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Topic: Sleptons

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	Search for supersymmetric particles in light gravitino scenarios and sleptons NLSP
		A search for sleptons, neutralinos, charginos, sgoldstinos and heavy stable charged sleptons in the context of scenarios where the lightest su per sym me tric particle is the gravitino, is presented.
		Data collected during 2000 with the DELPHI detector at centre-of-mass energies from 204 to 208 GeV were analysed and combined with all the data collected from 1995 to 1999 at lower energies.
		No evidence for the production of sleptons, neutralinos and charginos has been found, therefore new limits on the mass of these supersymmetric particles and on the model parameter space are set.
	publish.edpsciences.org /abstract/EPJC/V27/P153 (182 words)

	ALEPH Supersymmetry Studies at Sheffield
		Another possible decay of the slepton, in the gauge-mediated supersymmetry breaking framework, is into a normal lepton and an invisible gravitino.
		We are searching for short-lived sleptons, which are observed due to the fact that their decay products do not appear to originate at the primary vertex, and for sleptons with an intermediate lifetime, where the tracks show a distinct kink within the detector.
		If interpreted as a genuine slepton decay, this could be a selectron decaying into an electron and an unseen gravitino, generating the visible kink.
	www.shef.ac.uk /physics/people/cbooth/aleph/susy.html (1114 words)

	UIC HEP Seminars
		The oblique corrections, the Zqq and Zll vertex corrections, and the vertex and box corrections to the muon decay width are separately studied in detail.
		We first study individual contribution from the four sectors of the model, the squarks, the sleptons, the supersymmetric fermions (charginos and neutralinos), and the supersymmetric Higgs bosons, to the universal oblique parameters, where the sum of individual contributions gives the total correction.
		We then study the vertex/box corrections carefully when both the supersymmetric fermions (-inos) and the supersymmetric scalars (squarks and sleptons) are light, and find that no significant improvement over the SM fit is achieved.
	www.uic.edu /depts/phys/talks/00/0131.hagiwara.shtml (274 words)

	mssm
		The names for the spin-0 partners of the quarks and leptons are constructed by adding the prefix "s", which is short for scalar.
		The symbols for the squarks and sleptons are the same as for the corresponding fermion, but with a tilde used to denote the superpartner of a Standard Model particle.
		In this case the usual assumption is that the gravity is flavor blind and at the Planck scale the gaugino masses are all equal to one common scale, M
	socrates.berkeley.edu /~noise/mssm.html (945 words)

	Cosmic anarchists (Site not responding. Last check: 2007-10-17)
		What Kusenko and Shaposhnikov showed three years ago is that a sea of squarks and sleptons would inevitably contain tiny variations in density, and that the slightly denser parts could clump together (Physics Letters B, vol 418, p 46).
		These bags of myriad squarks and sleptons can exist because the particles are less picky than normal quarks about sharing their space.
		In a proton, for instance, there can be no more than three normal quarks, because they refuse to share their quantum state with another quark, and there are only three possibilities to choose from.
	i.1asphost.com /ec3khrl/cosmicanarchists.htm (2373 words)

	ALEPH Searches for Sleptons and Stops at LEP2 (Site not responding. Last check: 2007-10-17)
		ALEPH has searched for sleptons and stops in \mathrm e^+e^- collisions at center-of-mass energies of 161 and 172 GeV.
		The standard search for sleptons is augmented by a search for heavily-ionizing charged particles, which would be the expected signal if the sleptons were long-lived and decayed outside the detector.
		No signal was found by either the slepton or stop searches, allowing greatly improved bounds on slepton and stop masses to be set.
	flux.aps.org /meetings/YR97/BAPSAPR97/abs/S740012.html (119 words)

	Supersymmetry
		With my collaborator I found a new mechanism for dynamical SUSY breaking that can produce realistic masses for the superpartners (squarks, sleptons, and gauginos) of the observed standard model particles.
		We also developed a class of models in which new strongly coupled gauge interactions both dynamically break SUSY and form composite quarks, squarks, leptons, and sleptons.
		Previously realistic models have relied on "messenger" (gravitational or gauge) interactions to communicate the SUSY breaking from a strongly coupled sector to the weakly coupled superpartners.
	particle.physics.ucdavis.edu /Physics/super.html (530 words)

	HeiDok - A Search for Sleptons with Intermediate Lifetimes in e+e- Collisions at sqrt(s)=189-209 GeV
		Searches were performed for sleptons with intermediate lifetimes (approx.
		The topology of tracks with large impact parameters and missing energy, caused by the decay of the slepton to a lepton and a gravitino, was exploited.
		Since no evidence for sleptons with intermediate lifetimes was found, the results were combined with searches for promptly decaying, long-lived and stable sleptons, and for all channels upper limits on the production cross-sections were obtained.
	www.ub.uni-heidelberg.de /archiv/2484 (538 words)

	Anadi
		In the mSUGRA scenario the superparticles are produced in pairs and the lighter charginos and neutralinos, mixed state of electroweak gauginos and higgsinos, and the sleptons, are less massive than gluinos and squarks.
		The associated production of chargino and neutralino is expected to occur via two modes which interfere destructively: a dominant s-mode, through virtual W exchange and a suppressed t-mode, through virtual squark exchange.
		The charginos and neutralinos can decay into charged leptons via virtual sleptons or virtual W/Z. The mSUGRA benchmark point selected for performing the analysis corresponds to a chargino mass at the boundary of the LEPII exclusion limit.
	www-cdf.fnal.gov /physics/exotic/r2a/20060309.trilep_hipt_mll (940 words)

	The Search for Charged Sleptons and Flavour Lepton Number Violation at LHC (CMS) (ResearchIndex) (Site not responding. Last check: 2007-10-17)
		Abstract: We study a possibility to detect charged sleptons and flavour lepton number violation at LHC (CMS).
		We have found that for luminosity L = 10 5 pb \Gamma1 it would be possible to detect righthanded sleptons with a mass up to 325 GeV and left-handed ones with a mass up to 350 GeV.
		We also investigate a possibility to look for flavour lepton number violation in slepton decays due to the mixing of different...
	citeseer.ist.psu.edu /71818.html (307 words)

	WG1 subgroup for flavour violation in the (s)lepton sector (Site not responding. Last check: 2007-10-17)
		WG1 subgroup for flavour violation in the (s)lepton sector
		'flavour' identification of sleptons and sneutrinos at LHC
		Felcini: sleptons flavour violation and CP violation at LHC (CMS)
	ftae11.ugr.es /files/Slepton.html (228 words)

	eprintweb - hep-ph/0508247 Reconstructing sleptons in cascade-decays at the linear collider
		eprintweb - hep-ph/0508247 Reconstructing sleptons in cascade-decays at the linear collider
		Reconstructing sleptons in cascade-decays at the linear collider
		A method to reconstruct sleptons in cascade-decays at the FLC is presented.
	eprintweb.org /S/article/hep-ph/0508247 (87 words)

	Physics News Update
		Detecting the elusive dark matter that seems to pervade the universe is difficult enough, but it's an even bigger challenge to distinguish between the different kinds of the invisible matter.
		Candidates for dark matter include pointlike particles such as neutralinos (predicted by supersymmetry theory) and extended objects such as "Q-balls," large bags of particles such as squarks and sleptons which are also predicted in supersymmetry.
		Numerous planned and ongoing experiments aim to detect directly dark matter, which is believed to possess energies in the minuscule range of 0.001-0.01 MeV.
	www.aip.org /enews/physnews/2002/split/602-2.html (342 words)

	[No title]
		Additional processes for the SUSY two Higgs doublet model are currently under test and will be released shortly.
		In addition to the decay modes included in the ISAJET package ISAWIG allows for the possibility of violating R-parity and includes the calculation of all 2-body squark and slepton, and 3-body gaugino and gluino R-parity violating decay modes.
		These are: the ratio of Higgs VEVs, tan(beta), and the scalar Higgs mixing angle, alpha; the mixing parameters for the Higgses, gauginos and the sleptons; the trilinear couplings; and the Higgsino mass parameter mu.
	hepwww.rl.ac.uk /theory/seymour/herwig/herwig61.txt (2799 words)

	Circle Line SUSY at LC Questions
		As long as one can reach the sleptons, there is plenty of precision information available to the LC on flavor-dependence of scalar masses.
		Presumably, the best strategy is to study the lighter chargino and use its properties to predict the location of the heavier one.
		In mSUGRA, the sleptons and squarks could consistently be almost degenerate at 2 TeV.
	theory.fnal.gov /CircleLine/Michaelqueries.html (2609 words)

	bench
		This case is close to ones studied by LHC.
		It puts some sleptons and gauginos in reach of a 500 GeV linear collider.
		A multi-TeV collider is needed to reach the squarks, sleptons and heavier Higgs bosons.
	phyweb.lbl.gov /~ianh/nlc/bench (670 words)

	TIME.com: Super Push for a Supercollider -- Apr. 13, 1987 -- Page 1
		When one stream of high-speed protons smashes into another stream moving in the opposite direction, the force of the collision will create a host of short-lived particles not seen since the first moments after the Big Bang gave birth to the universe.
		Physicists are hoping that the appearance of exotic new particles -- higgs bosons, squarks and sleptons -- will open new vistas of inner space for scientists to study.
		At a cost of $4.4 billion, the tunnel would be the priciest scientific instrument ever built.
	www.time.com /time/magazine/article/0,9171,964021,00.html (769 words)

	Search for Sleptons in E (ResearchIndex) (Site not responding. Last check: 2007-10-17)
		Abstract: The data collected by the ALEPH experiment at LEP at centre--of--mass energies around 183 GeV are analysed to search for sleptons, the partners of leptons in supersymmetric theories.
		The previously published search for acoplanar leptons and missing energy has been updated.
		New searches have been developed to cover a wider range of slepton signals.
	citeseer.ist.psu.edu /293626.html (381 words)

	LEP2 SUSY WORKING GROUP Sleptons
		All four LEP experiments have searched for sleptons in the data taken at 189 GeV.
		The unification of gaugino masses is assumed, leading to the relation M1 = (5/3)tan^2(theta_W) M2, which is important in fixing the masses and field content of the neutralinos.
		(The neutralinos appear in the decay of the sleptons, and play a major role in the cross section for selectrons via a t-channel diagram.)
	lepsusy.web.cern.ch /lepsusy/www/sleptons_tampere99/sleptons_pub.html (540 words)

	Scientific Commons: A. Maio
		Abreu, P. Adam, W. Adye, T. Adzic, P. Aldeweireld, T. Alekseev, G D. A search for stable and long-lived heavy charged particles used the data taken by the DELPHI experiment at energies from 130 to 183 GeV.
		Abreu, P. Adam, W. Adye, T. Adzic, P. Albrecht, Z. Alderweireld, T. An update of the search for sleptons, neutralinos and charginos in the context of scenarios where the lightest supersymmetric particle is the gravitino and the next-to-lightest supersymmetric...
		Abreu, P. Adam, W. Adye, T. Adzic, P. Ajinenko, I. Albrecht, Z. Searches for charginos, neutralinos and sleptons at LEP2 centre-of-mass energies from 130 GeV to 189 GeV have been used to set lower limits on the mass of the Lightest Supersymmetric Particle and...
	en.scientificcommons.org /a_maio (3583 words)

	Supersymmetry/Higgs First General Meeting (Site not responding. Last check: 2007-10-17)
		The net result is a greatly enhanced discovery reach for the direct production and detection of new heavy particles.
		The Run II collider experiments will probe several dozen distinct channels sensitive to the production and decay of squarks, gluinos, charginos, neutralinos, and sleptons, as well as scalar, pseudoscalar, and charged Higgs.
		The discovery reach extends not only to standard MSSM sparticle decays, but also to nonstandard decay modes involving photons, b's, and tau's.
	fnth37.fnal.gov /may_meeting.html (412 words)

	Happy 2007 \| Cosmic Variance
		I won’t believe any results from the LHC until they have been confirmed by an independent accelerator.
		Who’s to say they won’t get paid off by the supersymmetry mafia to put out simulated data with squarks and sleptons?
		Kind of like they did with the fake moon landings?
	cosmicvariance.com /2007/01/01/happy-2007 (2087 words)

	eprintweb - hep-ph/0408226 Detection of sleptons at a linear collider in models with small slepton-neutralino mass ...
		Detection of sleptons at a linear collider in models with small slepton-neutralino mass differences
		A feasibility study is presented to precisely measure the masses of charged sleptons and the lightest neutralino in $e^+e^-tosmursmur$ and $e^+e^-tostau_1stau_1$ production.
		Different mSUGRA scenarios with small slepton-neutralino mass differences of a few GeV are invesigated.
	eprintweb.org /S/article/hep-ph/0408226 (142 words)

	BrPlots
		Branching ratios of sleptons and lighter gauginos from Isajet 7.64
		Number of events (ISAJET level) for slepL -> l chi20 -> l l slepR -> l l l chi10 and for slepL -> l chi20 -> l ll chi10.
		Last modified: Mon Mar 24 16:16:17 MET 2003
	www.nbi.dk /~lytken/brplots/brplots.html (122 words)

	Official SMadGraph page
		NO SUSY breaking scheme is assumed, because the spectrum is taken directly from the SLHA input file!
		Squark and sleptons mix only in the third generation.
		Four-scalar couplings are not included, because we cannot conceive of any future collider which would be able to produce four SUSY scalars with any discernible rate, or three Higgs bosons for that matter.
	www.pas.rochester.edu /~rain/smadgraph/smadgraph.html (627 words)

	Yuri Gershtein at Work
		DØ Note 3431, L1 Trigger for Slow Moving Particles, April 98
		DØ II Triggers on Sleptons in GMSB Models A talk I gave at Run II SUSY/Higgs Workshop in May 98
		DØ Note 3432, Simulation of Level 1 Trigger rates for B0 -> h+ h-, April 98
	d0server1.fnal.gov /users/gerstein/tryhtml/mywork.htm (321 words)

	Search for Sleptons Paper Accepted by PRL (Site not responding. Last check: 2007-10-17)
		Folder: PHYSICS From: klima@d0nt148.fnal.gov Subject: Search for Sleptons Paper Accepted by PRL Date: 29-OCT-2002 09:39 Expires: 28-DEC-2002 09:39
		Dear colleagues, We are happy to inform you that our paper "Search for the Production of Single Sleptons through R-parity Violation in p-pbar Collisions at sqrt(s)=1.8 TeV" has been accepted for publication in Physical Review Letters.
		Congratulations to Abdel Abdesselam, Pierre Petroff, and Christophe Royon (primary authors), to EB #137, chaired by Elemer Nagy, and to all others who contributed to this paper.
	www-d0.fnal.gov /cgi-bin/d0news?read__PHYSICS__90 (81 words)

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