Signatures of non-universal soft breaking sfermion masses at hadron colliders

Datta, Amitava; Datta, AseshKrishna; Parida, M. K.

doi:10.1016/s0370-2693(98)00507-3

Cited by 26 publications

(25 citation statements)

References 20 publications

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“…The phenomenology of the lighterd R have been studied by several authors [7,8]. In this work we shall extend and complement these studies in several ways.…”

Section: Introductionmentioning

confidence: 80%

Signatures of the light tilded scenario at the upgraded tevatron

Datta¹,

Maity²,

Datta³

2001

J. Phys. G: Nucl. Part. Phys.

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In scenarios with relatively light down squarks, motivated, e.g., by SO(10) D terms, jets + E T signals can be observed at the luminosity upgraded Tevatron even if the squarks are much heavier than the gluinos and the common gaugino mass (M1 2 ) at M G lies above the LEP allowed lower bound . In the conventional mSUGRA model with heavy squarks practically no signal is expected in this channel. The possiblity of distinguishing between various SUGRA motivated scenarios by exploiting the E T and jet p T distributions, opposite sign dileptons + jets + E T events and clean trilepton signals have been discussed.

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“…The phenomenology of the lighterd R have been studied by several authors [7,8]. In this work we shall extend and complement these studies in several ways.…”

Section: Introductionmentioning

confidence: 80%

Signatures of the light tilded scenario at the upgraded tevatron

Datta¹,

Maity²,

Datta³

2001

J. Phys. G: Nucl. Part. Phys.

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“…The breakdown of SO(10) (without any intermediate scale) to the SM gauge group, which amounts to a reduction of rank, will therefore endow the scalars in these different SU (5) representations with different Dterms [37]. Consequently, the high-scale scalar mass parameters will be different for the two multiplets respectively for5 and 10: [38,39] …”

Section: Non-universality Due To So(10) D-termsmentioning

confidence: 99%

“…While the first scenario is purely phenomenological, the second one is motivated by the so-called 'inverted hierarchy' at a high scale, which is advocated as a solution to the flavour problem [32][33][34][35][36]. The third case concerns a particular theoretical picture where physics between the Planck and GUT scales affects the masses of sfermions in different sub-representations of SO(10), leading to different low-energy mass patterns [37][38][39].…”

Section: Introductionmentioning

confidence: 99%

Nonuniversal scalar masses: A signal-based analysis for the CERN Large Hadron Collider

2008

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Abstract:We study the possible signatures of non-universal scalar masses in supersymmetry at the Large Hadron Collider (LHC). This is done, following our recent study on gaugino non-universality, via a multichannel analysis, based largely on the ratios of event rates for different final states, aimed at minimizing irregularity in the pattern due to extraneous effects and errors. We have studied (a) squark-slepton non-universality, (b) non-universality in sfermion masses of the third family, (c) the effects of SO(10) D-terms in supersymmetric Grand Unified Theories. After presenting an elaborate numerical analysis of like-and opposite-sign dileptons, inclusive and hadronically quiet trileptons as well as inclusive jet final states, we point out specific features of the spectrum in each case, which can be differentiated in the above channels from the spectrum for a minimal supergravity scenario with a universal scalar mass at high scale. The event selection criteria, and the situations where the signals are sizable enough for a comparatve study, are also delineated. It is found that, with some exceptions, the trilepton channels are likely to be especially useful for this purpose.

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“…In the scalar sector, while certain SUSY-GUT effects like SO(10) D-terms can lead to non-universality of mass parameters at high scale [16,17,18,19], it is generally difficult to accommodate squarks much heavier than sleptons in such a framework. One cannot however rule out, for example, additional U(1) symmetries under which the squarks and sleptons have widely disparate charges, and which breaks to make the squarks much heavier than sleptons via D-terms.…”

Section: Non-universality and Hadronically Quiet Signalsmentioning

confidence: 99%

Nonuniversal gaugino and scalar masses, hadronically quiet trileptons, and the Large Hadron Collider

2008

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We investigate the parameter space of the minimal supersymmetric Standard Model (MSSM) where the gluino and squark masses are much above 1 TeV but the remaining part of the sparticle spectrum is accessible to the Large Hadron Collider at CERN.After pointing out that such a scenario may constitute an important benchmark of gaugino/scalar non-universality, we find that hadronically quiet trileptons are rather useful signals for it. Regions of the parameter space, where the signal is likely to be appreciable, are identified through a detailed scan. The advantage of hadronically quiet trileptons over other types of signals is demonstrated.

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Signatures of non-universal soft breaking sfermion masses at hadron colliders

Cited by 26 publications

References 20 publications

Signatures of the light tilded scenario at the upgraded tevatron

Signatures of the light tilded scenario at the upgraded tevatron

Nonuniversal scalar masses: A signal-based analysis for the CERN Large Hadron Collider

Nonuniversal gaugino and scalar masses, hadronically quiet trileptons, and the Large Hadron Collider

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