| 講演者： | Takashi SAKO (Solar-Terrestrial Environment Laboratory, Nagoya University) |
| タイトル： | LHCf: Very forward measurement at LHC for Ultra-High Energy Cosmic-Ray physics |
| 日時(Y-M-D)： | 2011-07-21, 13:30-15:00 |
| 場所： | RIBF棟大会議室 |
| Type: | Radiation Laboratory Seminar |
| アブストラクト： |
Energy spectrum of cosmic-rays is measured up to 10^20 eV.
At such high energy cosmic-rays are observed through extensive
air showers and Monte Carlo simulation of air shower is
used in the interpretation. However, uncertainty in the hadronic
interaction employed in the simulation is a major source of
the uncertainty in the determination of cosmic-ray energy and
chemical composition.
The Large Hadron Collider forward (LHCf) experiment is an
experiment at LHC dedicated to calibrate hadronic interaction models
used in the cosmic-ray physics. To constrain the models
for cosmic-ray air showers, cross sections of the very forward particle
emission are indispensable because they carry most of the
collision energy. LHCf can measure neutral particles emitted in the
pseudorapidity>8.4 at LHC collisions. In this seminar,
I will present a brief review of the recent cosmic-ray observations
and LHCf, then concentrate on our first results at LHC
for the photon spectra.
I will also discuss a possible unique measurement of forward
particles at RHIC. reference: hep-ex: arXiv:1104.5294v2 |