Enhancing the discovery prospects for SUSY-like decays with a forgotten kinematic variable

Debnath, Dipsikha; Gainer, James S.; Kilic, Can; Kim, Doojin; Matchev, Konstantin T.; Yang, Yuan-Pao

doi:10.1007/JHEP05(2019)008

Enhancing the discovery prospects for SUSY-like decays with a forgotten kinematic variable

Journal Article · Thu May 02 00:00:00 EDT 2019 · Journal of High Energy Physics (Online)

DOI:https://doi.org/10.1007/JHEP05(2019)008· OSTI ID:1597937

Debnath, Dipsikha ^[1]; Gainer, James S. ^[2]; ^[3]; Kim, Doojin ^[4]; Matchev, Konstantin T. ^[5]; Yang, Yuan-Pao ^[3]

Univ. of Florida, Gainesville, FL (United States); Rutgers Univ., Piscataway, NJ (United States); UH High Energy Physics Group
Univ. of Hawaii, Honolulu, HI (United States)
Univ. of Texas, Austin, TX (United States)
European Organization for Nuclear Research (CERN), Geneva (Switzerland); Univ. of Arizona, Tucson, AZ (United States)
Univ. of Florida, Gainesville, FL (United States)

The lack of a new physics signal thus far at the Large Hadron Collider motivates us to consider how to look for challenging final states, with large Standard Model backgrounds and subtle kinematic features, such as cascade decays with compressed spectra. Adopting a benchmark SUSY-like decay topology with a four-body final state proceeding through a sequence of two-body decays via intermediate resonances, we focus our attention on the kinematic variable Δ₄ which previously has been used to parameterize the boundary of the allowed four-body phase space. We highlight the advantages of using Δ₄ as a discovery variable, and present an analysis suggesting that the pairing of Δ₄ with another invariant mass variable leads to a significant improvement over more conventional variable choices and techniques.

View Accepted Manuscript (DOE)

Research Organization:: Univ. of Hawaii, Honolulu, HI (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25); National Science Foundation; Korean Research Foundation

Grant/Contract Number:: SC0010504; SC0010296; SC0009913; SC0009913

OSTI ID:: 1597937

Journal Information:: Journal of High Energy Physics (Online), Journal Name: Journal of High Energy Physics (Online) Journal Issue: 5 Vol. 2019; ISSN 1029-8479

Publisher:: Springer BerlinCopyright Statement

Country of Publication:: United States

Language:: English

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