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Particle Physics
With a bigger, better, and more sensitive detector, the XENON collaboration joins LZ and PANDA-X in constraining WIMP dark matter.
If there are three neutrino species, all with different masses, then how is energy conserved when they oscillate from one flavor to another?
We can't go back to the Big Bang, nor ahead to the heat death of the Universe. Nevertheless, here are today's natural temperature extremes.
If you're a massless particle, you must always move at light speed. If you have mass, you must go slower. So why aren't any neutrinos slow?
Protons and neutrons are held together by the strong force: with 3 colors and 3 anticolors. So why are there only 8 gluons, and not 9?
When you combine the Uncertainty Principle with Einstein's famous equation, you get a mind-blowing result: Particles can come from nothing.
Are quantum fields real, or are they simply calculational tools? These 3 experiments show that if energy is real, so are quantum fields.
Recent measurements of subatomic particles don't match predictions stemming from the Standard Model.
Apart from the energy needed to flip the switch, no other energy is needed to transmit the information.
When you bring two fingers together, you can feel them "touch" each other. But are your atoms really touching, and if so, how?
"Once quantum mechanics is applied to the entire cosmos, it uncovers a three-thousand-year-old idea."
It isn't just identical particles that can be entangled, but even those with fundamentally different properties interfere with each other.
The difference between predictions and observations of the magnetic properties of muons suggests a mystery for the Standard Model.
For years and over three separate experiments, "lepton universality" appeared to violate the Standard Model. LHCb at last proved otherwise.
Every proton contains three quarks: two up and one down. But charm quarks, heavier than the proton itself, have been found inside. How?
A concept known as "wave-particle duality" famously applies to light. But it also applies to all matter — including you.
The quantum world is one in which rules that are completely foreign to our everyday experience dictate bizarre behavior.
You are trapped in time. You never live in the world as it is but only as you experience it as it was.
IceCube just found an active galaxy in the nearby Universe, 47 million light-years away, through its neutrino emissions: a cosmic first.
Practically all of the matter we see and interact with is made of atoms, which are mostly empty space. Then why is reality so... solid?