Radiation astronomy/Mesons/Quiz

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Event display from the CMS experiment shows examples of collisions that produced candidates for the rare decay of the Bs0 meson. Credit: CMS Collaboration.{{fairuse}}

Meson astronomy is a lecture from the radiation astronomy department. It is currently under development for possible inclusion in the advanced radiation astronomy course: principles of radiation astronomy.

“The discovery [recorded in the event display on the right] came about when two Large Hadron Collider (LHC) experiments recently combined their results and found overwhelming evidence of an extremely rare decay of a particle known as the Bs0 meson.”[1]

The rare decay of the Bs0 meson is into two muons.[1]

"Bs0 mesons oscillate between their matter and their antimatter counterparts, a process first discovered at Fermilab in 2006."[1]

You are free to take this quiz based on meson astronomy at any time.

To improve your score, read and study the lecture, the links contained within, listed under See also, External links and in the {{principles of radiation astronomy}} and {{radiation astronomy resources}} templates. This should give you adequate background to get 100 %.

As a "learning by doing" resource, this quiz helps you to assess your knowledge and understanding of the information, and it is a quiz you may take over and over as a learning resource to improve your knowledge, understanding, test-taking skills, and your score.

Suggestion: Have the lecture available in a separate window.

To master the information and use only your memory while taking the quiz, try rewriting the information from more familiar points of view, or be creative with association.

Enjoy learning by doing!

Quiz[edit | edit source]


1 Yes or No, A meson is a subatomic particle that is intermediate in mass between an electron and a proton.


2 True or False, Like all elementary particles, the meson has a corresponding antiparticle of opposite spin but equal mass and charge.


3 What negatively charged particles may be used as tracers of cosmic magnetic fields?

4 True or False, The radius of the proton is 4 percent smaller than previously estimated.


5 Yes or No, Each type of meson has a corresponding antiparticle (antimeson).


6 Complete the text:

Charged-current charged pion production is a process in which a

interacts with an atomic

and produces a

, a charged

and recoiling nuclear fragments.

7 True or False, The phenomenology of cosmic ray cascades reflects in an essential way processes governed by the weak force.


8 Complete the text:

Muons are produced, along with other particles, when

interact with

in the Earth's atmosphere to produce

of secondary particles.

9 True or False, Mesons inherit the high energy of the parent cosmic rays.


10 Yes or No, A meson apparently transmits the strong interaction that binds nucleons together in the atomic nucleus.


Hypotheses[edit | edit source]

  1. Proving mesons are occurring astronomically requires demonstrating that products of such reactions exist.

See also[edit | edit source]

References[edit | edit source]

External links[edit | edit source]

{{Principles of radiation astronomy}}