View Full Version : Electroweak penguin decays
arcticpenguin
5th March 2003, 01:32 PM
http://www.eps.org/aps/meet/CENT99/BAPS/abs/S6750009.html
Search for electroweak penguin decays
I don't know a thing about it, but i like the title.
garys_2k
5th March 2003, 03:10 PM
Gee, I wouldn't know where to start with that!!!
Solitaire
5th March 2003, 06:53 PM
Originally posted by garys_2k
Gee, I wouldn't know where to start with that!!!
Here you go:
Mod. Phys. Lett. A1 619 (1986) - Desperately seeking penguin
Nucl. Phys. B. 345 1 (1991) - Penguin box
Phys. Rev. D 44 1454 (1991) - Penguin trapping
Phys. Rev. Let. 71 674 (1993) - Evidence for penguins
Nuovo Cim. 108A 1069 (1995) - Isolating the penguin
Phys. Rev. Lett. 74 2885 (1995) - Penguin decay
Z. Phys. C 66 129 (1995) - Pure penguin (!!!)
Phys. Lett. B. 397 269 (1997) - Penguin zoology
Phys. Lett. B 399 172 (1997) - Non-standard penguin
Phys. Rev. D. 56 1685 (1997) - Dipenguin
Nucl. Phys. B 533 3 (1998) - Penguin hunting
Nucl. Phys. B 512 3 (1998) - Charming penguin
Eur. Phys. J. C 5 705 (1998) - Space-like penguins
Phys. Rev. D 57 2752 (1998) - Penguin contributions
Eur. Phys. J. C 6 451 (1999) - Electroweak penguins
Phys. Rev. D 59 054007 (1999) - Taming the penguin
Phys. Lett. B 451 161 (1999) - The (dreaded) Z-Penguin
Walter Wayne
5th March 2003, 08:44 PM
Originally posted by John Lockard
Mod. Phys. Lett. A1 619 (1986) - Desperately seeking penguin
I know its been 17 years, but perhaps you should respond AP.
Walt
rwald
5th March 2003, 09:07 PM
Just out of curiosity, what does "penguin" really mean in these contexts?
garys_2k
6th March 2003, 07:11 AM
Originally posted by rwald
Just out of curiosity, what does "penguin" really mean in these contexts?
From HERE (http://newton.ex.ac.uk/aip/physnews.140.html):
PENGUIN EVENTS ARE SEEN AT CORNELL. The B meson, made in high-energy electron-positron collisions, is a composite object, made of a b (bottom) quark and one of several types (flavors) of antiquarks. The B quickly decays, usually by a process in which the b quark itself decays typically into a c (charm) quark and a W boson. This decay is both flavor-changing---the b becomes a c---and charge-changing since the charge of the b and c are -1/3 and +2/3, respectively. The CLEO Collaboration, working at Cornell's CESR electron-positron collider, has now observed the first flavor-changing, non-charge-changing decays of the b quark, in this case into an s (strange) quark and a photon. (Actually, in the lab bare b or c quarks are never observed, but rather the mesons (such as the B or K*) which contain the quarks.) The Feynman diagram for this rare process vaguely resembles a penguin, whence the name penguin event. These events, some theorists believe, have a bearing on the issue of CP (charge conjugation and parity) violation. (R. Ammar et al., Physical Review Letters, 2 Aug.)
Andonyx
6th March 2003, 07:36 AM
Have you sent this article to your doctor yet?
Monitoring the health of your penguin. (http://ask.slashdot.org/article.pl?sid=03/03/05/0741228)
arcticpenguin
6th March 2003, 07:39 AM
Originally posted by Andonyx
Have you sent this article to your doctor yet?
Monitoring the health of your penguin. (http://ask.slashdot.org/article.pl?sid=03/03/05/0741228)
That article is about Oracle. Perhaps you should have posted it to the Paranormal forum. ;)
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