[Cuga] **Reminder** Pizza Seminar Series - Wednesday, Feb 15, 2012 - A message from Hari Areti

[Jodi Patient]

                 See you at noon today.
                 Jefferson Lab's Graduate Student and Post-Doc 
Association Wiki:  https://gspda.jlab.org/wiki/index.php/Main_Page
>            Please RSVP to: patient at jlab.org by COB on February 13, 2012.
>>
>>> Wednesday, February 15, 2012
>>> ****CC F113****
>>> 12:00-1:00pm
>>>
>>> *TMDs for the Simple-minded***
>>>
>>>
>>> *Sebastian Kuhn***
>>> Old Dominion University
>>>
>>>
>>> *Abstract**:*
>>> Recently, the topic of transverse-momentum dependent (TMD) parton 
>>> distribution functions (PDFs) has created a lot of interest and 
>>> excitement - with a large program planned for the 12 GeV era at 
>>> Jefferson Lab. However, for those of us who "grew up" with the 
>>> comfortable, simple world of just two nucleon structure functions 
>>> (F1 and g1, augmented by higher twist corrections like R and A2), 
>>> the plethora of new quantities to be measured may be bewildering. 
>>> Why are there exactly EIGHT of these TMDs at leading twist? (Turns 
>>> out there are really 11 up to 2nd order in p_T). What can one 
>>> possibly learn from them? And how are they accessible 
>>> experimentally? Where do all these complicated sin(phi) (and 
>>> cos(3phi) and...) terms come from?
>>>
>>>
>>> While the theory behind structure functions in general and TMDs in 
>>> particular is quite involved (and rapidly evolving), even a 
>>> simple-minded experimentalist can discern some order in this chaos 
>>> and, perhaps, develop a "naive intuition" for what this is all 
>>> about. The speaker professes to belong in this category and will try 
>>> to pass on some of his primitive understanding. While a little 
>>> knowledge is always dangerous, once you feel a little more 
>>> comfortable with this emerging field, it may be less daunting to get 
>>> a deeper understanding. Needless to say, this talk is NOT for 
>>> experts (although I'm afraid they'll come anyway and make me look 
>>> foolish...)
>>>
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