Institute for Nuclear and Particle Astrophysics (INPA) at LBNL
The INPA Seminar weekly talks are on Fridays, starting at 12:00 pm, unless informed otherwise. The seminar talk starts with a brief presentation of the weekly scientific news. Typically, the talks conclude by 1:00 pm. The seminars are held in the Sessler Conference Room, located in Bldg. 50A- 5132.
Please send all suggestions for future INPA talks and speakers to the INPA Committee.
To be added to the INPA News Mailing List, please contact Erica Hall.
INPA Talks are archived here.
The INPA Committee currently consists of:
2025-26
Daniel Kodroff
Krystal Alfonso
Edmond Chaussidon
INPA SEMINAR SPEAKER: Dacheng Xu(Columbia University)- Title: Measurement of the Solar Boron-8 Neutrino Fog with XENONnT
August 7 @ 12:00 pm - 1:00 pm
Date: August 7, 2026
Time: 12:00 pm – 1:00 pm
Location: Sessler Conference Room – 50A-5132 [Hybrid and In-Person]
Speaker: Dacheng Xu (Columbia University)
Title: Measurement of the Solar Boron-8 Neutrino Fog with XENONnT
Abstract: Coherent elastic neutrino–nucleus scattering (CEvNS) of solar neutrinos is a fundamental Standard Model process and an irreducible background for next-generation dark matter searches, often referred to as the “neutrino fog.” With its large exposure and ultra-low background, XENONnT has reached the sensitivity required to observe this interaction. Using data from the first three science runs, we have searched for Boron-8 solar neutrino CEvNS and rejected the background-only hypothesis at 3.3 sigma. In this talk, I will present a detailed view of the search for solar Boron-8 CEvNS using the full analyzed dataset and discuss its implications for beyond-Standard-Model neutrino physics and light dark matter in neutrino fog.
Join Zoom Meeting
https://lbnl.zoom.us/j/95016696011?pwd=Tk1XOW1Xd3RYRnlsc2tEYmRWZlVVZz09
Meeting ID: 950 1669 6011
Passcode: 247722
INPA guests from campus can now come to the lab early on Fridays. The INPA Common Room (50-5026) is reserved for our guests from 10:00 a.m. to 12:00 noon and from 1 p.m. to 5 p.m. Note that the seminars are now held in 50A-5132 to accommodate a more significant number of attendees.
CPTea Series (also known as INPA Tea Series)
The Physics Division CPTea Series invites you to an In-Person Tea Series 1st Friday of every month at 3:30 pm INPA Conference Room 50-5026.
Everyone is welcome to attend the open forum. Tea and light refreshments will be served.
INPA Common Room (50-5026)
Fridays
3:30 pm
Access to the Lab
For a shuttle pass, please email Erica Hall. The pass is only valid for the day of the seminar.