OnScreen Particle Physics Lab (Stanford)

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2. The first time, a multi-colored path formed. The different colors mean that the original particle has decayed into a new particle, each of which is signified by an individual color. The resulting images included a single curve of one color curving toward the magnetic force, a single curve that switched colors at varying points but continued along the same basic track, a curve that switched colors and then rapidly switched direction of motion, and a curve that changed color and then went into a spiral. Each of the resulting images showed a negatively charged particle initially.

4. Original Rest Mass
Charge=-1
R=(a2+b2)/(2b)
a=127.3cm
b=386.55cm
R=650.535cm

B=.5kGauss
P=.3BR=97.5802MeV

Mo=(P2-K2)/(2K)
K=30 MeV
Mo=143.698MeV/c2

5. Charge=-1
R=(a2+b2)/(2b)
a=159.9cm
b=280.1cm
R=325.278cm

B=1 kGauss
P=.3BR=97.5834MeV

Mo=(P2-K2)/(2K)
/> K=30 MeV
Mo=143.709MeV/c2

The rest masses are similar to that of a negatively charged pion (139.6MeV/C^2).

6. The images seen with Particle Decay 2 are very similar in geometric shape to the images seen with Particle Decay 1; the only difference is that the initial particle is curving the opposite direction, so therefore must have a charge of +1.

7. One can tell that the short-lived particle was neutral because it does not appear on the OSPP, but particle tracks begin in the middle of the field, so must have emerged from something.

Yellow Particle= positive charge
Red Particle= Negative charge
Length=distance between the crests of the waves
pz = 0.3 B L / 2
Pxy=.3BR
B=.475KGauss
K=100MeV


Radiusred= 155 cm
Lengthred=342.5cm
PZred=7.768MeV/c
PXYred=22.088MeV/c
Ptotalred=23.414MeV/C
Rest Mass= -47.259MeV/c2


Radiusyellow=261.963cm
Lengthyellow=255cm
PZyellow=5.783MeV/c
PXYyellow=37.193MeV/c
Ptotalyellow=37.639MeV/c
Rest Mass= -42.916MeV/c2

It was determined, after multiple trials and multiple calculations, that there is some inherent flaw, since the total momentum invariable was calculated to be less than the total Kinetic energy, which would provide a negative rest mass, which is impossible. Thus, to account for this error, we determined that there must be something ocurring that we cannot observe (involving neutral particles) that would account for our missing momentum.

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