Results 141 to 150 of about 2,258,607 (385)
, 2014 Proceeding of XXXIV Physics in Collision Symposium, Bloomington, Indiana, September 16--20 ...
openaire +3 more sources
Exploring Dark Photon Production and Kinetic Mixing Constraints in Heavy‐Ion Collisions
Astronomische Nachrichten, EarlyView.ABSTRACT Vector U‐bosons, often referred to as “dark photons,” are potential candidates for mediating dark matter interactions. In this study, we outline a procedure to derive theoretical constraints on the upper bound of the kinetic mixing parameter ϵ2MU$$ {\upvarepsilon}^2\left({M}_U\right) $$ using dilepton data from heavy‐ion from SIS to RHIC ...
Adrian William Romero Jorge +3 more
wiley +1 more source
Behavioral Sciences, 2013 We describe similarities in the ontology of quantum physics and of Carl Gustav Jung’s psychology. In spite of the fact that physics and psychology are usually considered as unrelated, in the last century, both of these disciplines have led at the same ...
Lothar Schäfer, Diogo Valadas Ponte
doaj +1 more source
How to use molecular clouds to study the propagation of cosmic rays in the Galaxy [PDF]
, 2010 Observations of molecular clouds in the gamma ray domain provide us with a tool to study the distribution of cosmic rays in the Galaxy. This is because cosmic rays can penetrate molecular clouds, undergo hadronic interactions in the dense gas, and produce neutral pions that in turn decay into gamma rays.
arxiv +1 more source
High energy astroparticle physics for high school students
, 2015 The questions about the origin and type of cosmic particles are not only fascinating for scientists in astrophysics, but also for young enthusiastic high school students.
Bretz, Hans-Peter +7 more
core +2 more sources
A Slowly Pulsating Run‐Away B Star at High Galactic Latitude Ejected From a Spiral Arm
Astronomische Nachrichten, EarlyView.ABSTRACT We report the discovery of the young B6 V run‐away star LAMOST J083323.18 + 430825.4, 2.5 kpc above the Galactic plane. Its atmospheric parameters and chemical composition are determined from LAMOST spectra, indicating normal composition. Effective temperature (Teff$$ {T}_{\mathrm{eff}} $$ = 14,500$$ \mathrm{14,500} $$ K) and gravity (logg ...
Ulrich Heber +3 more
wiley +1 more source
Introduction to Astronomy with Radioactivity
, 2010 In the late nineteenth century, Antoine Henri Becquerel discovered radioactivity and thus the physics of weak interactions, well before atomic and quantum physics was known.
Diehl, Roland
core +1 more source
PHYSICS WITH COSMIC NEUTRINOS, PEV TO ZEV [PDF]
Neutrinos and Implications for Physics Beyond the Standard Model, 2003 Neutrinos offer a particularly promising eye on the extreme Universe. Neutrinos are not attenuated by intervening radiation fields such as the Cosmic Microwave Background, and so they are messengers from the very distant and very young phase of the universe. Also, neutrinos are not deflected by cosmic magnetic fields, and so they should point to their
openaire +4 more sources
ChemPhotoChem, EarlyView.We introduce the three‐angle method for broadband fluorescence upconversion spectroscopy. This method involves recording and averaging spectrally resolved upconversion signals at three crystal angles, achieving broader spectral coverage and better signal‐to‐noise levels.
Marco Kapitzke +4 more
wiley +1 more source
Cosmic Rays and Gamma Ray Bursts From Microblazars [PDF]
arXiv, 1998 Highly relativistic jets from merger and accretion induced collapse of compact stellar objects, which may produce the cosmological gamma ray bursts (GRBs), are also very efficient and powerful cosmic ray accelerators. The expected luminosity, energy spectrum and chemical composition of cosmic rays from Galactic GRBs, most of which do not point in our ...
arxiv