663 research outputs found
A study of the measurement precision of the Higgs boson decaying into tau pairs at the ILC
We evaluate the measurement precision of the production cross section times
the branching ratio of the Higgs boson decaying into tau lepton pairs at the
International Linear Collider (ILC). We analyze various final states associated
with the main production mechanisms of the Higgs boson, the Higgs-strahlung and
WW-fusion processes. The statistical precision of the production cross section
times the branching ratio is estimated to be 2.6% and 6.9% for the
Higgs-strahlung andWW-fusion processes, respectively, with the nominal
integrated luminosities assumed in the ILC Technical Design Report; the
precision improves to 1.0% and 3.4% with the running scenario including
possible luminosity upgrades. The study provides a reference performance of the
ILC for future phenomenological analyses.Comment: 10 pages, 6 figures, 9 tables, revised from v
Grafting of Polypeptide on Cellulose Derivatives (Commemoration Issue Dedicated to Professor Hiroshi Ibagaki, Professor Michio Kurata, Professor Ryozo Kitamura, On the Occasion of Their Retirments)
Two-fingered Hand with Gear-type Synchronization Mechanism with Magnet for Improved Small and Offset Objects Grasping: F2 Hand
A problem that plagues robotic grasping is the misalignment of the object and
gripper due to difficulties in precise localization, actuation, etc.
Under-actuated robotic hands with compliant mechanisms are used to adapt and
compensate for these inaccuracies. However, these mechanisms come at the cost
of controllability and coordination. For instance, adaptive functions that let
the fingers of a two-fingered gripper adapt independently may affect the
coordination necessary for grasping small objects. In this work, we develop a
two-fingered robotic hand capable of grasping objects that are offset from the
gripper's center, while still having the requisite coordination for grasping
small objects via a novel gear-type synchronization mechanism with a magnet.
This gear synchronization mechanism allows the adaptive finger's tips to be
aligned enabling it to grasp objects as small as toothpicks and washers. The
magnetic component allows this coordination to automatically turn off when
needed, allowing for the grasping of objects that are offset/misaligned from
the gripper. This equips the hand with the capability of grasping light,
fragile objects (strawberries, creampuffs, etc) to heavy frying pan lids, all
while maintaining their position and posture which is vital in numerous
applications that require precise positioning or careful manipulation.Comment: 8 pages. Accepted at IEEE IROS 2023. An accompanying video is
available at https://www.youtube.com/watch?v=RAO7Qb2ZGN
A feasibility study of the measurement of Higgs pair creation at a Photon Linear Collider
We studied the feasibility of the measurement of Higgs pair creation at a
Photon Linear Collider (PLC). From the sensitivity to the anomalous
self-coupling of the Higgs boson, the optimum collision energy
was found to be around 270 GeV for a Higgs mass of 120 GeV/. We found that
large backgrounds such as and
, can be suppressed if correct assignment of tracks to parent
partons is achieved and Higgs pair events can be observed with a statistical
significance of by operating the PLC for 5 years.Comment: 7 pages, 8 figures, 5 table
Manipulation of Non-classical Atomic Spin States
We report successful manipulation of non-classical atomic spin states. We
generate squeezed spin states by a spin quantum nondemolition measurement, and
apply an off-resonant circularly-polarized light pulse to the atoms. By
changing the pulse duration, we have clearly observed a rotation of anisotropic
quantum noise distribution in good contrast with the case of manipulation of a
coherent spin state where the quantum noise distribution is always isotropic.
This is an important step for quantum state tomography, quantum swapping, and
precision spectroscopic measurement
Exchange Anisotropy of L12-Mn3X (X=Ir, Rh, Ru)/Co-Fe Bilayers
科研費報告書収録論文(課題番号:17350003/研究代表者:美齊津文典/金属-分子気相錯体イオンにおける特異な光誘起解離反応の動力学の解明とその制御
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