The Korean Physical Society 06130 22, Teheran-ro 7-gil, Gangnam-gu, Seoul, Republic of Korea 610 Representation : Tae Won NOH TEL: 02-556-4737 FAX: 02-554-1643 E-mail : webmaster@kps.or.kr Copyright(C) KPS, All rights reserved.
30 May 2022 to 4 June 2022
Virtual Seoul
Asia/Seoul timezone

Measurement of the smallest neutrino mixing angle using reactor antineutrino events with neutron capture on hydrogen at RENO

Not scheduled
5m
Virtual Seoul

Virtual Seoul

Poster Neutrino oscillation Poster

Speaker

Sang Yong KIM (Seoul National University)

Description

RENO has been taking data since August, 2011 and successfully measured the smallest neutrino mixing angle, theta13. The measured value is obtained from the observed reactor anti-neutrino events with neutron captures on gadolinium (n-Gd) in the target detector region. The experiment has also measured the mixing angle using an independent sample of neutron captures on hydrogen (n-H). Because of a large accidental background in the n-H sample, an improved technique has been developed to make an effective removal of the background. For example, flashing PMTs make a contribution to an accidental background against a reactor neutrino signal. By effective removing the flashing events, we can make better extraction of the n-H reactor antineutrino signal.
In particular, the (n-H) analysis utilizes events in both target and gamma-catcher and thus obtains a larger reactor antineutrino sample, twice more than that of (n-Gd). This independent measurement provides an important cross-check on the systematic uncertainties of the n-Gd theta13 measurement.
In this talk, we will present a new measurement of theta13 using 2800 days of n-H data.

Collaboration RENO

Primary author

Sang Yong KIM (Seoul National University)

Co-authors

Dr Byeongsu YANG (Department of Physics and Astronomy, Seoul National University) Ms Daeun JUNG (Department of Physics, Sungkyunkwan University) Mr Dongho MOON (Department of Physics, Chonnam National University) Dr Eunhyang KWON (Department of Physics, Sungkyunkwan University) Prof. Hanil JANG (Department of Fire Safety, Seoyeong University) Hyungi Lee (Seoul National University) Dr Hyunkwan SEO (Department of Physics and Astronomy, Seoul National University) Prof. Intae YU (Department of Physics, Sungkyunkwan University) Prof. Intaek LIM (Department of Physics Education, Chonnam National University) Prof. Jaeyool KIM (Department of Physics, Chonnam National University) Dr Jeeseung JANG (GIST College, Gwangju Institute of Science and Technology) Dr Jiwoong SEO (Department of Physics, Sungkyunkwan University) Mr Jonggun KIM (Department of Physics, Sungkyunkwan University) Prof. Jonghee Yoo (Department of Physics and Astronomy, Seoul National University) Mr Juneho CHOI (Department of Radiology, Dongshin University) Prof. Kyungkwang JOO (Department of Physics, Chonnam National University) Prof. Myoung Youl PAC (Department of Radiology, Dongshin University) Mr Seok-Gyeong YOON (Department of Physics, Korea Advanced Institute of Science and Technology) Prof. Soo-Bong KIM (Department of Physics, Sungkyunkwan University) Prof. Wooyoung KIM (Department of Physics, Kyungpook National University)

Presentation Materials