Please note that the event "Dark matter direct detection via electromagnetic
multipoles" will start on 21 Jun 2023, 16:00 (Asia/Seoul).
It will take place at KIAS (1423 in building 1).
You can access the full event here:
https://indico.kias.re.kr/e/220
Description
-----------
Title: Dark matter direct detection via electromagnetic multipoles
Speaker: Merlin Reichard (Technical University of Munich)
Abstract: Albeit typically considered to be "dark", a dark matter particle can
interact electromagnetically with ordinary matter via higher multipole moments
generated at the quantum level. If dark matter particles are of Dirac nature,
only a millicharge, an electric- and magnetic dipole, and an anapole moment can
exist. If, however, it is a Majorana fermion---as naturally predicted by some
BSM theories such as the MSSM---the only allowed electromagnetic moment is the
anapole moment. After recapitulating the electromagnetic moments within
classical electrodynamics, I will discuss their role for neutral particles
within a relativistic field theory description. Further, I will discuss
generating these moments via pairs of scalar-fermion or vector-fermion at the
one-loop level within a toy model, focusing on the anapole moment of a Majorana
fermion. Here I will highlight the need for the background field method to
address the gauge-dependent triple gauge vertex adequately. Based on these
general results, I will present the predictions for the anapole moment of the
lightest neutralino within simplified models and the MSSM and contrast them
with limits from direct detection experiments. Finally, I will discuss the
model predictions for the dipole moments of a Dirac DM candidate within a toy
model and show that current-generation of direct detection experiments strongly
constrain the parameter space corresponding to a thermal relic.
--
Indico :: Email Notifier
https://indico.kias.re.kr/e/220BEGIN:VCALENDAR
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PRODID:-//CERN//INDICO//EN
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SUMMARY:Dark matter direct detection via electromagnetic multipoles
DTSTART;VALUE=DATE-TIME:20230621T070000Z
DTEND;VALUE=DATE-TIME:20230621T083000Z
DTSTAMP;VALUE=DATE-TIME:20230620T070000Z
UID:indico-event-220@xxxxxxxxxxxxxxxxx
DESCRIPTION:Speakers: Merlin Reichard (Technical University of Munich)\n\n
Title: Dark matter direct detection via electromagnetic multipolesSpeaker
: Merlin Reichard (Technical University of Munich)Abstract: Albeit typica
lly considered to be "dark"\, a dark matter particle can interact electrom
agnetically with ordinary matter via higher multipole moments generated at
the quantum level. If dark matter particles are of Dirac nature\, only a
millicharge\, an electric- and magnetic dipole\, and an anapole moment can
exist. If\, however\, it is a Majorana fermion---as naturally predicted b
y some BSM theories such as the MSSM---the only allowed electromagnetic mo
ment is the anapole moment. After recapitulating the electromagnetic momen
ts within classical electrodynamics\, I will discuss their role for neutra
l particles within a relativistic field theory description. Further\, I wi
ll discuss generating these moments via pairs of scalar-fermion or vector-
fermion at the one-loop level within a toy model\, focusing on the anapole
moment of a Majorana fermion. Here I will highlight the need for the back
ground field method to address the gauge-dependent triple gauge vertex ade
quately. Based on these general results\, I will present the predictions f
or the anapole moment of the lightest neutralino within simplified models
and the MSSM and contrast them with limits from direct detection experimen
ts. Finally\, I will discuss the model predictions for the dipole moments
of a Dirac DM candidate within a toy model and show that current-generatio
n of direct detection experiments strongly constrain the parameter space c
orresponding to a thermal relic.\n\nhttps://indico.kias.re.kr/event/220/\n
\n[Seminar] Merlin Reichard: https://us06web.zoom.us/j/88268710746?pwd=a1N
WOUZyYkNBQnM1N3lWM2VTYldUQT09
LOCATION:1423 in building 1 (KIAS)
ORGANIZER;CN="KIAS HEP Events":mailto:noreply@xxxxxxxxxx
URL:https://indico.kias.re.kr/event/220/
END:VEVENT
END:VCALENDAR
