6 papers
Extremely high-energy bremsstrahlung in matter
Peter Arnold, Joshua Bautista, Omar Elgedawy +1
The theory of bremsstrahlung by extremely high energy electrons passing through ordinary matter has been qualitatively incomplete. We revisit the suppression of bremsst…
Calculating extremely high energy bremsstrahlung in matter
Peter Arnold, Joshua Bautista, Omar Elgedawy +1
Ultra-relativistic electrons initiate electromagnetic showers in ordinary matter that evolve through bremsstrahlung and pair production. At very high energy, the quantum mechanical…
Revisiting extremely high energy QED bremsstrahlung in matter: large modifications to the LPM effect
Peter Arnold, Joshua Bautista, Omar Elgedawy +1
Very high energy electrons initiate electromagnetic showers in ordinary matter that branch and multiply through bremsstrahlung and pair production. At extremely high energies, the…
Are Parton Showers in a Quark-Gluon Plasma Strongly Coupled? A Theorist's Test
Peter Arnold, Omar Elgedawy, Shahin Iqbal
We study whether in-medium showers of high-energy quarks and gluons can be treated as a sequence of individual splitting processes or whether there is significant quantum overlap b…
Are in-medium quark-gluon showers strongly coupled? Results in the large- limit
Peter Arnold, Omar Elgedawy, Shahin Iqbal
Inside a medium, showers originating from a very high energy particle develop via medium-induced splitting processes such as bremsstrahlung and pair production. During shower devel…
Strongly vs. weakly coupled in-medium showers: energy stopping in large- QED
Peter Arnold, Omar Elgedawy, Shahin Iqbal
Inside a medium, showers originating from a very high-energy particle may develop via medium-induced splitting processes such as hard bremsstrahlung or pair production. During show…