERN by producing\, accelerating and storing highly relativistic\, parti
ally stripped ion beams in the SPS and LHC storage rings. By exciting the
electronic degrees of freedom of the stored ions with lasers\, high energy
narrow-band\, fully polarized photon beams will be produced. Their intens
ities\, up to 1017 photons per second\, will be several orders of magnitud
e higher than those of the presently operating light sources in the partic
ularly interesting !-ray energy domain reaching up to 400 MeV\, inaccessib
le with FEL-based sources. Multiple unprecedented opportunities in atomic\
, nuclear\, particle and applied physics may be afforded by utilizing the
primary beams for spectroscopy of partially stripped ions circulating in t
he storage ring\, as well as well as by the use of the secondary high-ener
gy photon beams. The Gamma Factory provides a unique scenario of extending
the use of the existing CERN accelerator infrastructure\, going beyond it
s design goals\, and allowing to open new cross-disciplinary research doma
ins. It may enable ground breaking experiments in spectroscopy and novel w
ays of testing fundamental symmetries of nature\, expand the reach of QCD
tests\, help produce unusual nuclear isotopes and isomers\, and open new w
ays to address the high energy frontier of the accelerator technology with
polarized muon beams and the HEP precision frontier by providing ultra-pu
re\, CP-tagged neutrino beams.\n\nMITP topical workshop focus on these and
other ideas related to the physics reach of the Gamma Factory\, as well a
s synergies with the existing and future Mainz-based research topics and f
acilities. This Workshop is a continuation of previous study-group meeting
s (at CERN\, Krakow\, Orsay)\, which focused on the GF concept and the des
ign of the proof-of-principle experiment at SPS (currently under considera
tion by CERN). The Mainz workshop’s primary goal will be to identify and
discuss the physics highlights of the GF research program. It will thus h
ave a significantly broader appeal. The proposed time frame is from the Oc
tober 15 to the end of 2020\, avoiding major competing meetings in the rel
evant subject areas and facilitating participation of the local scientists
.\nhttps://indico.mitp.uni-mainz.de/event/214/
LOCATION:02.430 (Mainz Institute for Theoretical Physics\, Johannes Gutenb
erg University)
URL:https://indico.mitp.uni-mainz.de/event/214/
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SUMMARY:Uncertainties in Calculations of Nuclear Reactions of Astrophysica
l Interest
DTSTART;VALUE=DATE-TIME:20201207T070000Z
DTEND;VALUE=DATE-TIME:20201211T170000Z
DTSTAMP;VALUE=DATE-TIME:20200807T220200Z
UID:indico-event-215@indico.mitp.Uni-Mainz.DE
DESCRIPTION:Theoretical calculations of nuclear reactions provide critical
inputs for modeling of important astrophysical\, cosmological and experim
ental processes such as stellar nuclear burning\, big-bang nucleosynthesis
and neutrino detection. Precision calculations with well-justified uncert
ainty estimates are needed both for cross sections probed by ongoing and p
lanned experiments\, and for those that are probed imprecisely or not at a
ll by available experimental techniques. Nuclear theory is in a better pos
ition than ever to provide such calculations owing to (i) continuing devel
opments in effective field theories of quantum chromodynamics that enable
us to calculate low-energy reactions involving light nuclei and halo/clust
er nuclei in a systematically improvable framework\, and (ii) recent progr
ess in techniques for rigorous treatment of uncertainties in such calculat
ions.\n\nThis Topical Workshop will bring together experts working on (i)
formal developments in effective field theories of the strong interactions
and electroweak currents\, (ii) applications of such approaches to specif
ic nuclear reactions\, (iii) parameter estimation\, model selection\, opti
mization and statistical uncertainty analysis techniques applicable for nu
clear theory\, (iv) astrophysical models that need precise nuclear rates\,
(v) precision cross section measurements. The Workshop aims to help nucle
ar theorists prioritize important processes where precise calculations are
feasible\, forge collaborations to study them\, discuss both current prac
tice for uncertainty quantification in these reactions and how to improve
it\, identify the course of action that needs to be taken to push uncertai
nty quantification in calculations of nuclear reactions beyond the current
state of the art\, and learn what approaches will get buy-in from experim
entalists and astrophysicists.\nhttps://indico.mitp.uni-mainz.de/event/215
/
LOCATION:02.430 (Mainz Institute for Theoretical Physics\, Johannes Gutenb
erg University)
URL:https://indico.mitp.uni-mainz.de/event/215/
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SUMMARY:Precision Tests with Neutral-Current Coherent Interactions with Nu
clei
DTSTART;VALUE=DATE-TIME:20210607T060000Z
DTEND;VALUE=DATE-TIME:20210611T160000Z
DTSTAMP;VALUE=DATE-TIME:20200807T220200Z
UID:indico-event-196@indico.mitp.Uni-Mainz.DE
DESCRIPTION:IMPORTANT NOTICE: This workshop has been postponed from 2020.\
n\nNew event dates are: 7 - 11 June 2021 \nFor more information\, please
contact: CARBON2020@uni-mainz.de\n\nThe MESA facility at Mainz will test
the Standard Model (SM) and beyond with low-energy polarized electron scat
tering. One of the cornerstones of the experimental program at MESA\, the
P2 experiment\, is a ~1.8% measurement of the proton’s weak charge via e
lastic parity-violating electron scattering (PVES)\, resulting in a ~0.15%
determination of the weak mixing angle. PVES on C-12 is under discussion
as an additional avenue for several reasons. First of all\, such a measure
ment will serve as a calibration measurement to study the performance of t
he P2 experimental apparatus. Moreover\, a measurement on C-12 is expected
to enhance the physics output of PVES@MESA as it will probe a different i
sospin combination of effective 4-fermion operators. \n\nThe workshop is d
edicated to presenting results of presently ongoing studies and to identif
y those open problems which will have to be solved to ensure a successful
C-12 physics program at MESA. \n\nThe physics case of PVES on C-12 will be
discussed in a more general context: the coherent scattering of charged l
eptons and neutrinos with nuclei\, that is scattering without exciting the
nuclei or producing new particles. Such coherent interactions involving c
onserved currents provide a framework for setting up precision tests of th
e Standard Model at low energies\, e.g. by measuring weak charges of hadro
ns. Strong interaction effects cannot renormalize charges associated with
conserved currents. However\, precision requirements of modern experiments
are such that generally small effects due to non-conserved currents appea
ring at higher order in the fine structure constant 𝛼\, and symmetry br
eaking effects have to be taken into account when extracting those conserv
ed charges from actual experimental measurements. The challenges arising i
n precision calculations of the observables\, experimental techniques\, ex
posure to possible effects due to non-standard particles and interactions
allow us to cluster the main focus of the workshop\, the physics case of P
VES on C-12.\nhttps://indico.mitp.uni-mainz.de/event/196/
LOCATION:02.430 (Mainz Institute for Theoretical Physics\, Johannes Gutenb
erg University)
URL:https://indico.mitp.uni-mainz.de/event/196/
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SUMMARY:Elliptic Integrals in Fundamental Physics
DTSTART;VALUE=DATE-TIME:20210614T060000Z
DTEND;VALUE=DATE-TIME:20210618T160000Z
DTSTAMP;VALUE=DATE-TIME:20200807T220200Z
UID:indico-event-212@indico.mitp.Uni-Mainz.DE
DESCRIPTION:IMPORTANT NOTICE: This program has been postponed from 2020.\n
\nNew event dates are: 14 - 18 June 2021 \nFor more information\, plea
se contact: ELLIPT2020@uni-mainz.de\n\nScattering amplitudes are the build
ing blocks that allow us to compute predictions for high-energy experiment
s like the Large Hadron Collider (LHC) at CERN. Despite their importance\,
the computation of scattering amplitudes is a very complex task. As the n
umber of particles and/or the precision of the prediction increases\, one
faces an exponential growth in complexity and computations quickly become
intractable. At the same time\, the mathematical theory of the functions d
escribing generic scattering amplitudes needed for high precision is insuf
ficiently developed. Novel and powerful techniques are required in order t
o make precise predictions for collider experiments.\n\nWhile there was a
lot of progress over the last couple of years in understanding the mathema
tics of the functions that appear in scattering amplitude computations\, i
t is known that new classes of functions show up that are poorly understoo
d even from the mathematical side. Therefore\, these so-called ”elliptic
functions” are currently an active area of research not only in collide
r physics\, but also in seemingly disconnected areas like string theory an
d pure mathematics.\n\nThe aim of the topical workshop is to bring togethe
r particle physicists\, string theorists and mathematicians working on ell
iptic functions\, with the grand goal of advancing our understanding of el
liptic functions required to make precise predictions for future particle
physics experiments.\nhttps://indico.mitp.uni-mainz.de/event/212/
LOCATION:
URL:https://indico.mitp.uni-mainz.de/event/212/
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