Impact of LSP character on Slepton reach at the LHC

Eckel, Jonathan; Ramsey-Musolf, Michael J.; Shepherd, William; Su, Shufang

doi:10.1007/JHEP11(2014)117

Title: Impact of LSP character on Slepton reach at the LHC

Journal Article · Fri Nov 21 00:00:00 EST 2014 · Journal of High Energy Physics (Online)

DOI:https://doi.org/10.1007/JHEP11(2014)117· OSTI ID:1441362

Eckel, Jonathan ^[1]; Ramsey-Musolf, Michael J. ^[2]; Shepherd, William ^[3]; Su, Shufang ^[1]

Univ. of Arizona, Tucson, AZ (United States)
Univ. of Massachusetts, Amherst, MA (United States). Dept. of Physics; California Inst. of Technology (CalTech), Pasadena, CA (United States)
Univ. of California, Santa Cruz, CA (United States); Santa Cruz Institute for Particle Physics., Santa Cruz, CA (United States)

Searches for supersymmetry at the Large Hadron Collider (LHC) have significantly constrained the parameter space associated with colored superpartners, whereas the constraints on color-singlet superpartners are considerably less severe. In this study, we investigate the dependence of slepton decay branching fractions on the nature of the lightest supersymmetric particle (LSP). In particular, in the Higgsino-like LSP scenarios, both decay branching fractions of $$\sim\atop{ℓ}_L$$ and $$\sim\atop{v}_ℓ$$ depend strongly on the sign and value of M₁/M₂, which has strong implications for the reach of dilepton plus E_T searches for slepton pair production. We extend the experimental results for same flavor, opposite sign dilepton plus E_T searches at the 8TeV LHC to various LSP scenarios. We find that the LHC bounds on sleptons are strongly enhanced for a non-Bino-like LSP: the 95% C.L. limit for m$$\sim\atop{ℓv}_L$$ extends from 300 GeV for a Bino-like LSP to about 370 GeV for a Wino-like LSP. The bound for $$\sim\atop{ℓ}_L$$ with a Higgsino-like LSP is the strongest (~490 GeV) for M₁/M₂ ~ - tan² θ_W and is the weakest (~ 220 GeV) for M₁ /M₂ ~ tan² θ _W. We also calculate prospective slepton search reaches at the 14 TeV LHC. With 100 fb^-1 integrated luminosity, the projected 95% C.L. mass reach for the left-handed slepton varies from 550 (670) GeV for a Bino-like (Winolike) LSP to 900 (390) GeV for a Higgsino-like LSP under the most optimistic (pessimistic) scenario. The reach for the right-handed slepton is about 440 GeV. The corresponding 5σ discovery sensitivity is about 100 GeV smaller. For 300 fb^-1 integrated luminosity, the reach is about 50-100 GeV higher.

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Research Organization:: Univ. of Massachusetts, Amherst, MA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: SC0011095

OSTI ID:: 1441362

Journal Information:: Journal of High Energy Physics (Online), Vol. 2014, Issue 11; ISSN 1029-8479

Publisher:: Springer BerlinCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 23 works

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References (27)

Theories with gauge-mediated supersymmetry breaking Giudice, G. F.; Rattazzi, R. Physics Reports, Vol. 322, Issue 6 https://doi.org/10.1016/S0370-1573(99)00042-3	journal	December 1999
Out of this world supersymmetry breaking Randall, Lisa; Sundrum, Raman Nuclear Physics B, Vol. 557, Issue 1-2 https://doi.org/10.1016/S0550-3213(99)00359-4	journal	September 1999
Gaugino mass without singlets Giudice, Gian F.; Rattazzi, Riccardo; Luty, Markus A. Journal of High Energy Physics, Vol. 1998, Issue 12 https://doi.org/10.1088/1126-6708/1998/12/027	journal	December 1998
Phenomenological consequences of supersymmetry with anomaly induced masses Gherghetta, Tony; Giudice, Gian F.; Wells, James D. Nuclear Physics B, Vol. 559, Issue 1-2 https://doi.org/10.1016/S0550-3213(99)00429-0	journal	October 1999
The road to no-scale supergravity Lahanas, A. Physics Reports, Vol. 145, Issue 1-2 https://doi.org/10.1016/0370-1573(87)90034-2	journal	January 1987
Constraint on the Photino Mass from Cosmology Goldberg, H. Physical Review Letters, Vol. 50, Issue 19 https://doi.org/10.1103/PhysRevLett.50.1419	journal	May 1983
Supersymmetric relics from the big bang Ellis, John; Hagelin, J. S.; Nanopoulos, D. V. Nuclear Physics B, Vol. 238, Issue 2 https://doi.org/10.1016/0550-3213(84)90461-9	journal	June 1984
Exact cross sections for the neutralino WIMP pair-annihilation Nihei, Takeshi; Roszkowski, Leszek; Austri, Roberto Ruiz de Journal of High Energy Physics, Vol. 2002, Issue 03 https://doi.org/10.1088/1126-6708/2002/03/031	journal	March 2002
Gaugino and higgsino coannihilations I: neutralino-neutralino interactions Birkedal-Hansen, Andreas; Jeong, Eunhwa Journal of High Energy Physics, Vol. 2003, Issue 02 https://doi.org/10.1088/1126-6708/2003/02/047	journal	February 2003
First Determination of the Weak Charge of the Proton Androic, D.; Armstrong, D. S.; Asaturyan, A. Physical Review Letters, Vol. 111, Issue 14 https://doi.org/10.1103/PhysRevLett.111.141803	journal	October 2013
Muon anomalous magnetic dipole moment in the minimal supersymmetric standard model Moroi, Takeo Physical Review D, Vol. 53, Issue 11 https://doi.org/10.1103/PhysRevD.53.6565	journal	June 1996
Semileptonic decays of light quarks beyond the Standard Model Cirigliano, Vincenzo; Jenkins, James P.; González-Alonso, Martín Nuclear Physics B, Vol. 830, Issue 1-2 https://doi.org/10.1016/j.nuclphysb.2009.12.020	journal	May 2010
On the detectability of sleptons at large hadron colliders del Aguila, F.; Ametller, Ll. Physics Letters B, Vol. 261, Issue 3 https://doi.org/10.1016/0370-2693(91)90336-O	journal	May 1991
Sleptons at post-WMAP benchmark points at LHC (CMS) Andreev, Yu. M.; Bityukov, S. I.; Krasnikov, N. V. Physics of Atomic Nuclei, Vol. 68, Issue 2 https://doi.org/10.1134/1.1866389	journal	February 2005
Slepton discovery in electroweak cascade decay Eckel, Jonathan; Shepherd, William; Su, Shufang Journal of High Energy Physics, Vol. 2012, Issue 5 https://doi.org/10.1007/JHEP05(2012)081	journal	May 2012
Measuring slepton masses and mixings at the LHC Feng, Jonathan L.; French, Sky T.; Galon, Iftah Journal of High Energy Physics, Vol. 2010, Issue 1 https://doi.org/10.1007/JHEP01(2010)047	journal	January 2010
Search for flavor lepton number violation in slepton decays at LHC Krasnikov, N. V. Journal of Experimental and Theoretical Physics Letters, Vol. 65, Issue 2 https://doi.org/10.1134/1.567315	journal	January 1997
Mass splitting between charged and neutral winos at two-loop level Ibe, Masahiro; Matsumoto, Shigeki; Sato, Ryosuke Physics Letters B, Vol. 721, Issue 4-5 https://doi.org/10.1016/j.physletb.2013.03.015	journal	April 2013
Search for scalar leptons and scalar quarks at LEP Achard, P.; Adriani, O.; Aguilar-Benitez, M. Physics Letters B, Vol. 580, Issue 1-2 https://doi.org/10.1016/j.physletb.2003.10.010	journal	January 2004
Absolute lower limits on the masses of selectrons and sneutrinos in the MSSM Heister, A.; Schael, S.; Barate, R. Physics Letters B, Vol. 544, Issue 1-2 https://doi.org/10.1016/S0370-2693(02)02471-1	journal	September 2002
PYTHIA 6.4 physics and manual Sjöstrand, Torbjörn; Mrenna, Stephen; Skands, Peter Journal of High Energy Physics, Vol. 2006, Issue 05 https://doi.org/10.1088/1126-6708/2006/05/026	journal	May 2006
DELPHES 3: a modular framework for fast simulation of a generic collider experiment de Favereau, J.; Delaere, C.; Demin, P. Journal of High Energy Physics, Vol. 2014, Issue 2 https://doi.org/10.1007/JHEP02(2014)057	journal	February 2014
Revisiting slepton pair production at the Large Hadron Collider Fuks, Benjamin; Klasen, Michael; Lamprea, David R. Journal of High Energy Physics, Vol. 2014, Issue 1 https://doi.org/10.1007/JHEP01(2014)168	journal	January 2014
Measuring masses of semi-invisibly decaying particle pairs produced at hadron colliders Lester, C. G.; Summers, D. J. Physics Letters B, Vol. 463, Issue 1 https://doi.org/10.1016/S0370-2693(99)00945-4	journal	September 1999
A variable for measuring masses at hadron colliders when missing energy is expected; m _{T 2} : the truth behind the glamour Barr, Alan; Lester, Christopher; Stephens, Phil Journal of Physics G: Nuclear and Particle Physics, Vol. 29, Issue 10 https://doi.org/10.1088/0954-3899/29/10/304	journal	September 2003
Minimal kinematic constraints and m _{T 2} Cheng, Hsin-Chia; Han, Zhenyu Journal of High Energy Physics, Vol. 2008, Issue 12 https://doi.org/10.1088/1126-6708/2008/12/063	journal	December 2008
Confidence level computation for combining searches with small statistics Junk, Thomas Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 434, Issue 2-3 https://doi.org/10.1016/S0168-9002(99)00498-2	journal	September 1999

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