Problem sets      Physics 245B     winter  2007
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Note: the most recent is listed first.
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Problem set 3,  due Tuesday, Feb. 20
Hand it in to me at the beginning of class.

Morii et al: 4.6 and 4.7
Calculate the rate (in GeV) for top -> Wb.
   Do this at tree level.
   You may neglect the b mass.
   Carry it through to an actual number. 

Do the question from lecture: Within the seesaw
framework, make reasonable assumptions about m_D 
and m_D^2/m_R to get an estimate for m_R. This is
a one line calculation. The thought is in the 
"reasonable assumptions" part.

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Problem set 2,  due Tuesday, Feb. 6.
Hand it in to me at the beginning of class.

Morii et al: 4.2 and 4.4
Peskin and Schroeder: 20.1

Also: For the case of SU(2)xU(1) EW theory as discussed
in Ch. 4 of Morri et al., does the choice of
direction for a non-zero VEV for the Higgs matter? 
More precisely, do different choices lead to 
physically equivalent theories? Carefully 
justify your answer.

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Problem set 1,  due Tuesday, Jan. 23
Hand it in to me at the beginning of class.

The problems are at
http://student.physics.ucdavis.edu/kiskis/phy245b_07/p_set_1.pdf

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