Asking for an extra photon in Higgs production at the LHC and beyond

We study the inclusive production of a Higgs boson in association with a high-$p_T$ photon at the LHC, detailing the leading-order features of the main processes contributing to the $H\gamma$ final state. Requiring an extra hard photon in Higgs production upsets the cross-section hierarchy for the dominant channels. The $H\gamma$ inclusive production comes mainly from photons radiated in vector-boson fusion (VBF), which accounts for about 2/3 of the total rate, for $p_T^{\gamma,j} >30$ GeV, at leading order. On the other hand, radiating a high-$p_T$ photon in the main top-loop Higgs channel implies an extra parton in the final state, which suppresses the production rate by a further $\alpha_S$ power. As a result, the $H\gamma$ production via top loops at the LHC has rates comparable with the ones arising from either the $H t\bar t$ production or the $HW(Z)\gamma$ associated production. Then, in order of decreasing cross section, comes the single-top-plus-Higgs channel, followed in turn by the heavy-flavor fusion processes $b\bar b \to H\gamma$ and $c\bar c \to H\gamma$. The $H\gamma$ production via electroweak loops has just a minor role. At larger c.m. energies, the $H t\bar t\gamma$ channel surpasses the total contribution of top-loop processes. In particular, requiring $p_T^{\gamma,j} >30$ GeV at $\sqrt S \simeq 100$ TeV, $H t\bar t\gamma$ accounts for about $1/4$ of the inclusive $H\gamma$ production at leading order, about half of the total being due to VBF production.Comment: 20 pages, 13 figures, two comments added; one typo corrected; version published in JHE

Mensajes colusivos en subastas con costos de entrada

Las subastas son mecanismos para asignar recursos ampliamente utilizados en diferentes países. No obstante están sujetas a actividades "ilegales" como la colusión que suele darse mediante acuerdos entre los distintos postores, los cuales pueden ser implícitos o explícitos. En este trabajo intentaremos encontrar un ejemplo donde el parloteo puede ser un medio efectivo para que al menos uno de los participantes (emisor) mejore su pago esperado en la subasta, a pesar de que el mensaje no tenga ningún costo asociado, no pueda tomarse como un compromiso ni como una amenaza para el otro participante, y que no exista efecto reputación.Auctions are widely used mechanisms to allocate resources in different countries. However they are subject to “illegal” activities such as collusion that usually takes the form of an implicit or explicit agreement among participants. In this paper we will try to find an example in which cheap-talk could be an effective tool for at least one bidder to have a betterexpected pay off. We obtain this result even though the signal is costless or does not take the form of an engagement or threat for the other participant and does has reputation effects.Fil: Gabrielli, Maria Florencia. Universidad Nacional de Cuyo. Facultad de Ciencias Económicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mendoza; ArgentinaFil: Latorre, Roberto. Universidad Nacional de Cuyo. Facultad de Ciencias Económicas; Argentin

Higgs Boson Production in Association with a Photon in Vector Boson Fusion at the LHC

Higgs boson production in association with two forward jets and a central photon at the CERN Large Hadron Collider is analyzed, for the Higgs boson decaying into a b bbar pair in the m_H <= 140 GeV mass region. We study both irreducible and main reducible backgrounds at parton level. Compared to the Higgs production via vector-boson fusion, the request of a further photon at moderate rapidities dramatically enhances the signal/background ratio. Inclusive cross sections for p_T^\gamma >= 20 GeV can reach a few tens of fb's. After a suitable choice of kinematical cuts, the cross-section ratio for signal and irreducible-background can be enhanced up to >= ~1/10, with a signal cross section of the order of a few fb's, for m_H ~ 120 GeV. The request of a central photon radiation also enhances the relative signal sensitivity to the WWH coupling with respect to the ZZH coupling. Hence, a determination of the cross section for the associated production of a Higgs boson decaying into a b bbar pair plus a central photon in vector-boson fusion could help in constraining the b bbar H coupling, and the WWH coupling as well. A preliminary study of QCD showering effects points to a further significant improvement of the signal detectability over the background.Comment: 30 pages, 8 figures, 8 tables; minor corrections to the text; version appeared in Nuclear Physics

Bounds on charged-lepton flavor violations via resonant scattering

We explore the possibility of probing flavor violations in the charged-lepton sector by means of high-luminosity lepton-photon and electron-muon collisions, by inverting initial and final states in a variety of decay channels presently used to bound such violations. In particular, we analyze the resonant lepton, γℓ→ℓ′, and neutral-meson, e−μ+→ϕ,η,π0, scattering channels, whose cross sections are critically dependent on the colliding-beams energy spread, being particularly demanding in the case of leptonic processes. For these processes, we compute upper bounds to the cross-section corresponding to present limits on the inverse decay channel rates. In order to circumvent the beam energy spread limitations we extend the analysis to processes in which a photon accompanies the resonance in the final state, compensating the off-shellness effects by radiative return. These processes might be studied at future facilities with moderate energies, in case lepton-photon and electron-muon collisions with sufficiently high luminosity will be available

Trattamento endovascolare degli aneurismi dell’aorta addominale, controllo ultrasonografico e TC a breve e medio termine, valutazione dei risultati e trattamento delle complicanze

Introduction: To date the contrast-enhanced CT scan is the recommended postoperative surveillance after endovascular aneurysm repair (EVAR). The radiation exposure and progressive renal function deleterious and cost improvement associated with this surveillance regimen represents the major problematic. We evaluated the safety and efficacy of new post-EVAR surveillance regimens. Methods: From January 2007 to February 2010, 176 patients with abdominal aortic aneurysm (AAA) were enrolled to a prospective study to receive EVAR e subsequently a new post-EVAR surveillance regimens. An aneurysm-related morbidity (ARM) variable was calculated to include open conversion, any secondary intervention, limb thrombosis and migration, aneurysm rupture, renal morbidity and aneurysm-related death. The long-term freedom from ARM as a function of the presence or absence of any endoleak at 3, 15, and 21 months was analyzed. The instructions for use for aortic neck anatomy (>10 mm length, <32 mm diameter, <80° angulation) were followed. Chi-Square tests for ARM data and time to event provided two-sided p values with a level of significance at 0.05 and all confidence interval (C.I.) at the 95% level. Survival curves for primary patency were plotted using Kaplan-Meier method. Results: EVAR was done in 176 patients (mean follow-up, 25 +/- 19 months). Freedom from endoleak at 3 month was highly predictive (p < 0.0001) of reduced ARM and of reduced reinterventio (p 0.0002). Cumulative absence of endoleak at 15 year was associated with absence of reintervention. Eighteen patients required an additional intervention. The overall ARM that required reoperation was 14,3% (14 endoleak, 4 limb thrombosis, 2 femoral pseudoaneurysm, 1 surgical conversion). Six cases of renal failure with need of dialysis occurred. Conclusions: Absence of endoleak at 3 months predicted greatly improved long-term freedom from ARM compared with early endoleak. A new EVAR surveillance regimen is recommended that modulates the intensity and frequency of postoperative imaging based on these early outcomes. In patients without early endoleak, the 3-15 months CT-scan surveillance is safe and efficacy, and 9-18 months ultrasound should be interposed for long-term surveillance >2 years. This reduced surveillance regimen seems to be appropriate and improve the patient safety. Also it reduces the cumulative contrast deleterious effects, radiation exposure and health care costs. Further studies are needed to validate the results

Virtual museum enriched by GIS data to share science and culture. Church of Saint Stephen in Umm Ar-Rasas (Jordan)

[EN] Umm ar-Rasas is a Jordan archaeological site, located 30 km southeast of the city of Madaba, in the northern part of Wadi Mujib. It preserves findings dating back the period from the end of 3rd to the 9th century AD and, since 2004, it belongs to the world heritage list of UNESCO. In 2015 a multidisciplinary work was undertaken over the archaeological site, mainly focusing on the Church of Saint Stephen, with the main purpose of enhancing the knowledge and documenting the conservation state of the polychrome mosaic floor, which covers the entire surface of the hall and presbytery. A huge amount of data has been collected, coming from archaeological and historical investigations, geophysics and geodetic inspections and geomatics surveying, which produced also a true orthophoto of the mosaic floor. Data has been organized in a geo-database, facilitating the exchange of information between different actors. Moreover, the management of data within a dedicated Geographic Information System (GIS), has allowed in-depth analysis for understanding the evolution of the iconographic repertoire that, over the centuries, has undergone several disfigurements due to the iconoclastic age. The knowledge of the mosaic has also been vital for the implementation of multimedia applications and for the creation of virtual experiences, in which the information can be conveyed and visualized directly on the virtual reconstruction of the whole archaeological site. The innovation of the proposed work, is therefore in the management of a data flow that can be exploited by different actors through different platforms: experts, thanks to the use of GIS, and visitors with the use of multimedia applications (such as Augmented Reality (AR) or highresolution web visualization) for dissemination purposes, in order to preserve this priceless mankind heritage.Highlights:Definition of a complete pipeline ranging from data acquisition to visualization in multi-channel multimedia applications.Management of heterogeneous data in Geographic Information Systems (GIS) and their exploitation in Augmented and Virtual Reality (AR/VR).GIS applied to the archaeological domain for expert and non-expert users.[ES] Umm er-Rasas es un sitio arqueológico de Jordania, ubicado a 30 km al sureste de la ciudad de Madaba, en la parte norte de Wadi Mujib. Conserva hallazgos que datan del período comprendido entre finales del siglo III y IX d.C. y, desde 2004, pertenece a la lista del patrimonio mundial de la UNESCO. En 2015, se realizó un trabajo multidisciplinar en el sitio arqueológico, que se centró principalmente en la Iglesia de San Esteban, con el propósito principal de mejorar el conocimiento y la documentación del estado de conservación del suelo con el mosaico policromado que cubre toda la superficie de la sala y el presbiterio. Se ha recopilado una gran cantidad de datos provenientes de investigaciones arqueológicas e históricas, inspecciones geofísicas y geodésicas y levantamientos geomáticos, que produjeron también una ortofoto verdadera del suelo con el mosaico. Los datos se han organizado en una geodatabase, facilitando el intercambio de información entre diferentes actores. Además, la gestión de los datos en un Sistema de Información Geográfica (SIG) dedicado, ha permitido un análisis profundo que facilita la comprensión de la evolución del repertorio iconográfico que, a lo largo de los siglos, ha sufrido varias desfiguraciones debido a la era iconoclasta. El conocimiento del mosaico también ha sido vital en la implementación de aplicaciones multimedia y en la creación de experiencias virtuales, en las que la información se puede transmitir y visualizar directamente en la reconstrucción virtual de todo el sitio arqueológico. La innovación del trabajo propuesto está, por lo tanto, en la gestión del flujo de datos que puede ser explotado por diferentes actores a través de diferentes plataformas: expertos, gracias al uso del SIG, y visitantes con el uso de las aplicaciones multimedia (como son la Realidad Aumentada (AR) o la visualización web de alta resolución) para fines de divulgación, con el fin de preservar este patrimonio incalculable de la humanidad.Malinverni, ES.; Pierdiccaa, R.; Di Stefano, F.; Gabrielli, R.; Albiero, A. (2019). Museo virtual enriquecido con datos GIS para compartir ciencia y cultura. La Iglesia de San Esteban en Umm er-Rasas (Jordania). Virtual Archaeology Review. 10(21):31-39. https://doi.org/10.4995/var.2019.11919SWORD31391021Anichini, F., Bini, D., Bini, M., Dubbini, N., Fabiani, F., Gattiglia, G., ... Steffè, S. (2012). MAPPAproject: Methodologies applied to archaeological potential predictivity. MapPapers, 1en-I, 23-43.Anichini, F., Fabiani, F., Gattiglia, G., & Gualandi, M. L. (2012). A database for archaeological data recording and analysis. MapPapers, 1en-II, 21-38.Baik, A., Yaagoubi, R., & Boehm, J. (2015). Integration of Jeddah historical BIM and 3D GIS for documentation and restoration of historical monument. International Society for Photogrammetry and Remote Sensing, XL-5/W7, 29-34. https://doi.org/10.5194/isprsarchives-XL-5-W7-29-2015Barrile, V., Fotia, A., Bilotta, G., & De Carlo, D. (2019). Integration of geomatics methodologies and creation of a cultural heritage app using augmented reality. Virtual Archaeology Review, 10(20), 40-51. https://doi.org/10.4995/var.2019.10361Blanco-Pons, S., Carrión-Ruiz, B., Lerma, J. L., & Villaverde, V. (2019). Design and implementation of an augmented reality application for rock art visualization in Cova dels Cavalls (Spain). Journal of Cultural Heritage. https://doi.org/10.1016/j.culher.2019.03.014Bruno, F., Bruno, S., De Sensi, G., Luchi, M. L., Mancuso, S., & Muzzupappa, M. (2010). From 3D reconstruction to virtual reality: A complete methodology for digital archaeological exhibition. Journal of Cultural Heritage, 11(1), 42-49. https://doi.org/10.1016/j.culher.2009.02.006Colosi, F., Fangi, G., Gabrielli, R., Orazi, R., Angelini, A., & Bozzi, C. A. (2009). Planning the Archaeological Park of Chan Chan (Peru) by means of satellite images, GIS and photogrammetry. Journal of Cultural Heritage, 10 (SUPPL. 1), 27-34. https://doi.org/10.1016/j.culher.2009.08.002d'Annibale, E., Tassetti, A. N., & Malinverni, E. S. (2014). Finalizing a low-cost photogrammetric workflow: from panoramic photos to Heritage 3D documentation and visualization. International Journal of Heritage in the Digital Era, 3(1), 33-49. https://doi.org/10.1260/2047-4970.3.1.33Dilek, A. P. S. E., Doğan, M., & Kozbe, G. (2019). The Influences of the Interactive Systems on Museum Visitors' Experience: A Comparative Study from Turkey. Journal of Tourism Intelligence and Smartness, 2(1), 27-38. Retrieved from http://dergipark.org.tr/jtis/issue/44975/559246Felicetti, A., Albiero, A., Gabrielli, R., Pierdicca, R., Paolanti, M., Zingaretti, P.,& Malinverni, E. S. (2018). Automatic Mosaic Digitalization: a Deep Learning approach to tessera segmentation. In METROARCHEO, IEEE International Conference on Metrology for Archaeology and Cultural Heritage. Cassino.Gabrielli, R., Portarena, D., & Franceschinis, M. (2017). Tecniche di documentazione dei tappeti musivi del sito archeologico di Umm Al-Rasas-Kastron Mefaa (Giordania). Archeologia e Calcolatori, 28(1), 201-218.Gabrielli, R., & Greco, G. (2018). Umm Ar-Rasas: The Application of Integrated Methodologies for the Valorization of a Unesco Site. Global Journal of Archaeology & Anthropology, 6(3), 555688. https://doi.org/10.19080/GJAA.2018.06.555688Han, D.-I. D., Weber, J., Bastiaansen, M., Mitas, O., & Lub, X. (2019). Virtual and augmented reality technologies to enhance the visitor experience in cultural tourism. In M. C. tom Dieck & T. Jung (Eds.), Augmented Reality and Virtual Reality (pp. 113-128). Cham: Springer. https://doi.org/10.1007/978-3-030-06246-0Hunter, J., Jateff, E., & van den Hengel, A. (2019). Using digital visualization of archival sources to enhance archaeological interpretation of the 'Life History'of Ships: The case study of HMCS/HMAS Protector. In J. McCarthy, J. Benjamin, T. Winton, & W. van Duivenvoorde (Eds.), 3D Recording and Interpretation for Maritime Archaeology (vol. 31, pp. 89-101). Cham: Springer. https://doi.org/10.1007/978-3-030-03635-5_6Kyriakou, P., & Hermon, S. (2019). Can I touch this? Using natural interaction in a Museum Augmented Reality System. Digital Applications in Archaeology and Cultural Heritage, 12. https://doi.org/10.1016/j.daach.2018.e00088Malinverni, E. S., Pierdicca, R., Giuliano, A., & Mariano, F. (2018). A geographical information system to support restoration activities: a methodological approach experienced upon the case study of Ascoli Satriano Fortress. Applied Geomatics, 10(4), 427-439. https://doi.org/10.1007/s12518-018-0216-4Ognibene, S. (2002). Umm al-Rasas. L'Erma di Bretschneider.Piccirillo, M. (1991). Il complesso di Santo Stefano a Umm al-Rasas Kastron Mefaa in Giordania (1986-1991). Liber Annuus Studii Biblici Franciscani, 41, 327-357.Piccirillo, M. (2008). La Palestina cristiana: I-VII secolo. EDB.Piccirillo, M., & Alliata, E. (1994). Umm al-Rasas Mayfa'ah I: gli scavi del complesso di Santo Stefano.Pierdicca, R., Frontoni, E., Malinverni, E. S., Colosi, F., & Orazi, R. (2016). Virtual reconstruction of archaeological heritage using a combination of photogrammetric techniques: Huaca Arco Iris, Chan Chan, Peru. Digital Applications in Archaeology and Cultural Heritage, 3(3), 80-90. https://doi.org/10.1016/j.daach.2016.06.002Pierdicca, R., Malinverni, E. S., Frontoni, E., Colosi, F., & Orazi, R. (2016). 3D visualization tools to explore ancient architectures in South America. Virtual Archaeology Review, 7(15), 44-53. https://doi.org/10.4995/var.2016.5904Rahaman, H., Champion, E., & Bekele, M. (2019). From photo to 3D to mixed reality: A complete workflow for cultural heritage visualisation and experience. Digital Applications in Archaeology and Cultural Heritage, 13. https://doi.org/10.1016/j.daach.2019.e00102Salonia, P., & Negri, A. (2003). Cultural Heritage emergency: GIS-based tools for assessing and deciding preservation. In Proceedings of the Twenty-Third Annual ESRI International User Conference, San Diego, CA, USA (pp. 7-11).Saygi, G., & Remondino, F. (2013). Management of architectural heritage information in BIM and GIS: State-of-the-art and future perspectives. Internationa

Management of Symptomatic Venous Aneurysm

Venous aneurysms (VAs) have been described in quite of all the major veins. They represent uncommon events but often life-threatening because of pulmonary or paradoxical embolism. We describe our twelve patients' series with acute pulmonary emboli due to venous aneurysm thrombosis. Our experience underlines the importance of a multilevel case-by-case approach and the immediate venous lower limbs duplex scan evaluation in pulmonary embolism events. Our data confirm that anticoagulant alone is not effective in preventing pulmonary embolism. We believe that all the VAs of the deep venous system of the extremities should be treated with surgery as well as symptomatic superficial venous aneurysm. A simple excision can significantly improve symptoms and prevent pulmonary embolism

A new one-pot synthesis of quinoline-2-carboxylates under heterogeneous conditions

Quinoline-2-carboxylates are an important subclass of quinoline derivatives largely present in a variety of biologically active molecules, as well as useful ligands in metal-catalyzed reactions. Herein, we present a new one-pot protocol for synthesizing this class of derivatives starting from beta-nitroacrylates and 2-aminobenzaldehydes. In order to optimize the protocol, we investigated several reaction conditions, obtaining the best results using the 2-tert-butylimino-2-diethylamino- 1,3-dimethylperhydro-1,3,2-diazaphosphorine (BEMP) as solid base, in acetonitrile. Finally, we demonstrated the generality of our approach over several substrates which led to synthesize a plethora of functionalized quinolines-2-carboxylate derivatives in good overall yields

A Combination of GPR Survey and Laboratory Rock Tests for Evaluating an Ornamental Stone Deposit in a Quarry Bench

Abstract The paper examines methods of assessing the critical fractures and quality of an ornamental stone deposit. Fracture status was evaluated by an in-situ Ground Penetrating Radar (GPR) test. The resulting 3D GPR model allowed exploration of the extension, shape, and orientation of the detected fractures surfaces. It also identified a rock stratum with a noticeably lower load of critical fractures compared to the other strata. Physico-mechanical properties were investigated by laboratory tests allowing classification of the deposit into quality categories, which provided a promising correlation with the GPR survey results