2023
CNS + RNC RHIC Phys Res Lab Seminar by Dr. H. Otono (Sep15)
Place: Nishina Hall, RIKEN Wako Campus + hybrid
Date: Sep. 15 (Fri) 14:00 - 15:30
Speaker: Dr. Hidetoshi Otono (Kyushu Univ., Research Center for Advanced Particle Physics)
Title: First results from the FASER experiment at the LHC and prospect toward Forward Physics Facility in HL-LHC era Abstract:FASER, the ForwArd Search ExpeRiment, is an LHC experiment located 480 m downstream of the ATLAS interaction point along the beam collision axis. One of the major purposes of FASER is to detect and study TeV-energy neutrinos produced in the proton-proton collision at the LHC.
TeV-energy neutrinos will be sensitive to the very forward production of light hadrons and charmed mesons, providing access to both the very low-x and the very high-x regions of the colliding protons. The former regime is sensitive to novel QCD production mechanisms, such as BFKL effects and non-linear dynamics, as well as the gluon parton distribution function (PDF) down to x ∼ 10−7, well beyond the coverage of other experiments and providing key inputs for astroparticle physics. The latter regime provides information on open questions relating to the high-x PDFs, and in particular intrinsic charm. In addition, the FPF acts as a neutrino-induced deep-inelastic scattering (DIS) experiment with TeV-scale neutrino beams. The resulting measurements of neutrino DIS structure functions represent a valuable handle on the partonic structure of nucleons and nuclei, particularly their quark flavour separation, that is fully complementary to the charged-lepton DIS measurements expected at the upcoming Electron-Ion Collider (EIC).
FASER has been taking collision data since the start of LHC Run3 in July 2022. This talk will focus on giving an overview of the FASER detector and will also present our first physics results using a dataset collected in 2022, where we were the first to directly observe neutrino interactions at a particle collider experiment [1]. Toward the HL-LHC (High-Luminosity LHC) era from 2029, a new dedicated experimental cavern called Forward hysics Facility has been proposed, which is also discussed [2].
[1] https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.131.031801
[2] https://iopscience.iop.org/article/10.1088/1361-6471/ac865e
The 1st IReNA-Ukakuren Joint Workshop "Advancing Professional Development in Nuclear Astrophysics and Beyond"
米国と日本の宇宙核物理ネットワークの人的交流を図る若手主体のワークショップ The 1st IReNA-Ukakuren Joint Workshop “Advancing Professional Development in Nuclear Astrophysics and Beyond” を、8/28-9/1に宇核連、IReNA他と共催します。
詳細は https://indico2.cns.s.u-tokyo.ac.jp/event/249/ を御覧ください。
Changed: CNS Seminar by Prof. K. Nomura (Jun16)
Place: Nishina Hall, RIKEN Wako Campus + hybrid https://u-tokyo-ac-jp.zoom.us/meeting/register/tZUlfuGvpjIvE9Y_uZ2gESEGCXpdhy9M3Aa7
Date: Jun. 15 (Fri) 15:30 - 17:00
Speaker: Prof. Kosuke Nomura (Hokkaido)
Title: Microscopic description of octupole collective excitations
Abstract: Octupole deformations and related collective excitations are studied using the framework of nuclear density functional theory. Axially-symmetric quadrupole-octupole constrained self-consistent mean-field (SCMF) calculations with a choice of universal energy density functional are performed for those nuclei such as light actinides, Xe, Ba, Ce, and Nd isotopes from proton-rich to neutron-rich sides, and neutron-rich Ge, Se, and Kr, in which enhanced octupole correlations are expected to occur. Low-energy positive- and negative-parity spectra and transition strengths are computed in terms of the interacting boson model, with the parameters determined by the constrained SCMF calculations. Octupole-deformed equilibrium states are found in the potential energy surfaces of the nuclei in the regions corresponding to the neutron or/and proton numbers equal to 34, 56, 88, and 134. The evolution of the calculated spectroscopic properties indicate the onset of octupole deformation and exhibit signatures of octupole shape-phase transitions around these nucleon numbers.
2022
下浦享教授最終講義のご案内
2022年3月に原子核センターを退職される下浦享教授の最終講義が行われます。
講演: 下浦 享 教授
題目: 『原子核科学と私』
日時: 2022年3月14日 13:30～15:30
場所: 東京大学理学部1号館中央棟小柴ホール（要登録）
当日の様子は理学系研究科・理学部YouTubeチャンネルにてライブ配信します。
2020
東大理学部高校生のための冬休み講座2020
2020年12月26日 （土） 13:00- 12月27日 （日）終日に 行われる東大理学部 高校生のための冬休み講座2020 Online に今井准教授が講義を行います。 興味がある方は、以下のリンク先で登録をお願いします。 https://www.s.u-tokyo.ac.jp/ja/event/7093/