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Search for Supersymmetry with a Compressed Mass Spectrum in Events with a Soft τ Lepton, a Highly Energetic Jet, and Large Missing Transverse Momentum in Proton-Proton Collisions at sqrt[s]=13  TeV.

Journal articles  - Journal Article
Sirunyan, AM; Tumasyan, A; Adam, W; Ambrogi, F; Bergauer, T; Brandstetter, J; Dragicevic, M; Erö, J; Escalante Del Valle, A; Flechl, M; Liko, D ...
Published in: Physical review letters
January 2020

The first search for supersymmetry in events with an experimental signature of one soft, hadronically decaying τ lepton, one energetic jet from initial-state radiation, and large transverse momentum imbalance is presented. These event signatures are consistent with direct or indirect production of scalar τ leptons (τ[over ˜]) in supersymmetric models that exhibit coannihilation between the τ[over ˜] and the lightest neutralino (χ[over ˜]_{1}^{0}), and that could generate the observed relic density of dark matter. The data correspond to an integrated luminosity of 77.2  fb^{-1} of proton-proton collisions at sqrt[s]=13  TeV collected with the CMS detector at the LHC in 2016 and 2017. The results are interpreted in a supersymmetric scenario with a small mass difference (Δm) between the chargino (χ[over ˜]_{1}^{±}) or next-to-lightest neutralino (χ[over ˜]_{2}^{0}), and the χ[over ˜]_{1}^{0}. The mass of the τ[over ˜] is assumed to be the average of the χ[over ˜]_{1}^{±} and χ[over ˜]_{1}^{0} masses. The data are consistent with standard model background predictions. Upper limits at 95% confidence level are set on the sum of the χ[over ˜]_{1}^{±}, χ[over ˜]_{2}^{0}, and τ[over ˜] production cross sections for Δm(χ[over ˜]_{1}^{±},χ[over ˜]_{1}^{0})=50  GeV, resulting in a lower limit of 290 GeV on the mass of the χ[over ˜]_{1}^{±}, which is the most stringent to date and surpasses the bounds from the LEP experiments.

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Published In

Physical review letters

DOI

EISSN

1079-7114

ISSN

0031-9007

Publication Date

January 2020

Volume

124

Issue

4

Start / End Page

041803

Related Subject Headings

  • General Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering
 

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Sirunyan, A. M., Tumasyan, A., Adam, W., Ambrogi, F., Bergauer, T., Brandstetter, J., … Steinbrück, G. (2020). Search for Supersymmetry with a Compressed Mass Spectrum in Events with a Soft τ Lepton, a Highly Energetic Jet, and Large Missing Transverse Momentum in Proton-Proton Collisions at sqrt[s]=13  TeV. Physical Review Letters, 124(4), 041803. https://doi.org/10.1103/physrevlett.124.041803
Sirunyan, A. M., A. Tumasyan, W. Adam, F. Ambrogi, T. Bergauer, J. Brandstetter, M. Dragicevic, et al. “Search for Supersymmetry with a Compressed Mass Spectrum in Events with a Soft τ Lepton, a Highly Energetic Jet, and Large Missing Transverse Momentum in Proton-Proton Collisions at sqrt[s]=13  TeV.Physical Review Letters 124, no. 4 (January 2020): 041803. https://doi.org/10.1103/physrevlett.124.041803.
Sirunyan, A. M., et al. “Search for Supersymmetry with a Compressed Mass Spectrum in Events with a Soft τ Lepton, a Highly Energetic Jet, and Large Missing Transverse Momentum in Proton-Proton Collisions at sqrt[s]=13  TeV.Physical Review Letters, vol. 124, no. 4, Jan. 2020, p. 041803. Epmc, doi:10.1103/physrevlett.124.041803.
Sirunyan AM, Tumasyan A, Adam W, Ambrogi F, Bergauer T, Brandstetter J, Dragicevic M, Erö J, Escalante Del Valle A, Flechl M, Frühwirth R, Jeitler M, Krammer N, Krätschmer I, Liko D, Madlener T, Mikulec I, Rad N, Schieck J, Schöfbeck R, Spanring M, Spitzbart D, Waltenberger W, Wulz C-E, Zarucki M, Drugakov V, Mossolov V, Suarez Gonzalez J, Darwish MR, De Wolf EA, Di Croce D, Janssen X, Lelek A, Pieters M, Rejeb Sfar H, Van Haevermaet H, Van Mechelen P, Van Putte S, Van Remortel N, Blekman F, Bols ES, Chhibra SS, D’Hondt J, De Clercq J, Lontkovskyi D, Lowette S, Marchesini I, Moortgat S, Python Q, Skovpen K, Tavernier S, Van Doninck W, Van Mulders P, Beghin D, Bilin B, Brun H, Clerbaux B, De Lentdecker G, Delannoy H, Dorney B, Favart L, Grebenyuk A, Kalsi AK, Popov A, Postiau N, Starling E, Thomas L, Vander Velde C, Vanlaer P, Vannerom D, Cornelis T, Dobur D, Khvastunov I, Niedziela M, Roskas C, Tytgat M, Verbeke W, Vermassen B, Vit M, Bondu O, Bruno G, Caputo C, David P, Delaere C, Delcourt M, Giammanco A, Lemaitre V, Prisciandaro J, Saggio A, Vidal Marono M, Vischia P, Zobec J, Alves FL, Alves GA, Correia Silva G, Hensel C, Moraes A, Rebello Teles P, Belchior Batista Das Chagas E, Carvalho W, Chinellato J, Coelho E, Da Costa EM, Da Silveira GG, De Jesus Damiao D, De Oliveira Martins C, Fonseca De Souza S, Huertas Guativa LM, Malbouisson H, Martins J, Matos Figueiredo D, Medina Jaime M, Melo De Almeida M, Mora Herrera C, Mundim L, Nogima H, Prado Da Silva WL, Sanchez Rosas LJ, Santoro A, Sznajder A, Thiel M, Tonelli Manganote EJ, Torres Da Silva De Araujo F, Vilela Pereira A, Bernardes CA, Calligaris L, Tomei TRFP, Gregores EM, Lemos DS, Mercadante PG, Novaes SF, Padula SS, Aleksandrov A, Antchev G, Hadjiiska R, Iaydjiev P, Misheva M, Rodozov M, Shopova M, Sultanov G, Bonchev M, Dimitrov A, Ivanov T, Litov L, Pavlov B, Petkov P, Fang W, Gao X, Yuan L, Chen GM, Chen HS, Chen M, Jiang CH, Leggat D, Liao H, Liu Z, Spiezia A, Tao J, Yazgan E, Zhang H, Zhang S, Zhao J, Agapitos A, Ban Y, Chen G, Levin A, Li J, Li L, Li Q, Mao Y, Qian SJ, Wang D, Wang Q, Ahmad M, Hu Z, Wang Y, Xiao M, Avila C, Cabrera A, Florez C, González Hernández CF, Segura Delgado MA, Mejia Guisao J, Ruiz Alvarez JD, Salazar González CA, Vanegas Arbelaez N, Giljanović D, Godinovic N, Lelas D, Puljak I, Sculac T, Antunovic Z, Kovac M, Brigljevic V, Ferencek D, Kadija K, Mesic B, Roguljic M, Starodumov A, Susa T, Ather MW, Attikis A, Erodotou E, Ioannou A, Kolosova M, Konstantinou S, Mavromanolakis G, Mousa J, Nicolaou C, Ptochos F, Razis PA, Rykaczewski H, Tsiakkouri D, Finger M, Kveton A, Tomsa J, Ayala E, Carrera Jarrin E, Assran Y, Elgammal S, Bhowmik S, Carvalho Antunes De Oliveira A, Dewanjee RK, Ehataht K, Kadastik M, Raidal M, Veelken C, Eerola P, Forthomme L, Kirschenmann H, Osterberg K, Voutilainen M, Garcia F, Havukainen J, Heikkilä JK, Karimäki V, Kim MS, Kinnunen R, Lampén T, Lassila-Perini K, Laurila S, Lehti S, Lindén T, Luukka P, Mäenpää T, Siikonen H, Tuominen E, Tuominiemi J, Tuuva T, Besancon M, Couderc F, Dejardin M, Denegri D, Fabbro B, Faure JL, Ferri F, Ganjour S, Givernaud A, Gras P, Hamel de Monchenault G, Jarry P, Leloup C, Lenzi B, Locci E, Malcles J, Rander J, Rosowsky A, Sahin MÖ, Savoy-Navarro A, Titov M, Yu GB, Ahuja S, Amendola C, Beaudette F, Busson P, Charlot C, Diab B, Falmagne G, Granier de Cassagnac R, Kucher I, Lobanov A, Martin Perez C, Nguyen M, Ochando C, Paganini P, Rembser J, Salerno R, Sauvan JB, Sirois Y, Zabi A, Zghiche A, Agram J-L, Andrea J, Bloch D, Bourgatte G, Brom J-M, Chabert EC, Collard C, Conte E, Fontaine J-C, Gelé D, Goerlach U, Jansová M, Le Bihan A-C, Tonon N, Van Hove P, Gadrat S, Beauceron S, Bernet C, Boudoul G, Camen C, Carle A, Chanon N, Chierici R, Contardo D, Depasse P, El Mamouni H, Fay J, Gascon S, Gouzevitch M, Ille B, Jain S, Lagarde F, Laktineh IB, Lattaud H, Lesauvage A, Lethuillier M, Mirabito L, Perries S, Sordini V, Torterotot L, Touquet G, Vander Donckt M, Viret S, Khvedelidze A, Tsamalaidze Z, Autermann C, Feld L, Kiesel MK, Klein K, Lipinski M, Meuser D, Pauls A, Preuten M, Rauch MP, Schulz J, Teroerde M, Wittmer B, Erdmann M, Fischer B, Ghosh S, Hebbeker T, Hoepfner K, Keller H, Mastrolorenzo L, Merschmeyer M, Meyer A, Millet P, Mocellin G, Mondal S, Mukherjee S, Noll D, Novak A, Pook T, Pozdnyakov A, Quast T, Radziej M, Rath Y, Reithler H, Roemer J, Schmidt A, Schuler SC, Sharma A, Wiedenbeck S, Zaleski S, Flügge G, Haj Ahmad W, Hlushchenko O, Kress T, Müller T, Nowack A, Pistone C, Pooth O, Roy D, Sert H, Stahl A, Aldaya Martin M, Asmuss P, Babounikau I, Bakhshiansohi H, Beernaert K, Behnke O, Bermúdez Martínez A, Bertsche D, Bin Anuar AA, Borras K, Botta V, Campbell A, Cardini A, Connor P, Consuegra Rodríguez S, Contreras-Campana C, Danilov V, De Wit A, Defranchis MM, Diez Pardos C, Domínguez Damiani D, Eckerlin G, Eckstein D, Eichhorn T, Elwood A, Eren E, Gallo E, Geiser A, Grohsjean A, Guthoff M, Haranko M, Harb A, Jafari A, Jomhari NZ, Jung H, Kasem A, Kasemann M, Kaveh H, Keaveney J, Kleinwort C, Knolle J, Krücker D, Lange W, Lenz T, Lidrych J, Lipka K, Lohmann W, Mankel R, Melzer-Pellmann I-A, Meyer AB, Meyer M, Missiroli M, Mittag G, Mnich J, Mussgiller A, Myronenko V, Pérez Adán D, Pflitsch SK, Pitzl D, Raspereza A, Saibel A, Savitskyi M, Scheurer V, Schütze P, Schwanenberger C, Shevchenko R, Singh A, Tholen H, Turkot O, Vagnerini A, Van De Klundert M, Walsh R, Wen Y, Wichmann K, Wissing C, Zenaiev O, Zlebcik R, Aggleton R, Bein S, Benato L, Benecke A, Blobel V, Dreyer T, Ebrahimi A, Feindt F, Fröhlich A, Garbers C, Garutti E, Gonzalez D, Gunnellini P, Haller J, Hinzmann A, Karavdina A, Kasieczka G, Klanner R, Kogler R, Kovalchuk N, Kurz S, Kutzner V, Lange J, Lange T, Malara A, Multhaup J, Niemeyer CEN, Perieanu A, Reimers A, Rieger O, Scharf C, Schleper P, Schumann S, Schwandt J, Sonneveld J, Stadie H, Steinbrück G. Search for Supersymmetry with a Compressed Mass Spectrum in Events with a Soft τ Lepton, a Highly Energetic Jet, and Large Missing Transverse Momentum in Proton-Proton Collisions at sqrt[s]=13  TeV. Physical review letters. 2020 Jan;124(4):041803.

Published In

Physical review letters

DOI

EISSN

1079-7114

ISSN

0031-9007

Publication Date

January 2020

Volume

124

Issue

4

Start / End Page

041803

Related Subject Headings

  • General Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering