Monophoton signals in light gravitino production at e+ e- colliders

被引：0
|
作者：
Mawatari, Kentarou [1 ,2 ,3 ]
Oexl, Bettina [1 ,2 ,3 ]
机构：
[1] Vrije Univ Brussel, Brussels, Belgium
[2] Vrije Univ Brussel, IIHE ELEM, Brussels, Belgium
[3] Int Solvay Inst, B-1050 Brussels, Belgium
来源：
EUROPEAN PHYSICAL JOURNAL C | 2014年 / 74卷 / 06期
关键词：
SINGLE-PHOTON; MISSING ENERGY; P(P)OVER-BAR COLLISIONS; SUPERSYMMETRY BREAKING; SUPERLIGHT GRAVITINO; MASSIVE SGOLDSTINOS; CHIRAL SCALAR; CERN LEP; ROOT-S; EVENTS;
D O I：
10.1140/epjc/s10052-014-2909-0
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
We revisit the monophoton plus missing energy signature at e(+) e(-) colliders in supersymmetric (SUSY) models where the gravitino is very light. There are two possible processes which provide the signal: gravitino pair production and associated gravitino production with a neutralino, leading the monophoton final state via an additional photon radiation and via the neutralino decay, respectively. By using the superspace formalism, we construct a model that allows us to study the parameter space for the both processes. We show that the signal cross section and the photon spectra provide information on the masses of the SUSY particles as well as the SUSY breaking scale.
引用
收藏
页码：1 / 12
页数：12
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