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Hunting squarks in Higgsino LSP scenarios at the LHC

Les recherches actuelles de squarks sont inefficaces dans les cas où le squark ne se désintègre pas directement en particule supersymétrique (LSP) la plus légère, car ces désintégrations sont supprimées par Yukawa. Cela se produit lors de la production des deux premières générations de carrés et lorsque, en même temps, il y a plusieurs électrofaibles plus légers que ces carrés. Dans cet article, nous analysons le signal de la production de paires de squarks qui se désintègrent ensuite en un neutralino intermédiaire (${\stackrel{\texttildelow{}}{\ensuremath{\chi}}}_{3}^{0}$ ) plus les jets. Le neutralino se décomposera ensuite en LSP (principalement en Higgsino) et en Higgs. Nous avons simulé les événements et conçu une stratégie de découverte basée sur un signal de deux jets, quatre quarks $b$ et une énergie transversale manquante. Nous obtenons des valeurs très prometteuses pour la sensibilité du Grand collisionneur de hadrons à 14 TeV et 300 $ \text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ .
Las búsquedas actuales de squarks son ineficientes en los casos en que el squark no se descompone directamente en la partícula supersimétrica más ligera (LSP), porque esas desintegraciones se suprimen en Yukawa. Esto ocurre cuando se producen las dos primeras generaciones de squarks y cuando, al mismo tiempo, hay varios electrodébiles más ligeros que esos squarks. En este artículo, analizamos la señal de la producción de pares de cuadrados que posteriormente decaen a un neutralino intermedio (${\stackrel{\texttildelow{}}{\ensuremath{\chi}}}_{3}^{0}$) más chorros. El neutralino se descompondrá en el LSP (principalmente Higgsino) y un Higgs. Hemos simulado los eventos y diseñado una estrategia de descubrimiento basada en una señal de dos chorros, cuatro quarks $b$ y energía transversal faltante. Obtenemos valores muy prometedores para la sensibilidad del Gran Colisionador de Hadrones a 14 TeV y $ 300\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$.
Current searches for squarks are inefficient in cases when the squark does not directly decay to the lightest supersymmetric particle (LSP), because those decays are Yukawa suppressed. This occurs when producing the first two generations of squarks and when, at the same time, there are several electroweakinos lighter than those squarks. In this paper, we analyze the signal of the pair production of squarks that subsequently decay to an intermediate neutralino (${\stackrel{\texttildelow{}}{\ensuremath{\chi}}}_{3}^{0}$) plus jets. The neutralino will then decay to the LSP (mainly Higgsino) and a Higgs. We have simulated the events and designed a discovery strategy based on a signal of two jets, four $b$ quarks, and missing transverse energy. We obtain very promising values for the Large Hadron Collider sensitivity at 14 TeV and $300\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$.
تكون عمليات البحث الحالية عن الكواركات غير فعالة في الحالات التي لا يتحلل فيها الصرصور مباشرة إلى أخف الجسيمات فائقة التناظر (LSP)، لأن تلك الاضمحلالات يتم قمعها في يوكاوا. يحدث هذا عند إنتاج الجيلين الأولين من الكواركات وعندما يكون هناك في الوقت نفسه العديد من الكهرومغناطيسية أخف من تلك الكواركات. في هذه الورقة، نقوم بتحليل إشارة إنتاج الزوج من الكواركات التي تتحلل لاحقًا إلى محايد وسيط (${\ stackrel {\ texttildelow {}}{\ensuremath {\chi }}}_{ 3 }^{ 0 }$) بالإضافة إلى الطائرات النفاثة. ثم يتحلل المحايد إلى LSP (بشكل أساسي هيغسينو) وهيغز. لقد قمنا بمحاكاة الأحداث وصممنا استراتيجية اكتشاف بناءً على إشارة من طائرتين نفاثتين، وأربعة كواركات بقيمة مليار دولار، وطاقة عرضية مفقودة. نحصل على قيم واعدة للغاية لحساسية مصادم الهدرونات الكبير عند 14 تيف و 300 دولار\text{}\ text {} {\ mathrm {fb }}^{\ensuremath {-}1 }$.
- University of Notre Dame United States
- Spanish National Research Council Spain
- National Scientific and Technical Research Council Argentina
- Autonomous University of Madrid Spain
- Institute for High Energy Physics Spain
Lightest Supersymmetric Particle, Nuclear and High Energy Physics, Pair production, Supersymmetry Phenomenolgoy, Higgs boson, Economics, Advancements in Particle Detector Technology, Neutralino, Nuclear physics, Macroeconomics, FOS: Physical sciences, Electron, Lepton, Particle Dark Matter and Detection Methods, High Energy Physics - Phenomenology (hep-ph), https://purl.org/becyt/ford/1.3, Dark Matter, Production (economics), Particle Physics and High-Energy Collider Experiments, https://purl.org/becyt/ford/1, Physics, Missing energy, Particle physics, Física, Silicon Detectors, High Energy Physics - Phenomenology, Physics and Astronomy, Large Hadron Collider, Minimal Supersymmetric Standard Model, Collider Physics, Physical Sciences, Quark, Higgsino, Yukawa potential, LHC, Supersymmetry
Lightest Supersymmetric Particle, Nuclear and High Energy Physics, Pair production, Supersymmetry Phenomenolgoy, Higgs boson, Economics, Advancements in Particle Detector Technology, Neutralino, Nuclear physics, Macroeconomics, FOS: Physical sciences, Electron, Lepton, Particle Dark Matter and Detection Methods, High Energy Physics - Phenomenology (hep-ph), https://purl.org/becyt/ford/1.3, Dark Matter, Production (economics), Particle Physics and High-Energy Collider Experiments, https://purl.org/becyt/ford/1, Physics, Missing energy, Particle physics, Física, Silicon Detectors, High Energy Physics - Phenomenology, Physics and Astronomy, Large Hadron Collider, Minimal Supersymmetric Standard Model, Collider Physics, Physical Sciences, Quark, Higgsino, Yukawa potential, LHC, Supersymmetry
citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).0 popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.Average influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).Average impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.Average visibility views 26 download downloads 31 - 26views31downloads
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