Do you want to publish a course? Click here

Research about the deviation from the Standard Model by studying the elastic scattering of electron neutrino mass (anti electron neutrino mass) on the electron

البحث في الإنحراف عن النموذج المعياري من خلال دراسة التبعثر المرن للنيوترينو الإلكتروني ( النيوترينو الإلكتروني المضاد) الكتلوي على الإلكترون

894   0   18   0 ( 0 )
 Publication date 2014
  fields Physics
and research's language is العربية
 Created by Shamra Editor




Ask ChatGPT about the research

In this research the differential cross section for elastic scattering of electron neutrino (or anti neutrino) on the electron was calculated within and outside the frame work of the Standard Model (SM) of elementary particle physics. The mathematical relation of deviation from this model was also calculated. This study showed that there is a deviation from the standard model of the order for the electron neutrino flavor. The reference [16] was not able to appear it quite clearly and independently, but It showed the deviation on average for all flavors of neutrino together. Due to this deviation is very small, one can be neglected and therefore do not need to expand the framework of the standard model to include the electron neutrino mass, because in this case, it is located inside its framework.

References used
WEINHEIMER, CH. Direct Neutrino Mass Experiments: Present and Future, XXth International Conference on Neutrino Physics and Astrophysics, 2002, Munich, Germany: http://neutrino2002. ph.tum.de/Germany
KRAUS, CH. et al., Final Results from phase II of the Mainz Neutrino Mass Search in Tritium  Decay, Eur. Phys. J. C40, 2005, pp. 447-468, rXiv:he-pex/ 0412056v2
DATAR, V.M., Direct Neutrino Mass Measurements, Nuclear Physics Division Bhabha Atomic Research Centre, Trombay, Mumbai 400 085,( India), Proc Indian Natn Sci Acad, 70, A, No.1, January 2004, pp. 89–94
NAZIH HAIDER. et al., Neutrino Mass and the Need to Expand the Standard Model of Elementary Particle Physics (SM), International Journal of Physics and Applications. ISSN 0974-3103 Volume 3, Number 3 (2011), pp. 279-282
GLASHOW, S.L, nucl.Phys.22(1961)579; SAlAR, A. and WARD, c.,Phys. Left. (1964)168; WEINBERG, S., Phys,Rev.lett.19(1967)1264
rate research

Read More

The effective differential cross-section of the studied interaction was calculated within and outside the standard model. radiative corrections resulting from the introduction of scalar (S), pseudo scalar (P) and tensor (T) components into amplitude of interaction were calculated in two deferent ways. It show that it is only related with square of coupling constants, . The study discussed the durability of the standard model to expand the amplitude of elastic scattering of neutrino on the electron, using the experimental values of the newly obtained coupling constants from the TEXONO, LSND experiments.
In this research, we reviewed how to get the relationship of the neutrino oscillation probability in the two flavor approximation, and tested the theoretical model of the oscillation solution. We show that the oscillation probability of neutrino re lates with neutrino energy, length of the baseline (the distance between the source and the detector), mixing angle  , and square mass difference 2 2 2 1 2 12 m  m m . This research shows that in order to occur the oscillation of neutrino, it must be at least one of the mass states different of zero. This means that the relationship 0 2 12 m  must be verify. In other words neutrino must have non zero mass. This result holds a huge physical importance. The first regards the Standard Model of elementary particles, which considered neutrino massless. The second regards the OPERA experiment, where neutrino have non zero mass, and cannot spreading fast equal to the speed of light and so this does not agree with the experience of OPERA, which found that the neutrino spreading faster than the speed of light in a vacuum.
Young sun flower plants were exposed to ultraviolet radiation of the type UV-B (295 nm) for 3 days (2 hours per day) with or without excluding the UV-radiations using polyethylene layers (blue and transparent) (0.5 mm thick). The amount of photosyn thesis pigments was measured whereby a variation in the chlorophyll contents. Chlorophyll a (chl.a) was noticed at these rates (without covering 19.59%, transparent polyethylene 3.40%, blue polyethylene 1.66%), chlorophyll b (chl.b) at rates (7.81, 25.13, 22.79%) and the total chlorophyll content (2.88, 21.76, 20.53%), while the amount of carotenoid pigments has increased in the studied samples (24.45, 19.23, 17.32%). A decrease in the rate of photosynthetic electron transport has also been noticed (88.04, 78.71, 58.81%) in the plant samples exposed to ultraviolet radiation (on the third day) without UV excluding and with transparent and blue polyethylene successively. All results were compared to the sample which was not exposed to radiation. All results indicate the negative effect of ultraviolet radiation on the chlorophyll content and the rate of photosynthetic electron transport, therefore, on photosynthesis and the productivity of sun flower plants. They also point out the importance of carotenoid pigments in protecting chlorophyll pigments from the negative effects of this radiation. Results showed the clear positive effect of polyethylene layers, specifically the blue one, in protecting plants against this radiation.
In this work, using a scintillation detector with Strontium-90 source as a try to measure the electronic neutrino mass from a simple technique and different from what is used in this area where current techniques used are very complex and require s ubstantial amounts. Also, detector calibration (to find the straight calibration equation), in addition to identified the maximum energy of β- particles (electrons), experimentally, by selection the channel number and then finding the energy value from the calibration equation (as a straight line). We have studied the disintegration changed energy with absorbent material which is an aluminum slices that have different thickness. We have observed the decrease in the values of the maximum energy of the electrons with increases the thickness of the slices. The energy changes with thickness as: E = f (x), (a straight line have a negative inclination). Applying Fermi 's theory and Kurie's plot allowed to find the maximum energy of disintegration electrons (1697,58 keV), this value is so close to experimental value (1653,45 keV), with dubity (2,6%) We have found that the electronic mass neutrino mass is almost to be non-existent, or we can said that the Strontium-90 disintegration does not allow to measure mass neutrino mass accurately, this is due to the high value of the disintegration energy of the Strontium- 90 isotope.
We have studied in this paper, investigated the influence of an electron beam on a dense warm inhomogeneous plasma, and the instability resulting in this system, through studying of the influence of plasma density variation on the beam-plasma insta bility growth. Where we considered the plasma density is in the same order of Fermi gas, and we considered the model of homogeneous cold beam-inhomogeneous warm plasma system, with small phase velocity in compared with the case of existence of an external magnetic field. We derived the differential equations that describe this system in the case of collision plasma because of its high density, and we derived the differential equation that expresses the energy absorbed in the wholesale and we solved this equation then we drew the suitable graphics using Mathcad program, discussed, and analyzed the results that we reached. Results indicated an amplification of outcome waves in wholesale because of the absorbed energy and instability increasing in the system.

suggested questions

comments
Fetching comments Fetching comments
mircosoft-partner

هل ترغب بارسال اشعارات عن اخر التحديثات في شمرا-اكاديميا