BLEU - Revision history

en>Archon 2488: use en dash

2015-01-05T22:25:55Z

use en dash

← Older revision		Revision as of 00:25, 6 January 2015
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en>Drmelhaj: Fix link to reference Madnani, N. (2011)

2014-02-28T16:01:11Z

Fix link to reference Madnani, N. (2011)

← Older revision		Revision as of 18:01, 28 February 2014
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	~~[[Image:Muon-Electron-Decay.svg\|right\|frame\|[[Feynman diagram]] of the muon decay]]~~		The title of the writer is Figures. One of the extremely very best issues in the world for me is to do aerobics and now I'm attempting to make cash with it. For a whilst she's been in South Dakota. Bookkeeping is her day job now.<br><br>my site over the counter std test ([http://www.videokeren.com/user/BFlockhar her comment is here])
	The '''Michel parameters''', usually denoted by <math>\rho, \eta, \xi</math> and <math>\delta</math>, are four parameters used in describing the phase space distribution of leptonic decays of charged [[lepton]]s, <math>l_{i}^-\rightarrow l_{j}^{-}\nu_{i}\bar{\nu_{j}}</math>. They are named after the physicist [[Louis Michel (physicist)\|Louis Michel]]. Sometimes instead of ~~<math>\delta</math>,~~ the ~~product <math>\xi\delta</math>~~ is ~~quoted. Within the [[Standard Model]] of [[electroweak interaction]]s, these parameters are expected to be~~
	~~:<math> \rho={3\over4}, \quad \eta=0, \quad \xi=1, \quad \xi\delta={3\over4}~~.~~</math>~~
	~~Precise measurements of energy and angular distributions~~ of the ~~daughter leptons in decays of polarized [[muon]]s and [[tau lepton]]s are so far~~ in ~~good agreement with these predictions of~~ the ~~Standard Model.~~

	~~==Muon decay==~~
	~~{{Seealso\|Muon#Muon decay}}~~
	~~Let us consider the decay of the positive muon:~~
	~~:<math>\mu^+\~~to ~~e^+ + \nu_e + \bar\nu_\mu.</math>~~
	In the muon [[rest frame]], energy and angular distributions of the [[positron]]s emitted in the decay of a polarised muon expressed in terms of Michel parameters are the following, neglecting electron and ~~[[neutrino]] masses and the radiative corrections:~~
	~~:<math>\frac{d^2\Gamma}{x^2dxd\cos\theta} \sim (3-3x) + \frac{2}{3}\rho (4x-3) + P_{\mu}\xi\cos\theta~~
	~~[(1-x)+\frac{2}{3}\delta(4x-3)],</math>~~
	~~where <math>P_{\mu}</math> is muon polarisation, <math>x=E_e/E_e^{max}</math>, and <math>\theta</math> is the angle between muon [[Spin (physics)\|spin]] direction and positron momentum direction.<ref>~~
	~~{{cite journal~~
	~~\|author=R. Bayes~~ '~~'et al~~.'~~' ([[TWIST experiment\|TWIST collaboration]])~~
	~~\|year=2011~~
	~~\|title=Experimental Constraints on Left-Right Symmetric Models from Muon Decay~~
	~~\|journal=[[Physical Review Letters]]~~
	~~\|volume=106\|issue= 4\|pages=041804~~
	~~\|doi=10.1103/PhysRevLett.106.041804\|bibcode = 2011PhRvL~~.~~106d1804B~~
	~~\|unused_data=Open Access }}</ref> For the decay of the negative muon, the sign of the term containing <math>cos\theta</math> should be inverted.~~

	~~For the decay of the positive muon, the expected decay distribution for the [[Standard Model]] values of Michel parameters~~ is
	~~:<math>\frac{d^2\Gamma}{dxd\cos\theta} \sim x^2[(3-2x) - P_{\mu}\cos\theta(1-2x)]~~.<~~/math~~>
	~~Integration of this expression over electron energy gives the angular distribution of the daughter positrons:~~
	~~:<math>\frac{d\Gamma}{d\cos\theta} \sim 1 + \frac{1}{3}P_{\mu}\cos\theta.~~<~~/math~~>
	~~The positron energy distribution integrated~~ over the ~~polar angle is~~
	~~:<math>\frac{d\Gamma}{dx} \sim~~ (~~3x^2-2x^3).</math>~~

	~~==References==~~
	~~{{reflist}}~~
	* [http://www.~~slac.stanford~~.~~edu~~/~~pubs~~/~~confproc/ssi97/ssi97-002.html Lecture on Lepton Universality] by Michel Davier at the 1997 SLAC Summer Institute.~~
	* [http://pos.sissa.it/archive/conferences/005/036/silafae-III_036.pdf Electroweak Couplings, Lepton Universality, and the Origin of Mass: An Experimental Perspective], article by John Swain, from the Proceedings of the Third Latin American Symposium on High Energy Physics.

	~~[[Category:Electroweak theory]]~~
	~~[[Category:Particle physics]~~]

en>Eleonore668: /* Performance */

2013-11-13T14:26:09Z

Performance

← Older revision		Revision as of 16:26, 13 November 2013
Line 1:		Line 1:
	The ~~title~~ of the ~~author~~ is ~~Numbers but it'~~s ~~not~~ the ~~most masucline name out there. My family life~~ in ~~Minnesota~~ and ~~my family members loves it~~. ~~For years he'~~s ~~been operating as~~ a ~~receptionist. One~~ of the ~~issues she enjoys most~~ is ~~to do aerobics~~ and ~~now she~~ is ~~trying to make money with it~~.<br><br>~~Look into my web page;~~ [http://~~Srgame~~.Co.kr/~~qna~~/~~21862 Srgame~~.Co.kr]		[[Image:Muon-Electron-Decay.svg\|right\|frame\|[[Feynman diagram]] of the muon decay]]
			The '''Michel parameters''', usually denoted by <math>\rho, \eta, \xi</math> and <math>\delta</math>, are four parameters used in describing the phase space distribution of leptonic decays of charged [[lepton]]s, <math>l_{i}^-\rightarrow l_{j}^{-}\nu_{i}\bar{\nu_{j}}</math>. They are named after the physicist [[Louis Michel (physicist)\|Louis Michel]]. Sometimes instead of <math>\delta</math>, the product <math>\xi\delta</math> is quoted. Within the [[Standard Model]] of [[electroweak interaction]]s, these parameters are expected to be
			:<math> \rho={3\over4}, \quad \eta=0, \quad \xi=1, \quad \xi\delta={3\over4}.</math>
			Precise measurements of energy and angular distributions of the daughter leptons in decays of polarized [[muon]]s and [[tau lepton]]s are so far in good agreement with these predictions of the Standard Model.

			==Muon decay==
			{{Seealso\|Muon#Muon decay}}
			Let us consider the decay of the positive muon:
			:<math>\mu^+\to e^+ + \nu_e + \bar\nu_\mu.</math>
			In the muon [[rest frame]], energy and angular distributions of the [[positron]]s emitted in the decay of a polarised muon expressed in terms of Michel parameters are the following, neglecting electron and [[neutrino]] masses and the radiative corrections:
			:<math>\frac{d^2\Gamma}{x^2dxd\cos\theta} \sim (3-3x) + \frac{2}{3}\rho (4x-3) + P_{\mu}\xi\cos\theta
			[(1-x)+\frac{2}{3}\delta(4x-3)],</math>
			where <math>P_{\mu}</math> is muon polarisation, <math>x=E_e/E_e^{max}</math>, and <math>\theta</math> is the angle between muon [[Spin (physics)\|spin]] direction and positron momentum direction.<ref>
			{{cite journal
			\|author=R. Bayes ''et al.'' ([[TWIST experiment\|TWIST collaboration]])
			\|year=2011
			\|title=Experimental Constraints on Left-Right Symmetric Models from Muon Decay
			\|journal=[[Physical Review Letters]]
			\|volume=106\|issue= 4\|pages=041804
			\|doi=10.1103/PhysRevLett.106.041804\|bibcode = 2011PhRvL.106d1804B
			\|unused_data=Open Access }}</ref> For the decay of the negative muon, the sign of the term containing <math>cos\theta</math> should be inverted.

			For the decay of the positive muon, the expected decay distribution for the [[Standard Model]] values of Michel parameters is
			:<math>\frac{d^2\Gamma}{dxd\cos\theta} \sim x^2[(3-2x) - P_{\mu}\cos\theta(1-2x)].</math>
			Integration of this expression over electron energy gives the angular distribution of the daughter positrons:
			:<math>\frac{d\Gamma}{d\cos\theta} \sim 1 + \frac{1}{3}P_{\mu}\cos\theta.</math>
			The positron energy distribution integrated over the polar angle is
			:<math>\frac{d\Gamma}{dx} \sim (3x^2-2x^3).</math>

			==References==
			{{reflist}}
			* [http://www.slac.stanford.edu/pubs/confproc/ssi97/ssi97-002.html Lecture on Lepton Universality] by Michel Davier at the 1997 SLAC Summer Institute.
			* [http://pos.sissa.it/archive/conferences/005/036/silafae-III_036.pdf Electroweak Couplings, Lepton Universality, and the Origin of Mass: An Experimental Perspective], article by John Swain, from the Proceedings of the Third Latin American Symposium on High Energy Physics.

			[[Category:Electroweak theory]]
			[[Category:Particle physics]]

en>Francis Tyers: not about bleu

2012-08-11T14:16:10Z

not about bleu

New page

The title of the author is Numbers but it's not the most masucline name out there. My family life in Minnesota and my family members loves it. For years he's been operating as a receptionist. One of the issues she enjoys most is to do aerobics and now she is trying to make money with it.<br><br>Look into my web page; [http://Srgame.Co.kr/qna/21862 Srgame.Co.kr]