The Personal Blog of Stephen Sekula

Sunday Bloody Sunday

Science is, like all human endeavors, full of competition. As in all competition, friendly or otherwise, there has to be somebody who gets disappointed. Today, I am pleased to announce that I am a little disappointed.

My competitors in the “Belle Collaboration”:http://belle.kek.jp have announced at a major conference they have observed the rare B decay B+ → τ+ ν [FPCPBelleBTauNu].
I’ve spent the better part of the last 5 years of my life searching for this process. I’ve been part of pioneering efforts to create virtual “single B beams” where you reconstruct one of the two B mesons produced in our collider, which then turns each collision into essentially a single-B event. We can can look at that remaining B for evidence of the rare decay. Belle used the best aspects of this technique on a dataset that is twice as big as what we had available a year ago, when we last did this analysis, and has strong evidence for its existence.

This is ground-breaking. This would be the first time a purely leptonic decay of the B meson was observed. This is important, because leptons allow us to cleanly probe the structure of the B meson itself. Using this rare decay, we can probe the inner workings of the B and thus the Standard Model itself.

I am disappointed, but elated. Science is often full of personal contradictions. I have to put the data above my personal feelings. Besides, I am still going full tilt with my colleagues to produce a BaBar result on this decay for summer. There’s yet dry powder left in this keg!


.. [FPCPBelleBTauNu] “http://fpcp2006.triumf.ca/displayTalk.php?path=dGFsa3MvZGF5MS8wOTM1L0ZQQ1BfMjAwNmFwcjA5X2lrYWRvLnBkZg==&time=09:35:00&date=2006-04-09”:http://fpcp2006.triumf.ca/displayTalk.php?path=dGFsa3MvZGF5MS8wOTM1L0ZQQ1BfMjAwNmFwcjA5X2lrYWRvLnBkZg==&time=09:35:00&date=2006-04-09