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

[Jodi Patient]

            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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