Particle Physics Days 2025

Nov 13, 2025, 9:00 AM → Nov 14, 2025, 5:18 PM Europe/Helsinki

Hanna Lempiäinen, Henning Kirschenmann (LUT University and Helsinki Institute of Physics (FI)), Ilkka Helenius (University of Jyväskylä), Jens Erik Brucken (Helsinki Institute of Physics (FI)), Matti Heikinheimo (University of Helsinki and Helsinki Institute of Physics), Pyry Runko (University of Jyväskylä)

Annual meeting of the Particle Physics Division of the Finnish Physical Society.

This is a two-day in-person meeting in Hyytiälä research station

https://www.helsinki.fi/en/research-stations/hyytiala-forest-station 

Please register as soon as possible. Participation guaranteed only for registrations before 22 October.

Accommodation and bus travel will be covered by HIP projects and/or FPS funding to the PP division. 

Previous meetings linked from PP Division home pages and instructions to sign up to pp-findiv list:

https://www.mv.helsinki.fi/home/hitu_www/partdiv.html 

Thu, November 13

9:15 AM → 11:30 AM Bus Transfer from Jyväskylä to Hyytiälä

Departure times: Matkakeskus 9:30, University 9:45, Orivesi train station 11:35 (after the passengers from the train from Helsinki have joined the bus)

11:30 AM → 11:45 AM Bus Transfer from Orivesi Train Station to Hyytiälä

Participants from other places than Jyväskylä are invited to arrive by train at 11:31 to Orivesi. They will be picked up by the bus arriving from Jyväskylä.

11:45 AM → 12:40 PM Buffet lunch

12:40 PM → 1:30 PM Session: Talks on strategy process and long term perspectives

12:40 PM European Particle Physics Strategy update - Nordic and Finnish perspective tbc

15 + 5 min

Speaker: Prof. Panja Luukka (Lappeenranta-Lahti University of Technology (FI))

Finland_ESPP_update_November 2025.pdf

1:00 PM Early Career Researchers - summary from ECFA ECRs

10+5'

Speakers: Hanna Lempiäinen, Laura Huhta (University of Jyvaskyla (FI)), Mikael Myllymaki (Helsinki Institute of Physics (FI)), Petja Kalle Matias Paakkinen

1:15 PM CoE in Neutron-Star Physics

Speaker: Aleksi Vuorinen (University of Helsinki)

1:30 PM → 2:30 PM Session: QCD theory

1:30 PM QCD in UPCs

25+5'

Speaker: Vadim Guzey (University of Jyvaskyla)

Guzey_PPD25.pdf

2:00 PM Dense Matter

25+5'

Speaker: Risto Paatelainen

2:30 PM → 3:00 PM Afternoon coffee

3:00 PM → 5:00 PM Evening session: Experimental overviews and upgrades

3:00 PM CMS+TOTEM/PPS experimental overview

25'+5'

Speaker: Nurfikri Norjoharuddeen (Helsinki Institute of Physics (FI))

3:30 PM Results from the recent 2025 light ion LHC run by ALICE

25+5 min

Speaker: Maxim Virta (University of Jyväskylä)

4:00 PM CMS/PPS upgrades

20'+5'

Speaker: Jens Erik Brucken (Helsinki Institute of Physics (FI))

4:25 PM CMS: Triggering and triggerless analysis with edge AI

15' + 5'

Speaker: Santeri Laurila (CERN & Helsinki Institute of Physics (FI))

5:00 PM → 6:00 PM Agenda: Division meeting

1. Opening of the meeting, choosing the chair and secretary, and two persons for counting votes
2. Accepting the agenda
3. Choosing the board
4. Activity of the division 2024-2025
5. Meetings organized in Finland 2024-2025
6. Meetings to be organized in Finland 2025-2026
7. RECFA representative report
8. ECFA ECR representatives report
9. Nominating a new PECFA delegate
10. AOB
11. Closing the meeting

5:00 PM RECFA

Speaker: Prof. Panja Luukka (Lappeenranta-Lahti University of Technology (FI))

6:00 PM → 7:00 PM Dinner

7:00 PM → 11:00 PM Rantasauna

Fri, November 14

8:00 AM → 9:00 AM Breakfast

9:00 AM → 9:50 AM FCC-ee project status, physics goals and detector R&D

Speaker: Juska Pekkanen (CERN)

9:50 AM → 10:05 AM Short break (no coffee)

10:05 AM → 11:25 AM Session: Various Topics

10:05 AM Nonhydrodynamic effects in ultrarelativistic gases

15+5min

Speaker: Caio Brito (University of Jyväskylä)

10:25 AM MoEDAL-MAPP Experiment at CERN

15+5

Speaker: Dr Matti Kalliokoski (Helsinki Institute of Physics (FI))

10:45 AM POSEIDON (nuclear fuel imaging)

15+5

Speaker: Santeri Saariokari (Helsinki Institute of Physics (FI))

11:05 AM Jet reconstruction in FoCal

15+5'

Speaker: Laura Huhta (University of Jyvaskyla (FI))

11:30 AM → 12:30 PM Lunch

12:30 PM → 2:35 PM Session: Various topics

12:30 PM Hyytiälä Station: Research done here

12:50 PM Cosmological gravitational particle production

15+5'

Speaker: Duarte Miguel da Silva Feiteira (University of Helsinki)

1:10 PM Tachyonic production of dark relics: Numerical solutions to Quantum Kinetic Equations

15'+5'

Speakers: Olli Juho Aukusti Vaisanen (Helsinki Institute of Physics (FI)), Olli Väisänen

1:30 PM Neural network enhanced Bayesian global analysis of relativistic heavy ion collisions

15+5'

Speaker: Harri Niemi (University of Jyväskylä)

niemi_hitu2025.pdf

1:50 PM The LO DIS dipole picture in exact kinematics

15+5

Speaker: Magnus Bertilsson

2:10 PM Tales from particle physics

15+5'

Speaker: Timo Johnny Karkkainen (Helsinki Institute of Physics (FI))

2:30 PM Survey and group picture (QR Code, link, and picture)

2:35 PM → 3:00 PM Coffee

2:45 PM → 3:15 PM Buses departing to Helsinki and Jyväskylä

If you need to catch a train at Orivesi train station (e.g. at 15:26), then please contact the organisers!

The Jyväskylä bus is scheduled to leave at 14:45 to catch the 15:26 train, if needed. However, if there is no demand, the bus might leave a bit later and skip the stop at Orivesi. To be confirmed by Thursday evening.
The bus towards Helsinki is scheduled to leave at 15:00.