＜＜＜「@」を「__AT__」に置き換えています＞＞＞

To: sg-l__AT__yukawa.kyoto-u.ac.jp
Date: Sat, 26 Apr 2025 16:23:02 +0900
Subject: [Sg-l:9335] Announcement of KEK-JAEA Joint Seminar (June 5)
From: gubler.philipp (Sg-l 経由) 

Dear Colleagues,

We are excited to announce the forthcoming fourth KEK-JAEA Joint Seminar,
 titled:
"Applications of Machine Learning and Deep Learning to Experimental Data
Analysis" on June 5th at KEK Tokai Campus (東海一号館 Seminar room 116/
zoom).

Speaker: Prof. Ayumi Kasagi (Rikkyo University)

Time: 13:30 – 15:30 (JST), 5 June 2025

Location: 東海一号館, 116

Zoom: https://kek-jp.zoom.us/j/4810959894

Website: https://kds.kek.jp/event/55286/

Abstract: The spectacular advances of deep learning in recent years have
led to breakthroughs across a wide range of data analysis tasks. At the
same time, the techniques used to boost model performance have become
increasingly intricate, with ever larger parameter counts and training
datasets. What, then, are the practical steps needed to harness these
methods for fundamental science especially in the analysis of physics
experiments? In this talk we first survey how machine learning and deep
learning are being employed in international experimental collaborations.
 We then present, step by step, the workflow we have developed to tailor
deep-learning models for the microscopic image analysis of nuclear
emulsion detectors. Finally, we discuss several modern deep-learning
ideas and how they might further benefit experimental data analysis.

The KEK-JAEA Joint Seminar is a series held every 1-3 months that serves 
as a platform for experimentalists and theorists to discuss current trends
and future directions in hadron and nuclear physics, with a special
focus on J-PARC activities.

While hybrid attendance is supported, we strongly encourage onsite
participation for more interactive and engaging discussions. We look
forward to your participation!


Best regards,
Organizers, KEK-JAEA Joint Seminar

Philipp Gubler (JAEA)
GuangJuan Wang (KEK)
Toru Kojo (KEK)
Akinobu Dote (KEK)
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
Date: Tue, 22 Jul 2025 10:01:14 +0900
To: 
Subject: [Sg-l:9560] Announcement: Join Us for the 5th KEK-JAEA Joint Seminar – August 7th
From: wgj--- (Sg-l 経由) 

＊＊＊＊　重複して受け取られます方、失礼します　＊＊＊＊

Dear Colleagues,

We are excited to announce 5th KEK-JAEA Joint Seminar, titled:
"J-PARC will innovate nuclear and hadron physics" (東海一号館 Seminar
room 116/zoom).

Speaker: Prof. Hirokazu Tamura (Tohoku University / JAEA)

Time: 14:00 – 16:00 (JST), 7 August 2025

Location: 東海一号館, 116

Zoom: https://kek-jp.zoom.us/j/4810959894

Website: https://kds.kek.jp/event/56492/

Abstract: At low energies, the quark many-body system forms a unique
higher-order structure of hadrons and then nuclei, but we have yet to
fully understand why it happens based on QCD. Under this situation, it
is also difficult to elucidate the high-density matter inside neutron
stars.
   The J-PARC hadron facility is challenging this grand problem through
various experiments on strangeness nuclear physics and intermediate/low
energy hadron physics, aiming to solve mysteries of quark confinement
and its mass generation, hadron-hadron interactions (nuclear/baryon
forces), high-density matter, and so on. In the seminar, the overview
and future prospects of these research activities at J-PARC are
presented from the experimental point of view.

The KEK-JAEA Joint Seminar is a recurring series held every 1–3 months
that serves as a platform for experimentalists and theorists to discuss
current trends and future directions in hadron and nuclear physics, with
a special focus on J-PARC activities.

While hybrid attendance is supported, we strongly encourage onsite
participation for more interactive and engaging discussions. We look
forward to your participation!


Best regards,
Organizers, KEK-JAEA Joint Seminar
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
Date: Tue, 19 Aug 2025 14:26:48 +0900
To: 
Subject: [Sg-l:9626] Announcement: 6th KEK-JAEA Joint Seminar – 	 September 1, 2025
From: wgj--- (Sg-l 経由) 

＊＊＊＊　重複して受け取られます方、失礼します　＊＊＊＊

Dear Colleagues,

We are excited to announce the 6th KEK-JAEA Joint Seminar, titled: "
Hadron resonances - coexistence of compact and extended structures" (東
海一号館 Seminar room 116/Zoom).

Speaker: Prof. Atsushi Hosaka (RCNP, Osaka University)

Time: 14:00 - 16:00 (JST), September 1, 2025

Location: Seminar Room 116, 東海一号館

Zoom: https://kek-jp.zoom.us/j/4810959894

Website: https://kds.kek.jp/event/56753/

Abstract: Recent experimental discoveries of hadron resonances, many of
which are classified as exotic hadrons, imply various structures of
different natures.  Typically, one is based on quark and colored
interactions which results in a compact structure, while the other on
hadrons and their interactions which results in a spatially extended
structure.  In general, these different natures mix and coexist.  In
fact, there are several evidences that indicate such mixing.  In this
talk, we show several examples of such coexistence for hadrons including
X(3872), Omega(2012) and Omega_c families.


The KEK-JAEA Joint Seminar is a recurring series held every 1-3 months
that serves as a platform for experimentalists and theorists to discuss
current trends and future directions in hadron and nuclear physics, with
a special focus on J-PARC activities.

While hybrid attendance is supported, we strongly encourage onsite
participation for more interactive and engaging discussions. We look
forward to your participation!

Best regards,
Organizers, KEK-JAEA Joint Seminar
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
Date: Fri, 03 Oct 2025 11:13:22 +0900
To: 
Subject: [Sg-l:9736] Announcement: 7th KEK-JAEA Joint Seminar, October 28, 2025
From: wgj--- (Sg-l 経由) 

＊＊＊＊　重複して受け取られます方、失礼します　＊＊＊＊

Dear Colleagues,

We are pleased to announce the 7th KEK-JAEA Joint Seminar:

======================================
Speaker: Dr. Ryoko Kino (RIKEN)
Title: Precise measurement of hypertriton binding energy via decay pion
spectroscopy at MAMI
Time: October 28, 2025 (Tue), 14:00–16:00 (JST)
Location: Seminar Room 116, 東海一号館
Zoom: https://kek-jp.zoom.us/j/4810959894
Website: https://kds.kek.jp/event/57160/

======================================
Abstract:

The hypertriton (3ΛH), the lightest bound hypernucleus, has long served
as a benchmark in hypernuclear physics. However, its fundamental
properties, such as the Λ binding energy and lifetime, have remained
uncertain. In particular, since the 2010s, new measurements of both
quantities have revealed inconsistencies, drawing renewed attention to
the so-called “hypertriton puzzle.” This situation underscores the need
for direct and precise binding-energy measurements.

To address this issue, we carried out a high-precision measurement of
the Λ binding energy of 3ΛH using decay pion spectroscopy at the Mainz
Microtron (MAMI). Building on the method successfully applied in the 4ΛH
study at MAMI, the experiment introduced a newly designed lithium target
with low atomic number and optimized geometry. The target was elongated
to ensure high luminosity while keeping its transverse thickness small
to minimize pion energy loss, thereby reducing both electromagnetic and
hyperfragment-induced backgrounds. This configuration enabled the first
statistically significant observation of a distinct decay-pion momentum
peak from 3ΛH.

The seminar will focus on the experimental methodology and analysis:
target development, spectrometer setup, calibration strategies using
both elastic electron scattering and a novel undulator-based beam energy
measurement, and the procedures employed to achieve high statistical
precision. The results provide crucial input toward resolving the
apparent inconsistencies between lifetime and binding-energy
measurements.
The possible implications of the observed decay pion momentum difference
between 3ΛH and 4ΛH for Λ–N interactions will also be briefly discussed.
======================================

The KEK-JAEA Joint Seminar is a recurring series held every 1-3 months
that serves as a platform for experimentalists and theorists to discuss
current trends and future directions in hadron and nuclear physics, with
a special focus on J-PARC activities.

While hybrid attendance is supported, we strongly encourage onsite
participation for more interactive and engaging discussions. We look
forward to your participation!

Best regards,
Organizers, KEK-JAEA Joint Seminar
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
Date: Mon, 27 Oct 2025 13:40:02 +0900
To: , ml-np__AT__rcnp.osaka-u.ac.jp
Subject: [Sg-l:9799] Reminder: 7th KEK-JAEA Joint Seminar, October 28, 2025
From: A. Dote (Sg-l 経由) 

＊＊＊＊　重複して受け取られます方、失礼します　＊＊＊＊

皆様、
明日（28日）14時から下記内容で KEK-JAEA Joint Seminar（第7回）
を行います。Onlineでも参加可能ですので、興味のある方は
是非参加して下さい。多くの方の参加をお待ちしております。
それでは失礼します。

KEK-JAEA Joint Seminar 世話人一同


-----------------------------------------------------------
Dear Colleagues,

We are pleased to announce the 7th KEK-JAEA Joint Seminar:

======================================
Speaker: Dr. Ryoko Kino (RIKEN)
Title: Precise measurement of hypertriton binding energy via decay pion
spectroscopy at MAMI
Time: October 28, 2025 (Tue), 14:00 - 16:00 (JST)
Location: Seminar Room 116, 東海一号館
Zoom: https://kek-jp.zoom.us/j/4810959894
Website: https://kds.kek.jp/event/57160/

======================================
Abstract:

The hypertriton (3ΛH), the lightest bound hypernucleus, has long served
as a benchmark in hypernuclear physics. However, its fundamental
properties, such as the Λ binding energy and lifetime, have remained
uncertain. In particular, since the 2010s, new measurements of both
quantities have revealed inconsistencies, drawing renewed attention to
the so-called “hypertriton puzzle.” This situation underscores the need
for direct and precise binding-energy measurements.

To address this issue, we carried out a high-precision measurement of
the Λ binding energy of 3ΛH using decay pion spectroscopy at the Mainz
Microtron (MAMI). Building on the method successfully applied in the 4ΛH
study at MAMI, the experiment introduced a newly designed lithium target
with low atomic number and optimized geometry. The target was elongated
to ensure high luminosity while keeping its transverse thickness small
to minimize pion energy loss, thereby reducing both electromagnetic and
hyperfragment-induced backgrounds. This configuration enabled the first
statistically significant observation of a distinct decay-pion momentum
peak from 3ΛH.

The seminar will focus on the experimental methodology and analysis:
target development, spectrometer setup, calibration strategies using
both elastic electron scattering and a novel undulator-based beam energy
measurement, and the procedures employed to achieve high statistical
precision. The results provide crucial input toward resolving the
apparent inconsistencies between lifetime and binding-energy
measurements.
The possible implications of the observed decay pion momentum difference
between 3ΛH and 4ΛH for ΛN interactions will also be briefly discussed.
======================================

The KEK-JAEA Joint Seminar is a recurring series held every 1-3 months
that serves as a platform for experimentalists and theorists to discuss
current trends and future directions in hadron and nuclear physics, with
a special focus on J-PARC activities.

While hybrid attendance is supported, we strongly encourage onsite
participation for more interactive and engaging discussions. We look
forward to your participation!

Best regards,
Organizers, KEK-JAEA Joint Seminar
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
Date: Fri, 09 Jan 2026 13:12:40 +0900
To: , 
Subject: [Sg-l:9985] Announcement: 8th KEK-JAEA Joint Seminar, January 29, 2026
X-BeenThere: sg-l__AT__ml.yukawa.kyoto-u.ac.jp
From: wgj--- (Sg-l 経由) 

＊＊＊＊　重複して受け取られます方、失礼します　＊＊＊＊

Dear Colleagues,

We are excited to announce the 8th KEK-JAEA Joint Seminar:

======================================
Speaker: Prof. Hiroyuki Tajima (The University of Tokyo)
Title: An interdisciplinary approach to many-body physics: From 
ultracold atoms to dense matter
Time: January 29, 2026 (Thu), 14:00–16:00 (JST)
Location: Rooms 321 & 322, Kenkyu Honkan (KEK Tsukuba Campus)
Zoom: https://kek-jp.zoom.us/j/4810959894
Website: https://kds.kek.jp/event/58320/

======================================
Abstract: Quantum many-body problems are ubiquitous in modern physics
across a wide range of research fields. One of the most important
challenges is the elucidation of dense matter properties relevant to
neutron star physics. While numerous attempts have been made to address
this problem within nuclear many-body theories, we pursue an alternative
approach by exploiting an analogy with ultracold atomic systems. In this
talk, we discuss a microscopic mechanism of the hadron-quark crossover
that occurs in dense matter, drawing an analogy with the Bose-Einstein
condensate to Bardeen-Cooper-Schrieffer (BEC-BCS) crossover established
in ultracold atomic experiments. Moreover, we present our recent
theoretical progress on a tunable three-body force in ultracold atoms,
in analogy with the Fujita-Miyazawa three-nucleon force.
======================================

The KEK-JAEA Joint Seminar is a recurring series held every 1-3 months
that serves as a platform for experimentalists and theorists to discuss
current trends and future directions in hadron and nuclear physics, with
a special focus on J-PARC activities.

While hybrid attendance is supported, we strongly encourage onsite
participation for more interactive and engaging discussions. We look
forward to your participation!

Best regards,
Organizers, KEK-JAEA Joint Seminar
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
Date: Fri, 09 Jan 2026 14:55:42 +0900
To: , 
Subject: [Sg-l:9986] Re: 【訂正・correction】Venue information – 8th	 KEK-JAEA Joint Seminar, January 29,2026
From: wgj--- (Sg-l 経由) 

＊＊＊＊　重複して受け取られます方、失礼します　＊＊＊＊

Dear Colleagues,

This is a correction regarding the venue information of the 8th KEK-JAEA 
Joint Seminar.

Correct location:
Meeting Room 1, Kenkyu Honkan 1F (KEK Tsukuba Campus)

We apologize for any confusion caused by the previous announcement.

All other information remains unchanged.

Best regards,
Organizers, KEK-JAEA Joint Seminar

----- Original Message -----
> ＊＊＊＊　重複して受け取られます方、失礼します　＊＊＊＊
> 
> Dear Colleagues,
> 
> We are excited to announce the 8th KEK-JAEA Joint Seminar:
> 
> ======================================
> Speaker: Prof. Hiroyuki Tajima (The University of Tokyo)
> Title: An interdisciplinary approach to many-body physics: From 
> ultracold atoms to dense matter
> Time: January 29, 2026 (Thu), 14:00–16:00 (JST)
> Location: Rooms 321 & 322, Kenkyu Honkan (KEK Tsukuba Campus)
> Zoom: https://kek-jp.zoom.us/j/4810959894
> Website: https://kds.kek.jp/event/58320/
> 
> ======================================
> Abstract: Quantum many-body problems are ubiquitous in modern physics
> across a wide range of research fields. One of the most important
> challenges is the elucidation of dense matter properties relevant to
> neutron star physics. While numerous attempts have been made to 
address
> this problem within nuclear many-body theories, we pursue an 
alternative
> approach by exploiting an analogy with ultracold atomic systems. In 
this
> talk, we discuss a microscopic mechanism of the hadron-quark crossover
> that occurs in dense matter, drawing an analogy with the Bose-Einstein
> condensate to Bardeen-Cooper-Schrieffer (BEC-BCS) crossover 
established
> in ultracold atomic experiments. Moreover, we present our recent
> theoretical progress on a tunable three-body force in ultracold atoms,
> in analogy with the Fujita-Miyazawa three-nucleon force.
> ======================================
> 
> The KEK-JAEA Joint Seminar is a recurring series held every 1-3 months
> that serves as a platform for experimentalists and theorists to 
discuss
> current trends and future directions in hadron and nuclear physics, 
with
> a special focus on J-PARC activities.
> 
> While hybrid attendance is supported, we strongly encourage onsite
> participation for more interactive and engaging discussions. We look
> forward to your participation!
> 
> Best regards,
> Organizers, KEK-JAEA Joint Seminar
> 
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
Date: Thu, 29 Jan 2026 10:09:11 +0900
To: ml-np , sg-l__AT__ml.yukawa.kyoto-u.ac.jp
Subject: [Sg-l:10035] Reminder: 8th KEK-JAEA Joint Seminar January 29 2026
From: Toru Kojo (Sg-l 経由) 

＊＊＊＊　重複して受け取られます方、失礼します　＊＊＊＊

皆様、

本日の14時から下記内容で KEK-JAEA Joint Seminar（第8回）を行います。
Onlineでも参加可能ですので、興味のある方は是非参加して下さい。
多くの方の参加をお待ちしております。

KEK-JAEA Joint Seminar 世話人一同
----------------------------------------------------------------

Dear Colleagues,

We are excited to announce the 8th KEK-JAEA Joint Seminar:

======================================
Speaker: Prof. Hiroyuki Tajima (The University of Tokyo)
Title: An interdisciplinary approach to many-body physics: From
ultracold atoms to dense matter
Time: January 29, 2026 (Thu), 14:00–16:00 (JST)
Location: Meeting Room 1, Kenkyu Honkan 1F (KEK Tsukuba Campus)
Zoom: https://kek-jp.zoom.us/j/4810959894
Website: https://kds.kek.jp/event/58320/

======================================
Abstract: Quantum many-body problems are ubiquitous in modern physics
across a wide range of research fields. One of the most important
challenges is the elucidation of dense matter properties relevant to
neutron star physics. While numerous attempts have been made to address
this problem within nuclear many-body theories, we pursue an alternative
approach by exploiting an analogy with ultracold atomic systems. In this
talk, we discuss a microscopic mechanism of the hadron-quark crossover
that occurs in dense matter, drawing an analogy with the Bose-Einstein
condensate to Bardeen-Cooper-Schrieffer (BEC-BCS) crossover established
in ultracold atomic experiments. Moreover, we present our recent
theoretical progress on a tunable three-body force in ultracold atoms,
in analogy with the Fujita-Miyazawa three-nucleon force.
======================================

The KEK-JAEA Joint Seminar is a recurring series held every 1-3 months
that serves as a platform for experimentalists and theorists to discuss
current trends and future directions in hadron and nuclear physics, with
a special focus on J-PARC activities.

While hybrid attendance is supported, we strongly encourage onsite
participation for more interactive and engaging discussions. We look
forward to your participation!

Best regards,
Organizers, KEK-JAEA Joint Seminar
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
Date: Thu, 19 Feb 2026 12:32:42 +0900
To: , 
Subject: [Sg-l:10094] 9th KEK-JAEA Joint Seminar, March 18, 2026

＊＊＊＊　重複して受け取られます方、失礼します　＊＊＊＊

Dear Colleagues,

===============================================================

We are excited to announce the 9th KEK-JAEA Joint Seminar:

======================================

Speaker: Prof. Toshimi Suda (Tohoku University)
Title: Proton Charge Radius
Time: March 18, 2026 (Wed), 14:00–16:00 (JST)
Location: Room 116, KEK東海キャンパス（東海1号館）
Zoom: https://kek-jp.zoom.us/j/4810959894
Website: https://kds.kek.jp/event/58724/

======================================
Abstract: The “Proton Radius Puzzle,” initiated by the 2010 muonic
hydrogen measurement, highlighted a significant discrepancy (about 7\
sigma) with respect to values derived from electron scattering and
ordinary hydrogen spectroscopy. While recent measurements, such as the
PRad experiment at JLab and some of updated hydrogen spectroscopies,
look to favor a smaller proton charge radius, consistent with the muonic
result, inconsistencies with earlier electron scattering data remain
unresolved. In addition, discrepancies among recent 1S–3S transition
hydrogen spectroscopy resultsn suggest the presence of unquoted
systematic uncertainties. Consequently, a precise determination of the
proton charge radius is still critical to resolve this long-standing
issue.
  In this seminar, I will report on the current status of our ULQ2 (
Ultra-Low Q2) project at the Research Center for Accelerator and
Radioisotope Science (RARiS; former ELPH), Tohoku University. Utilizing
a 60-MeV electron linac, we have measured the elastic electron–proton
scattering cross section in the lowest-ever momentum transfer region, Q^
2 = 0.0003–0.008 (GeV/c)^2. A key feature of this project is an absolute
cross-section measurement relative to the well-known ^{12}C cross
section using a CH_2 target, aiming to control systematic uncertainties
at the 10^{-3} level. This approach is expected to provide the least
model-dependent determination of the proton charge radius from electron
scattering.
  In addition to the proton measurement, we have also performed elastic
electron–deuteron scattering measurement under the same kinematics,
providing the world’s lowest-Q^2 data for the deuteron.  A puzzle
similar to that of the proton has been pointed out, and our measurement
enables a determination of the deuteron charge radius. From this e+d
data, we are challenging the determination of the neutron charge radius
via electron scattering for the first time by exploiting the fourth
moments of the deuteron charge distribution.
  I will first review the current status of the Proton Radius Puzzle and
recent global experimental efforts. I will then present the details of
the ULQ2 project, including the challenges for the neutron charge radius.
======================================

The KEK-JAEA Joint Seminar is a recurring series held every 1-3 months
that serves as a platform for experimentalists and theorists to discuss
current trends and future directions in hadron and nuclear physics, with
a special focus on J-PARC activities.

While hybrid attendance is supported, we strongly encourage onsite
participation for more interactive and engaging discussions. We look
forward to your participation!

Best regards,
Organizers, KEK-JAEA Joint Seminar