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A comment on Subatomic particle seen changing to antiparticle and back for the first time. Parent comment

Re:Subatomic particle seen changing to antiparticle and back... by R0b0t1 on Saturday June 12, 2021 @04:07PM (#27487106)
The momentum doesn't need to change. If the mass decreases it can just go faster.
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Re:Subatomic particle seen changing to antiparticle and back... by tzs on Saturday June 12, 2021 @04:49PM (#27487334)
If the mass changes from m0 to m1, the velocity has to change by a factor of m0/m1 to conserve momentum. But to conserve kinetic energy speed has to change by a factor of sqrt(m0/m1).

Something else has to be involved to reconcile these conflicting velocity constraints.

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Re:Subatomic particle seen changing to antiparticle and back... by kukx on Saturday June 12, 2021 @06:21PM (#27487885)
Does the energy need to be conserved in the same form?
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Re:Subatomic particle seen changing to antiparticle and back... by tzs on Saturday June 12, 2021 @07:46PM (#27488425)
No. But it needs to be explained what other form it takes.
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Re:Subatomic particle seen changing to antiparticle and back... by wizzwizz4 on Sunday June 13, 2021 @06:33AM (#27491421)
Mass?
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Re:Subatomic particle seen changing to antiparticle and back... by pletnes on Sunday June 13, 2021 @03:08AM (#27490465)
How does that work out in the at-rest frame of reference, when the particle is not moving?
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Re:Subatomic particle seen changing to antiparticle and back... by ezconnect on Sunday June 13, 2021 @05:33AM (#27491157)
In our current physics everything is always vibrating or moving.
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