Dark matter

The purposes of research: Searching of dark matter in the proposed model called the simple 3-3-1 model (S331M); solving the neutrino mass problem and determine the Higgs spectrum in the G221 model with lepton-flavor non-universality.

34p capheviahe27 23-02-2021 10 4   Download

Resolve the neutrino mass problem. Parameterize the parameters in the model 3−2−3−1 to seek for dark matter for each version of the model with q=0 and q=−1. Research for Z1 and Z01 at LEPII and LHC. Survey in detail the mass of gauge bosons, Higgs bosons, flavor-changing neutral current in the model 3−3−3−1 and calculate the branch ratio of the decay process mu - ey, u - 3e in the model.

25p larachdumlanat129 20-01-2021 18 4   Download

Despite the prediction of the Higgs boson at Large Hadron Collider (LHC) in the CERN in 2012 after it has been theorized for over 50 years, however, the Standard model (SM) still can not explain the mass of neutrinos; the hierarchy problem; the contribution of dark energy, dark matter and CP violation in cosmology.

7p tamynhan9 02-12-2020 9 1   Download

Axion production ina Axion production in unpolarized and polarized ye− collision are considered in detail using the Feynman diagram method. The cross-sections are presented and numerical evaluations are given. The results show that the axion can be dark matter of the universe. Some estimates for experimental conditions are given from our results. unpolarized and polarized ye− collision

7p tamynhan8 04-11-2020 14 2   Download

We find that this model can only fit the observational constraints if there is a cosmological constant and the presence of non-decaying cold dark matter in addition to decaying cold dark matter. Thus, although this remains a viable model, it is only able to partially explain the observed cosmic acceleration.

9p tamynhan8 04-11-2020 14 2   Download

Based on our results we comment on the general implications of our study for the production of axion in process annihilation of ordinary matter and properties of axion in process collision of its with ordinary matter, and also for signature of axion in the dark matter of universe.

11p tamynhan8 04-11-2020 13 1   Download

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Shedding new light on genetic dark matter

3p panasonic02 15-12-2011 30 4   Download

In this lesson we will consider techniques to interface to a TV screen or, for that matter, to any display that can accept a standard composite video signal. • It will be a good excuse to use new features of several peripheral modules of the PIC24 and review new programming techniques. • Our first project objective will be to get a nice dark screen (a well-synchronized video frame), but we will soon fill it up with several entertaining graphical applications.

20p manhmeo1761994 26-04-2011 79 13   Download

Rất nhiều người chưa có nghiên cứu nhiều về vũ trụ học thường nhầm lẫn 2 khái niệm này, coi chúng là một. Thực chất vật chất tối (dark matter) và năng lượng tối (dark energy) là 2 khái niệm hoàn toàn độc lập từ lịch sử đên bản chất. Chúng ta sẽ nói trước tiên về vật chất tối (dark matter) Năm 1933, Fritz Zwicky phát hiện ra sự xuất hiện của loại vật chất này khi đo vận tốc của các thiên hà trong quần thiên hà Coma. Người ta thường đo khối lượng của một thiên hà...

5p convert111 25-03-2011 210 36   Download