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Topic: Soft SUSY breaking

Related Topics

Supersymmetry breaking

Supersymmetry breaking scale

Supersymmetric

Minimal Supersymmetric Standard Model

Supersymmetry

Spontaneous symmetry breaking

Superpartner

Hierarchy problem

Superpotential

Ultraviolet divergence

Standard Model

Relevant operator

Quantum harmonic oscillator

Planck units

Bose

	Soft SUSY breaking - Wikipedia, the free encyclopedia
		In theoretical physics, soft SUSY breaking is type of supersymmetry breaking that does not cause ultraviolet divergences to appear in scalar masses.
		Soft SUSY breaking was proposed in 1981 by Howard Georgi and Savas Dimopoulos.
		Soft SUSY breaking decouples the origin of supersymmetry breaking from its phenomenological consequences.
	en.wikipedia.org /wiki/Soft_SUSY_breaking (184 words)

	Soft SUSY Breaking Terms
		Treat the supersymmetry breaking mechanism as a fl box, but based on the experience with gaugino condensation, use that the end result of this mechanism is to induce nonvanishing values to the auxiliary fields of the moduli or dilaton fields.
		The general procedure for extracting the soft breaking terms is clear.
		For arbitrary mixing angle, the soft breaking terms are not necessarily universal (unless special values of the modular weights are taken).
	fisica.usac.edu.gt /public/curccaf_proc/quevedo1/node13.html (565 words)

	Minimal Supersymmetric Standard Model - Wikipedia, the free encyclopedia (Site not responding. Last check: 2007-10-08)
		It adds supersymmetry breaking by introducing explicit soft supersymmetry breaking operators into the Lagrangian that is communciated to it by some unknown (and unspecified) dynamics.
		To avoid these problems, the MSSM takes all of the soft susy breaking to be diagonal in flavor space and for all of the new CP violating phases to vanish.
		In this ansatz, all of the squark and slepton soft masses are assumed to be the same at the GUT scale and to not violate flavor.
	en.wikipedia.org /wiki/MSSM (2403 words)

	Supersymmetry - ExampleProblems.com
		Either we assume the vacuum is degenerate and SUSY is broken spontaneously, or we add soft SUSY breaking terms which break SUSY explicitly, making it an approximate symmetry.
		SUSY quantum mechanics involves pairs of Hamiltonians which share a particular mathematical relationship, which are called partner Hamiltonians.
		In addition, SUSY has been applied to non-quantum statistical mechanics through the Fokker-Planck equation, showing that even if the original inspiration in high-energy particle physics turns out to be a blind alley, its investigation has brought about many useful benefits.
	www.exampleproblems.com /wiki/index.php/Supersymmetry (2426 words)

	Supersymmetry breaking - Wikipedia, the free encyclopedia
		In particle physics, supersymmetry breaking is the process to obtain a seemingly non-supersymmetric physics from a supersymmetric theory which is a necessary step to reconcile supersymmetry with actual experiments.
		It is an example of spontaneous symmetry breaking.
		The superpartners whose mass would otherwise be equal to the mass of the regular particles in the absence of the SUSY breaking become much heavier.
	en.wikipedia.org /wiki/Supersymmetry_breaking (125 words)

	Supersymmetry (Site not responding. Last check: 2007-10-08)
		After summarising the phenomenological constraints on SUSY breaking terms, spontaneous SUSY breaking (F-term and D-term breaking) is studied.
		Different models for SUSY breaking are discussed, in particular gravity and gauge mediated SUSY breaking.
		Symmetries, the N=1 supersymmetry algebra, extended supersymmetry, superspace and superfields, supersymmetric gauge theories, breaking of supersymmetry, the minimal supersymmetric extension of the Standard Model (MSSM), elementary supergravity, gravity and gauge mediated breaking of supersymmetry, phenomenology of the MSSM and some of its extensions.
	www.cpt.dur.ac.uk /%7Egeorg/ss/ss.htm (333 words)

	SPS: Low-energy MSSM parameters
		Soft SUSY-breaking parameters in diagonal entries of the squark and slepton mass matrices of the first and second generation (approximately equal to the sfermion masses, off-diagonal entries neglected):
		Soft SUSY-breaking parameters in diagonal entries of the squark and slepton mass matrices of the third generation, trilinear couplings:
		All mass parameters are to be understood as DRbar parameters at the scale Q = 548.3 GeV.
	www.ippp.dur.ac.uk /~georg/sps/sps.html (949 words)

	Supersymmetry breaking
		More precisely, to break SUSY - and it is not qualitatively different from a spontaneous breaking of the electroweak symmetry, for example - you need two things: a source of the SUSY breaking and a messenger that communicates it.
		This breaking should be thought of as a complete analogue of the Higgs breaking of the electroweak symmetry.
		The problem then is to keep the cosmological constant very small after the supersymmetry breaking - and not of the expected order m^4 where m is the SUSY breaking scale.
	www.lns.cornell.edu /spr/2001-06/msg0033488.html (769 words)

	WorldSciNet Archives (Site not responding. Last check: 2007-10-08)
		The supersymmetric version of the Nambu–Jona-Lasinio model is investigated in connection with the chiral symmetry breaking induced by a soft SUSY breaking term.
		It is found that the broken chiral symmetry due to the soft breaking term is restored at suitably high temperature and the symmetry restoration occurs as first-order phase transitions.
		The critical temperature at which the chiral symmetry is restored is determined as a function of the strength of the soft breaking term and the field coupling constant.
	www.worldscinetarchives.com /cgi-bin/wsnetarchives/article.cgi?jn=mpla&vol=13&yr=1998&issue=1315&art=S0217732398001303.html (163 words)

	Scenarios for SUSY Breaking
		For breaking supersymmetry at low energies, we expect that a field theoretical effect should be dominant in order to generate the hierarchy of scales (it is hard to believe that a nonperturbative effect at the Planck scale could generate the Weinberg-Salam scale).
		101], since the existence of the conformal anomaly is enough to communicate the breaking of supersymmetry to the observable sector.
		Therefore, there is not yet a compelling scenario for supersymmetry breaking and the field remains open, but now we have a much better perspective on the relevant issues.
	fisica.usac.edu.gt /public/curccaf_proc/quevedo1/node14.html (954 words)

	Program Summary (Site not responding. Last check: 2007-10-08)
		Theoretical constraints on the soft SUSY breaking parameters from a high scale theory are imposed and the parameters at the electroweak scale are obtained from the high scale parameters by evaluating the corresponding renormalization group equations.
		The second issue is to use the obtained masses and couplings for calculating decay widths and branching ratios of supersymmetric particles as well as the cross sections for these particles in electron positron annihilation.
		The third issue is to calculate the following low energy constraints: the branching ratio for b ->sgamma, the SUSY contributions to the rho parameter as well as the SUSY contributions to the anomalous magnetic moment of the muon.
	www.jinr.dubna.su /programs/cpc_in14/ADRV.html (281 words)

	Benjamin Fuks Webpage - Research activity
		Soft SUSY-breaking scenarios constrain SUSY particle masses to lie in the TeV-range, and thus within the discovery range of present and future hadron colliders, such as the Fermilab Tevatron or the CERN LHC.
		Physical masses and mixing angles are calculated with renormalization group equations, linking the restricted set of SUSY breaking parameters at the gauge coupling unification scale to the complete set of SUSY observables at the electroweak scale.
		The precise knowledge of the q_T-spectrum is of vital importance for the SUSY particles, since it can be useful for the reconstruction of their masses, or the determination of their spin.
	lpsc.in2p3.fr /fuks/act_en.html (1867 words)

	MSSM
		Supersymmetry (SUSY) - a symmetry under interchange of bosonic and fermionic degrees of freedom - provides an elegant solution to the hierarchy problem, and has long been considered one of the most promising new physics scenarios among various possibilities.
		Quadratically divergent radiative corrections to the Higgs mass arising from a given particle are cancelled by the corresponding superpartner contributions.
		This non-degeneracy implies that if SUSY exists, it cannot be an exact symmetry of nature and that there exist so-called "soft SUSY-breaking" interactions that split the masses of SM particles and their superpartners.
	www.krl.caltech.edu /~subZ/content/theory/MSSM/MSSM.html (1629 words)

	Soft SUSY breaking, dilaton domination and intermediate scale string models
		Soft SUSY breaking, dilaton domination and intermediate scale string models
		We give a general discussion of soft supersymmetry breaking terms in type-I theories and then investigate the renormalization group running.
		In the dilaton domination scenario, we present the sparticle spectra, analysing constraints from charge and colour breaking, fine tuning and radiative electroweak symmetry breaking.
	stacks.iop.org /1126-6708/2000/i=12/a=026 (339 words)

	[No title] (Site not responding. Last check: 2007-10-08)
		We provide explicit general formulae for the SUSY-breaking soft terms valid for the different types of fluxes, leading to different patterns of soft terms.
		The known finiteness properties of dilaton-dominated soft terms are understood in terms of holography.
		The above results are interpreted in the context of the 4d effective supergravity theory, where flux components correspond to auxiliary fields of e.g.
	www.thphys.uni-heidelberg.de /cgi-bin/abstracts/hep-th:0311241 (260 words)

	Citebase - NON-UNIVERSAL SUSY BREAKING, HIERARCHY AND SQUARK DEGENERACY
		Citebase - NON-UNIVERSAL SUSY BREAKING, HIERARCHY AND SQUARK DEGENERACY
		I discuss non-trivial effects in the soft SUSY breaking terms which appear when one integrates out heavy fields.
		The effects exist only when the SUSY breaking terms are non-universal.
	www.citebase.org /cgi-bin/citations?id=oai:arXiv.org:hep-ph/9503392 (165 words)

	Notes SUSY Breaking
		SUSY can be broken in one of two ways, D-term breaking and F-term breaking.
		The usual game is to set the SUSY breaking scale near the GUT scale, and set the soft mass parameters all at
		In the case of Gravity Mediation, the soft mass parameters arise as
	www.mcelrath.org /Notes/SUSYBreaking (141 words)

	Amazon.com: "susy breaking": Key Phrase page (Site not responding. Last check: 2007-10-08)
		Soft susy breaking gives the sleptons and squarks masses very roughly of order 100 GeV, much...
		are all approx- imately zero outside the string core, the SUSY breaking and the zero modes are confined to the string.
		Soft SUSY breaking lagrangian terms break the degeneracy between ordinary particles and sparticles, leaving the exact relation between the couplings.
	www.amazon.com /phrase/susy-breaking (591 words)

	Soft SUSY breaking \| Topic Definition \| Find the Meaning and Define the Answer of Soft SUSY breaking (Site not responding. Last check: 2007-10-08)
		Find the Meaning and Define the Answer of Soft SUSY breaking
		In theoretical physics, soft SUSY breaking is a supersymmetry breaking by the special kind of terms that do not invalidate certain desirable features of supersymmetry, such as the Bose-Fermi cancellation of the ultraviolet divergences contributing to the mass of the Higgs boson.
		Soft SUSY breaking is usually studied as an explicit symmetry breaking, i.e.
	www.thefreeencyclopedia.com /definition/word.aspx?w=Soft_SUSY_breaking (139 words)

	Soft SUSY breaking and family symmetry
		It also gives a new solution to the SUSY flavour problem by ensuring near family degeneracy of the soft mass SUSY breaking terms.
		However the need to generate large third generation fermion masses means that the group must be strongly broken to SU(2) giving significant corrections to the third family squark and slepton masses.
		We investigate the phenomenological implications of such breaking and show that it leads to new solutions capable of fitting all present experimental measurements and bounds as well as the dark matter abundance.
	stacks.iop.org /1126-6708/2005/i=08/a=031 (323 words)

	The upper bound on mh in the MSSM
		Here we assume the soft SUSY breaking parameters in the diagonal entries of the scalar top mixing matrix to be equal for simplicity,
		In it has recently been analyzed how the values chosen for the other SUSY parameters in the benchmark scenario should be modified in order to obtain the maximal values of
		denotes the soft SUSY breaking parameter in the gaugino sector, and M
	ppewww.ph.gla.ac.uk /preprints/1999/20/DurhamProc/node2.html (622 words)

	Breaking - Wikipedia, the free encyclopedia
		Look up breaking in Wiktionary, the free dictionary.
		Spring breaking, the act of vacationing on spring break
		This disambiguation page lists articles associated with the same title.
	en.wikipedia.org /wiki/Breaking (102 words)

	Scientific Commons: S. Ambrosanio
		We report a study on the measurement of the SUSY breaking scale sqrt(F) in the framework of gauge-mediated supersymmetry breaking (GMSB) models at the LHC.
		Assuming gauge-mediated supersymmetry breaking, we simulate precision measurements of fundamental parameters at a 500 GeV e+e- linear collider in the scenario where a neutralino is the...
		We simulate precision measurements of gauge-mediated supersymmetry breaking (GMSB) parameters at a 500 GeV e+e- linear collider in the scenario where a neutralino is the next-to-lightest...
	en.scientificcommons.org /s_ambrosanio (807 words)

	Oblique Parameters
		These results are to be compared with the predictions of various scenarios for the mediation of SUSY breaking from the hidden to the observable sector.
		For example, in the minimal supergravity model with universal soft SUSY breaking terms, there are regions of parameter space in which T can be as large as 0.20, so they have to be excluded.
		Of course, there are in general also (smaller) contributions to S and U, as well as non-oblique corrections, so much more parameter space can be excluded than what is suggested by the constraint (58).
	dept.physics.upenn.edu /~pgl/precision/wein/node17.html (484 words)

	Activities 2006 (Site not responding. Last check: 2007-10-08)
		In string compactification preserving N=1 SUSY, moduli fields (including the string dilaton) are plausible candidates for the messenger of SUSY breaking at low energy scales.
		In a scenario that moduli-mediated SUSY breaking is significant, the pattern of soft SUSY breaking terms depends crucially on how moduli are stabilized.
		I discuss the correspondence between the pattern of soft terms and the moduli stabilization mechanism within the framework of 4D effective supergravity which is generalized to include SUSY-breaking uplifting potential in a fully consistent manner.
	gesalerico.ft.uam.es /abstract.php?date=20060214 (202 words)

	Superpartners of Standard Model Fermions (Site not responding. Last check: 2007-10-08)
		The left-right sfermion mixing is determined by the product of soft S
		Previously, it was assumed that the soft S
		This is no longer the case, and is more consistent with the treatment of the stop and sbottom.
	cepa.fnal.gov /psm/simulation/mcgen/lund/pythia_manual/pythia6206/node110.html (476 words)

	PHY 880 - Introduction to SUSY field theories
		The minimal SUSY standard model is not discussed much in the book.
		The global SUSY part (about one half) is similar to Bailin and Love, and also introduces supergraphs, but does not discuss SUSY standard model.
		Another good introductory book with a global SUSY part similar to the previous two books, a more detailled discussion of supergraphs and a small supergravity part.
	www.physics.syr.edu /%7Enchatill/Course/PHY880fall2005.htm (732 words)

	Amazon.com: "soft supersymmetry breaking terms": Key Phrase page (Site not responding. Last check: 2007-10-08)
		See all pages with references to soft supersymmetry breaking terms.
		This theory, augmented with suit- able soft supersymmetry breaking terms, is known as the Minimal Supersymmetric Standard Model, or MSSM.
		General soft supersymmetry breaking terms are introduced and their effect on the fermion zero modes considered [13].
	www.amazon.com /phrase/soft-supersymmetry-breaking-terms (529 words)

	APS - 2005 APS April Meeting - Event - SUSY with Non-universal Higgs Masses (Site not responding. Last check: 2007-10-08)
		In supersymetric models with gravity-mediated SUSY breaking, universality of soft SUSY breaking scalar masses is motivated by the need to suppress unwanted flavor changing or $CP$ violating processes.
		The motivation, however, does not apply to soft breaking Higgs masses, which may in general have independent masses from matter scalars at the GUT scale.
		We explore the consequences of both the one-parameter and two-parameter non-universal Higgs mass models (NUHM1 and NUHM2).
	meetings.aps.org /Meeting/APR05/Event/29512 (205 words)

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