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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:20201028T091400Z
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:20201028T091400Z
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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