Naturally heavy superpartners and a Little Higgs

We construct an extension of the MSSM in which scalar superpartners can naturally be as heavy as 1 TeV. In the MSSM, the most significant fine tuning stems from the logarithmically enhanced top-stop loop contribution to the soft Higgs mass. We combine supersymmetry with the "simplest little Higgs" to render this loop finite, thereby removing the large logarithm even in models in which superpartner masses are generated at high scales such as in supergravity. Our model predicts an extended Higgs sector, superpartner masses near a TeV and little Higgs partners at a few TeV.Comment: 18 pages, 1 figur

A hidden solution to the mu/B_mu problem in gauge mediation

We propose a solution to the mu/B_mu problem in gauge mediation. The novel feature of our solution is that it uses dynamics of the hidden sector, which is often present in models with dynamical supersymmetry breaking. We give an explicit example model of gauge mediation where a very simple messenger sector generates both mu and B_mu at one loop. The usual problem, that B_mu is then too large, is solved by strong renormalization effects from the hidden sector which suppress B_mu relative to mu. Our mechanism relies on an assumption about the signs of certain incalculable anomalous dimensions in the hidden sector. Making these assumptions not only allows us to solve the mu/B_mu problem but also leads to a characteristic superpartner spectrum which would be a smoking gun signal for our mechanism.Comment: minor clarifications, examples added, version to appear in PR

Phenomenology of SUSY with scalar sequestering

The defining feature of scalar sequestering is that the MSSM squark and slepton masses as well as all entries of the scalar Higgs mass matrix vanish at some high scale. This ultraviolet boundary condition - scalar masses vanish while gaugino and Higgsino masses are unsuppressed - is independent of the supersymmetry breaking mediation mechanism. It is the result of renormalization group scaling from approximately conformal strong dynamics in the hidden sector. We review the mechanism of scalar sequestering and prove that the same dynamics which suppresses scalar soft masses and the B_mu term also drives the Higgs soft masses to -|mu|^2. Thus the supersymmetric contribution to the Higgs mass matrix from the mu-term is exactly canceled by the soft masses. Scalar sequestering has two tell-tale predictions for the superpartner spectrum in addition to the usual gaugino mediation predictions: Higgsinos are much heavier (mu > TeV) than scalar Higgses (m_A ~ few hundred GeV), and third generation scalar masses are enhanced because of new positive contributions from Higgs loops.Comment: 16 pages and 3 figure

Ditau jets in Higgs searches

Understanding and identifying ditau jets -- jets consisting of pairs of tau particles, can be of crucial importance and may even turn out to be a necessity if the Higgs boson decays dominantly to new light scalars which, on the other hand, decay to tau pairs. As often seen in various models of BSM such as in the NMSSM, Higgs portals etc., the lightness of these new states ensures their large transverse momenta and, as a consequence, the collinearity of their decay products. We show that the non-standard signatures of these objects, which can easily be missed by standard analysis techniques, can be superbly exploited in an analysis based on subjet observables. When combined with additional selection strategies, this analysis can even facilitate an early discovery of the Higgs boson. To be specific, a light Higgs can be found with $S/\sqrt{B} \gtrsim 5$ from $\mathcal {L} \simeq 12 fb^{-1}$ of data. We combine all these observables into a single discriminating likelihood that can be employed toward the construction of a realistic and standalone ditau tagger.Comment: 9 pages, 9 figures. References added, typos corrected, published versio

Post‑caesarean vesicouterine fistula: Youssef’s syndrome a case report

Vesicouterine fistula is an uncommon urogynecological fistula, typically induced following lower uterine segment cesarean section, especially an emergency one. The classical clinical features of Youssef’s syndrome are cyclical hematuria, amenorrhea, and urinary continence. The index case reported was a 30 year‐old multipara who had two previous lower segment cesarean sections, underwent a third-time cesarean section and developed urinary incontinence and hematuria on the second week of the post-operative period. CECT urography confirmed vesicouterine fistula. The fistula was managed conservatively

Successful pregnancy outcome in a case of Eisenmenger syndrome

Eisenmenger syndrome is a very rare heart disease in pregnant women. Eisenmenger syndrome is defined as pulmonary hypertension resulting from an uncorrected left to right shunt of a VSD, ASD or patent ductus arteriosus (PDA), with subsequent shunt reversal and cyanosis. Pulmonary hypertension is the prognosis index. The high mortality risk (25-30%) is associated with pregnancy and the peripartum period due to cardiovascular collapse. Pregnancy should be discouraged and reliable contraception, preferably permanent sterilization, advised because of the extreme risk associated with pregnancy. Depo-Provera or progesterone implants are nonsurgical alternatives. Even first-trimester termination is associated with a maternal mortality rate of 5-10%. However, despite all the risks, a few patients deliver successfully with a good maternal and neonatal outcome. We presented a 27-year-old booked G1P0+0 admitted at 34 weeks gestation with Eisenmenger syndrome. She was treated medically during pregnancy, underwent elective caesarean section at 34 weeks of gestation delivered a baby and was subsequently discharged on the 15th postoperative day without any serious complications