Search

Axion-like particles (ALPs) are new particles that extend beyond the standard model (SM) and are highly motivated. When considering ALPs within an effective field theory framework, their couplings with SM particles can be studied independently. It is a daunting task to search for GeV-scale ALPs coupled to muons in collider experiments because their coupling is proportional to the muon mass. However, a recent study by Altmannshofer, Dror, and Gori (2022) highlighted the importance of a four-point interaction, $W$-$\mu$-$\nu_{\mu}$-$a$, as well as interactions from the chiral anomaly which couplings are not dependent on the muon mass. These interactions provide a new opportunity to explore muonphilic ALPs ($\mu$ALPs) at the GeV scale. We have explored various $\mu$ALPs production channels at muon colliders with $\mu$ALPs decaying into a pair of muons. Especially, we found a pair of neutrinos accompanied by a $\mu$ALP is a most effective channel to search for $\mu$ALPs in the electrowek violating (EWV) scenario. In contract, a photon plus a $\mu$ALP becomes a better channel to search for $\mu$ALPs in the electroweak preserving (EWP) scenario because there is no $W$-$\mu$-$\nu_{\mu}$-$a$ interaction in this situation. Most importantly, we found that the future bounds for $\mu$ALPs in EWV scenario are much stronger than the ones in EWP scenario and the existing bounds for exploring $\mu$ALPs with $1$ GeV $\leq m_a\lesssim M_W$., Comment: 37 pages, 12 figures, 10 tables; To be published in Chinese Physics C

Additional file 1. The uncropped gels for Western blots in this study.

In the space rendezvous and docking, real-time measurement of the position and attitude between the visual sensor on the tracking spacecraft and the characteristic target on the target spacecraft is needed, and the premise is to quickly and accurately identify the feature targets. In this paper, a fast recongnition algorithm of four concentric ring feature targets is proposed. Firstly, the algorithm uses the optimized Otsu for image segmentation. Then the contour is extracted by the connected region recognition method. Finally, according to the relationship between the circumference and the area of the circle, the circle is determined, and the least square method is used to fit the circle and extract the center of the feature circle. The experimental results show that the method can recognize feature targets accurately and quickly within 2 m distance, and the computational efficiency to the method is improved by nearly 10 times compared with the pre-optimization algorithm.

特別講義：Politics of Sound: Cinematic Soundscape and Social Mobilization「音声のポリティックス：映画のサウンドスケープと社会的動員」, 講師：張泠（ニューヨーク州立大学パーチェス校映画学准教授）, 日時：2020年9月25日（金）, 会場：オンライン

Additional file 1. The tables of primers and probes used to detect co-infection respiratory viruses, reference strain of HAdV strains, clinical characteristics of children infected with different HAdV genotypes.

This paper is aiming at reviewing the existing literatures, both empirical and theoretical ones, in the field of cultural economics, as well as providing an annotated bibliography on the theoretical researches about the consumption of cultural goods.

This paper comes up with a new heating system based on Internet of Things in order to get rid of Chinese current situation where existing systems cost much energy and manpower, work inefficient and rigid, and fall behind the times. The following is the main ideas of our new system: This system installs some special temperature sensors. There is LCD Display on the temperature sensor, which is used to inform users about information of indoor temperature, outdoor temperature and payment. According to requirement of themselves, users could select different heating mode by using APP provided by this system to send commands. This system installs some network controller in each layer of housing estate, which could gather the information of the temperature sensors, users and the ball valve controllers and send information to IPC. At the same time, the network controllers would send commands to the ball valve controllers so as to control heating, and IPC would send information to the server. In addition, users could pay the fees of heating by using APP. This paper mainly discusses and introduces design and realization of this new system.

In order to reduce the surface flaw detection cost and time consuming of large area steel iron surface (such as the surface of large storage tank or ship, etc), solve the existing wheeled magnetic adsorption technology problems of wall climbing robot, a kind of wheeled magnetic wall climbing robot is designed. Unique adsorption unit and innovation design of magnetic circuit make the wheeled wall climbing robot has a large carrying capacity. The robot uses LPC1768 chip as the control center. Divided into walking control, camera control, the other action control. Robot users through wireless handle to control the robot walking and action in the surface of steel vertical and accept the robot feedback information through a ground station. This paper mainly introduces the design of each module, gives the concrete design scheme of mechanical structure, hardware circuit and software.

This paper regards China Higher Animation Education as important part of animation industry cluster on the basis of Industrial Cluster Theory. Firstly, the paper discusses the Supply-Demand problem from the perspective of world animation education mode against the Structural Contradiction of animation talent through analyzing the current state of China Higher Animation Education and animation talent training, and the developing phase of China animation industry. Secondly, the paper argues that higher animation education should supply qualified animation talent in accordance with the demand of animation industry by practical integration of animation ontology, discipline scope, talent structure in order to achieve the harmonious interaction between university and animation industry. At last, this paper indicates the development countermeasure of higher animation education, creating a new path for China Higher Animation Education and talent training.