Internal bremsstrahlung from Pr-143

1977 ◽  
Vol 283 (2) ◽  
pp. 145-148 ◽  
Author(s):  
D. G. S. Narayana ◽  
K. Narasimha Murty ◽  
V. V. V. Subrahmanyam
Keyword(s):  
Internal Bremsstrahlung

scholarly journals Spin-one dark matter and gamma ray signals from the galactic center

2020 ◽  
Vol 2020 (8) ◽  
Author(s):  
H. Hernández-Arellano ◽  
M. Napsuciale ◽  
S. Rodríguez
Keyword(s):  
Dark Matter ◽  
Cross Section ◽  
Gamma Ray ◽  
Galactic Center ◽  
Photon Emission ◽  
Scalar Coupling ◽  
Initial State ◽  
Internal Bremsstrahlung ◽  
Resonance Effects ◽  
State Radiation

Abstract In this work we study the possibility that the gamma ray excess (GRE) at the Milky Way galactic center come from the annihilation of dark matter with a (1, 0) ⊕ (0, 1) space-time structure (spin-one dark matter, SODM). We calculate the production of prompt photons from initial state radiation, internal bremsstrahlung, final state radiation including the emission from the decay products of the μ, τ or hadronization of quarks. Next we study the delayed photon emission from the inverse Compton scattering (ICS) of electrons (produced directly or in the prompt decay of μ, τ leptons or in the hadronization of quarks produced in the annihilation of SODM) with the cosmic microwave background or starlight. All these mechanisms yield significant contributions only for Higgs resonant exchange, i.e. for M ≈ MH /2, and the results depend on the Higgs scalar coupling to SODM, gs. The dominant mechanism at the GRE bump is the prompt photon production in the hadronization of b quarks produced in $$ \overline{D}D\to \overline{b}b $$ D ¯ D → b ¯ b , whereas the delayed photon emission from the ICS of electrons coming from the hadronization of b quarks produced in the same reaction dominates at low energies (ω < 0.3 GeV ) and prompt photons from c and τ , as well as from internal bremsstrahlung, yield competitive contributions at the end point of the spectrum (ω ≥ 30 GeV ). Taking into account all these contributions, our results for photons produced in the annihilation of SODM are in good agreement with the GRE data for gs ∈ [0.98, 1.01] × 10−3 and M ∈ [62.470, 62.505] GeV . We study the consistency of the corresponding results for the dark matter relic density, the spin-independent dark matter-nucleon cross-section σp and the cross section for the annihilation of dark matter into $$ \overline{b}b $$ b ¯ b , τ+τ−, μ+μ− and γγ, taking into account the Higgs resonance effects, finding consistent results in all cases.

Effects of Internal Bremsstrahlung on Tritium Profile Reconstruction in BIXS Measurements

2016 ◽  
Vol 70 (3) ◽  
pp. 461-467 ◽  
Author(s):  
Zhilin Chen ◽  
Masao Matsuyama ◽  
Shinsuke Abe ◽  
Shuming Peng
Keyword(s):  
Internal Bremsstrahlung ◽  
Profile Reconstruction

Probability of Production of Internal Bremsstrahlung AccompanyingβDecay fromSr90andY90

1971 ◽  
Vol 4 (6) ◽  
pp. 2144-2149 ◽  
Author(s):  
B. Singh ◽  
Shetha S. Al-Dargazelli
Keyword(s):  
Internal Bremsstrahlung

Internal bremsstrahlung accompanying the positon decay of 82Rb

1969 ◽  
Vol 138 (3) ◽  
pp. 631-643 ◽  
Author(s):  
Roland Akselsson ◽  
Börje Persson
Keyword(s):  
Internal Bremsstrahlung

Internal Bremsstrahlung Accompanying the Electron-Capture Decay ofMn54

1969 ◽  
Vol 188 (4) ◽  
pp. 1683-1685 ◽  
Author(s):  
H. LANCMAN ◽  
JACOB M. LEBOWITZ
Keyword(s):  
Electron Capture ◽  
Electron Capture Decay ◽  
Internal Bremsstrahlung

Internal bremsstrahlung accompanying the second-forbidden beta decay inCs137

1977 ◽  
Vol 15 (6) ◽  
pp. 2195-2199 ◽  
Author(s):  
P. Venkataramaiah ◽  
B. Sanjeevaiah
Keyword(s):  
Beta Decay ◽  
Internal Bremsstrahlung

Internal bremsstrahlung from 6He

1965 ◽  
Vol 68 (1) ◽  
pp. 17-35 ◽  
Author(s):  
J.K. Bienlein ◽  
Frances Pleasonton
Keyword(s):  
Internal Bremsstrahlung

scholarly journals Internal bremsstrahlung in neutralino annihilation: revised impact on indirect detection from γ-rays

2011 ◽  
Vol 315 ◽  
pp. 012018
Author(s):  
M Cannoni ◽  
M E Gómez ◽  
M A Sánchez-Conde ◽  
F Prada ◽  
O Panella
Keyword(s):  
Indirect Detection ◽  
Internal Bremsstrahlung ◽  
Γ Rays
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