scholarly journals ULTRA-HIGH ENERGY NEUTRINO DISPERSION IN PLASMA AND RADIATIVE TRANSITION νL → νR+γ

2011 ◽  
Vol 26 (27n28) ◽  
pp. 4773-4784 ◽  
Author(s):  
A. V. KUZNETSOV ◽  
N. V. MIKHEEV ◽  
A. M. SHITOVA
Keyword(s):  
Z Boson ◽  
Energy Operator ◽  
Local Limit ◽  
Radiative Transition ◽  
High Energy ◽  
Kinematical Region ◽  
Additional Energy ◽  
High Energy Neutrino ◽  
Self Energy ◽  
Energy Neutrino

Qualitative analysis of additional energy of neutrino and antineutrino in plasma is performed. A general expression for the neutrino self-energy operator is obtained in the case of ultra-high energies when the local limit of the weak interaction is not valid. The neutrino and antineutrino additional energy in plasma is calculated using the dependence of the W- and Z-boson propagators on the momentum transferred. The kinematical region for the neutrino radiative transition (the so-called "neutrino spin light") is established for some important astrophysical cases. For high energy neutrino and antineutrino, dominating transition channels in plasma, νe + e+ → W+, [Formula: see text] and [Formula: see text], are indicated.

scholarly journals Quantifying uncertainties in the high-energy neutrino cross-section

Pramana ◽  
2012 ◽  
Vol 79 (5) ◽  
pp. 1301-1308 ◽  
Author(s):  
A COOPER-SARKAR ◽  
P MERTSCH ◽  
S SARKAR
Keyword(s):  
Cross Section ◽  
High Energy ◽  
High Energy Neutrino ◽  
Energy Neutrino ◽  
Neutrino Cross Section

scholarly journals Current and target jets produced in high energy neutrino-deuterium interactions

1980 ◽  
Vol 97 (2) ◽  
pp. 325-328 ◽  
Author(s):  
T. Kitagaki ◽  
S. Tanaka ◽  
H. Yuta ◽  
K. Abe ◽  
K. Hasegawa ◽  
...  
Keyword(s):  
High Energy ◽  
High Energy Neutrino ◽  
Energy Neutrino

scholarly journals Modelling the coincident observation of a high-energy neutrino and a bright blazar flare

2018 ◽  
Vol 3 (1) ◽  
pp. 88-92 ◽  
Author(s):  
Shan Gao ◽  
Anatoli Fedynitch ◽  
Walter Winter ◽  
Martin Pohl
Keyword(s):  
High Energy ◽  
High Energy Neutrino ◽  
Energy Neutrino

scholarly journals New vistas in charm production

2019 ◽  
Vol 206 ◽  
pp. 02004
Author(s):  
Antoni Szczurek
Keyword(s):  
Large Deviations ◽  
Transition Probabilities ◽  
High Energy ◽  
Lhcb Collaboration ◽  
Charm Production ◽  
High Energy Neutrino ◽  
Neutrino Production ◽  
Energy Neutrino ◽  
Low Energies

We discuss some new aspects of charm production trigerred by recent observations of the LHCb collaboration. The LHCb collaboration measured small asymmetries in production of D+D−mesons as well as $ D_s^ + D_s^ - $ mesons. Is this related to initial quark/antiquark asymmetries in the proton ? Here we discuss a scenario in which unfavored fragmentations $ q/\bar {q} \to D $ and $ s/\bar {s} \to D_s $ are responsible for the asymmetries. We fix the strength of such fragmentations – transition probabilities, by adjusting to the size of the LHCb asymmetries. This has consequences for production of D mesons in forward directions (large xF ) as well as at low energies. Large asymmetries are predicted then in these regions. We present here some of our predictions. Consequences for high-energy neutrino production in the atmosphere are discussed and quantified. The production of Λc baryon at the LHC is disussed. Large deviations from the independent-parton fragmentation picture are found.

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