Statistics for Particle: Lecture 2

Click here to take the quiz!

General Stats
Answer Stats
Score Distribution
Your Score History

General Stats

This quiz has been taken 9 times
(7 since last reset)
The average score is 28 of 28

Answer Stats

Hint	Answer	% Correct
Define the baryon number in terms of number of quarks and antiquarks, defined as q and p respectively	1/3 * (q-p)	100%
Express P-parities in terms of L and intrinsic P-parities	(-1)^(L)*(P intrinsic)	100%
Express C-parities in terms of L and S for a fermion-antifermion pair	(-1)^(L+S)	100%
What is the magnitude of a lepton's spin (generally)?	A half-integer	100%
What is the magnitude of a boson's spin (generally) ?	An integer	100%
Define the spin of a particle	A particle’s angular momentum in its own rest frame.	100%
List all internal quantum numbers	Charge, Baryon number and Lepton number	100%
Give an example for a plane wave of a fermion (in terms of q, r and h bar)	e^(i(q.r)/h bar)	100%
True or false: The lepton number for leptons and antileptons is the same?	False	100%
What is the time in this S' frame? Give your answer in terms of a generic x, gamma, v, c and t	(gamma)(t-(x*v)/(c^2))	100%
If we are in a frame S we are travelling in the x-direction at relativistic speeds what is our distance travelled in the S' frame? Give your answer in terms of a generic x, gamma, v and t	(gamma)(x-vt)	100%
What is g in a calculation for the potential of a weak interaction?	Generic coupling constant	100%
In layman's terms describe what a Born-approximation shows	How much of the particle’s wave function overlaps with the potential	100%
Express J^2 in terms of J and h bar	J(J+1)(h bar)^2	100%
How do we obtain the potential?	Klein-Gordon equation	100%
What are the smallest and largest values of total angular momentum (in terms of L and S)?	\|L-S\| and L+S	100%
Finish this sentence: The ____ __ the ________ particle is equal to the _________ ____ of the decay products.	mass of, decaying and invariant mass	100%
Finish the sentence: CP violation causes a ______-__________ _________.	matter, antimatter and asymmetry	100%
Express J_z in terms of M and h bar	M(h bar)	100%
Give the definition of the invariant mass	sqrt((E^2-p^2*c^2)/c^4)	100%
Finish Noether's first theorem: Every differentiable ________ of the ______ __ _ ________ ______ has a corresponding ____________ ___.	symmetry, action of a physical system and conservation law	100%
What does q represent in the above equation?	The momentum transferred to the fermion	100%
What is needed to calculate the interaction probability?	The potential	100%
What is the relationship for the probability of a process to occur with its constant at the vertex in question?	The probability is proportional to the constant squared	100%
True or false: All these internal quantum numbers are always conserved?	True	100%
True or false: Fermions and antifermions have opposite intrinsic parities?	True	100%
True or false: Bosons have even wave functions and leptons have odd wave functions?	True	100%
What is the mass of a photon?	Zero	100%