2nd seminar in S-LLP: Seminar series on Long Lived Particle searches

Thursday 29 Jul 2021, 09:30 → 11:30 Asia/Tokyo

Zoom

Hidetoshi Otono (Kyushu University (JP)), Hideyuki Oide (Tokyo Institute of Technology (JP)), Natsumi Nagata (University of Tokyo), Osamu Jinnouchi (Tokyo Institute of Technology (JP)), Ryu Sawada (University of Tokyo (JP)), Satoshi Shirai (Kavli IPMU)

S-LLP is a series of seminars on long lived particle searches. We invite experts, theory and experiment, on a selected topic for each seminar.

At S-LLP, physicists gather to share the latest results, plans and ideas for future searches.

The topic of the seminar is LLP searches using the ILC beam.

Dr. Stefania Gori (UC Santa Cruz) will tell us about phenomenology and Dr. Yasuhito Sakaki (KEK) will talk about experiments and the facility of the ILC.

The very intense electron and positron beams (2e21 e/year at the beam dump) at  ILC will give us new opportunities to explore new physics by placing a detector after the beam dump. Such an experiment will have a sensitivity to new particles with low masses and small couplings such as dark photons and axion-like particles. Such an experiment can be comparable or complementary to future experiments at CERN, e.g. SHiP. The phenomenology, experiment concept and expected performance will be discussed in the seminar.
 

Date :
Jul. 28th (Wednesday), 2021, PM 5:30- (PDT)
Jul. 29th (Thursday), 2021, AM 2:30- (CERN time)
Jul. 29th (Thursday), 2021, AM 9:30- (JST)
Place : Virtual (zoom)
Video recording will be available for registrants.

We use Slack for discussion. Please read the attached instruction below. The instruction is readable after your registration.

GroupPhoto.jpg

Seminar_recording.mp4

Slack_instruction.pdf

09:30 → 09:35 Introduction

S-LLP_2nd_opening.pdf

09:35 → 10:15 ILC Opportunities for Fixed Target Experiments

High energy beam dump experiments can offer a unique opportunity to test feebly
interacting beyond the Standard Model particles.
In this talk, we will first give an overview of the physics motivations for feebly
interacting particles. Then we will present a few studies of the reach of a future
beam dump experiment that utilizes the ILC electron beam. We will comment
on the complementarity of this experiment with other proposed future collider experiments.

Speaker: Stefania Gori (UC Santa Cruz)

TalkS-LLP.pdf

10:15 → 10:55 Long-lived particle searches using ILC beams

Although the main purpose of the ILC is the Higgs precision measurement
and BSM searches in the collider experiment, non-collider experiments
such as fixed target experiments using the ILC beams will expand the
possibility of new physics. Various ideas for long-lived particle
searches at CERN have also been proposed using forward and off-axis
detectors in parallel with collider experiments, and it would be useful
to consider similar possibilities at the ILC. This talk will mainly
give an overview of the ILC facility and a fixed-target or beam dump
experiment that will be feasible at the ILC site.

Speaker: Yasuhito Sakaki (KEK)

Sakaki_S-LLP.pdf

10:55 → 11:15 Free discussion