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    hi, can someone explain to me how to do these question for the particle physics topic pls. especially question c. i read the examiner's report and idk how to do the question. thank you!!
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    (Original post by Exotic-L)
    hi, can someone explain to me how to do these question for the particle physics topic pls. especially question c. i read the examiner's report and idk how to do the question. thank you!!
    think about it in terms of quarks. a pion plus is up anti-down, so it annihilates with a down quark, and the up quark becomes part of the new particle. This means a neutron must become a proton.
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    (Original post by Kyx)
    think about it in terms of quarks. a pion plus is up anti-down, so it annihilates with a down quark, and the up quark becomes part of the new particle. This means a neutron must become a proton.
    thank you soo much for the reply, but i dont understand where the down quark comes from.
    could you explain this to me pls? thank you
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    (Original post by Exotic-L)
    thank you soo much for the reply, but i dont understand where the down quark comes from.
    could you explain this to me pls? thank you
    the neutron in the nucleus
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    (Original post by Kyx)
    the neutron in the nucleus
    thank you! but how can u now calculate the A and Z of the question?
    using this info
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    (Original post by Exotic-L)
    thank you! but how can u now calculate the A and Z of the question?
    using this info
    The number of protons and neutrons is unchanged
    the number of protons increased by one
 
 
 
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