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H→γγ:a comment on the indeterminacy of non-gauge-invariant integrals

Chinese Physics C 2013年第4期37卷 7-13页

作者： F.Piccinini a.pilloni A.D.Polosa INFN Pavia-Via A.Bassi 6 I-27100PaviaItaly Dipartimento di Fisica and INFN 'Sapienza' Università di Roma-P.le A.Moro 2I-00185RomaItaly

We reanalyze the recent computation of the amplitude of the Higgs boson decay into two photons presented by Gastmans et al. [1, 2]. The reasons for why this result cannot be the correct one have been discussed in some recent papers. We address here the general issue of the indeterminacy of integrals with four-dimensional gauge-breaking regulators and to which extent it might eventually be solved by imposing physical constraints. Imposing gauge invariance as the last step upon Rξ-gauge calculations with four-dimensional gauge-breaking regulators, allows us to recover the well known H→γγ result. However we show that in the particular case of the unitary gauge, the indeterminacy cannot be tackled in the same way. The combination of the unitary gauge with a cutoff regularization scheme turns out to be non-predictive.

关键词： Higgs decay regularization methods loop calculations gauge invariance

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Comment on ‘Note on X(3872) production at hadron colliders and its molecular structure’

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Chinese Physics C 2018年第11期42卷 105-106页

作者： A. Esposito B. Grinstein L. Maiani F. Piccinini A. pilloni A.D. Polosa V. Riquer Center for Theoretical Physics and Dept. of Physics Columbia University New York NY 10027 USA Department of Physics University of California San Diego La Jolla California 92093-0315 USA CERN Theory Department Geneva 1211 Switzerland INFN Sezione di Pavia Via A. Bassi 6 27100 Pavia Italy Theory Center Thomas Jefferson National Accelerator Facility Newport News VA 23606 USA Dipartimento di Fisica and INFN Sapienza Universita di Roma P.le Aldo Moro 2 1-00185 Roma Italy

We briefly comment on the paper by Albaladejo et al., Chinese Phys. C 41 121001, rejecting its conclusions.

关键词： X(3872) hadronic molecules exotic hadrons

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Nanophase separation and effects on properties of Ge-As-Se chalcogenide glasses

Nanophase separation and effects on properties of Ge-As-Se c...

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2005年国际玻璃讨论会暨国际玻璃协会年会

作者： S.Baccaro L.pilloni ENEA-FIS/ION Via Anguillarese 301 00060 S.Maria di Galeria （Roma） Italy ENEA-FIS/ION Via Anguillarese 301 00060 S.Maria di Galeria （Roma） Italy

Nanoscale phase separation in the Ge-As-Se chalcogenide glasses was studied by SEM, XRD and IR technique. Its induced effects on Tg, Hv, Eopt and α properties were investigated in terms of glass rigid

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Complete pancreatic heterotopia of gallbladder with hypertrophic duct simulating an adenomyoma

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World Journal of Gastroenterology 2006年第11期12卷 1786-1787页

作者： Luca.pilloni Alessandro Cois Alessandro Uccheddu Rossano Ambu Pierpaolo Coni Gavino Faa Istituto di Anatomia Patologica Dipartimento di Citomorfologia Universita degli Studi di CagliariItaly Semeiotica Chirurgica Dipartimento Chirurgico Materno Infantile e di Scienze delle Immagini Università degli Studi di CagliariItaly Istituto di Anatomia Patologica Dipartimento di Citomorfologia Università degli Studi di CagliariItaly

The gallbladder is an unusual location of pancreatic heterotopia, defined as the presence of pancreatic tissue lacking anatomical and vascular continuity with the main body of the gland. A 28-year-old man presented with anorexia, nausea and pain in the right upper abdomen. On physical examination, the abdomen was tender to palpation and Murphy sign was positive. The patient underwent a cholecystecomy. This case, in our opinion, is very interesting since it permits to consider a controversial issue in the pathology of the gallbladder. The histological appearance of ductal structure in pancreatic heterotopia resembles the histological picture of both Aschoff-Rokitansky （AR） sinuses and adenomyomas. This finding suggests that these lesions are linked by a common histogenetic origin. We suggest that the finding of an adenomyoma in the gallbladder should prompt an extensive sampling of the organ in order to verify the coexistence of pancreatic rests.

关键词： Pancreatic heterotopia Gallbladder Hypertrophic duct Adenomyoma Aschoff-Rokitansky sinuses

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A Mechanism for Hadron Molecule Production in <i>pp</i>(<i>p</i>) Collisions

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Journal of Modern Physics 2013年第12期4卷 1569-1573页

作者： Angelo Esposito Fulvio Piccinini Alessandro pilloni Antonio D. Polosa 1Dipartimento di Fisica Sapienza Università di Roma Roma Italy 2Department of Physics Columbia University New York USA 1Dipartimento di Fisica Sapienza Università di Roma Roma Italy 2INFN Sezione di Roma 1 Roma Italy INFN Sezione di Pavia Pavia Italy

The problem of understanding loosely bound hadron molecules prompt production at hadron colliders is still open: how is it possible that meson molecules with binding energy compatible with zero could be formed within the bulk of the hadrons ejected in very high energy collisions? Monte Carlo simulations have been performed in the literature, leading to production cross sections, two orders of magnitude which were smaller than the experimental value. One possible mechanism to reduce this gap could be final state interactions of heavy mesons, but a precise evaluation of such effect is challenged by the presence of pions between the molecular constituents. In this paper, we present a new mechanism by using precisely such comoving pions. Heavy meson pairs can indeed slow down because of elastic scattering with surrounding pions. The number of low-relative-momentum meson pairs increases, thereby enhancing prompt production cross section. In this preliminar simulation, we show that an enhancement of 100 is indeed possible.

关键词： Exotic Spectroscopy Heavy Quark Phenomenology Hadron Scattering Monte Carlo Simulations

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Evaluation of the Efficacy of 99.9% Pure Silver Trilaminate Cups in the Prevention and Treatment of Nipple Pain and Fissures

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Open Journal of Nursing 2023年第10期13卷 686-698页

作者： Monica.pilloni Pierina Zedda Carla Orrù Elena Fassina Maria Carmela Forte Rossana Mazzulla Brunella Celestino Maria Francesca Marotto Manuela Neri Gian Benedetto Melis Anna Maria Paoletti University Hospital of Cagliari (UHC) Cagliari Italy Department of Surgical Sciences University of Cagliari Cagliari Italy Maternal and Child Family Counselling Quartu Sant’Elena Cagliari Italy Caruso’s Medical Office Cusago Italy Hospital of Castrovillari Cosenza Italy Hospital of Cosenza Cosenza Italy Maternal and Child Family Counselling Argentano Cosenza Italy Company of National Importance and High Specialization (CNIHS) Giovanni Brotzu Cagliari Italy Women’s Wellness Foundation Cagliari Italy

Breastfeeding is drastically decreasing over time and nipple trauma constitutes one of the most significant reasons for its discontinuation. In this context, this study aimed at evaluating the effectiveness and tolerability of a topical treatment device, namely Silver Cap® (Depofarma S.P.A.), when used to prevent pain and nipple fissure formation. The medical device consists in a silver trilaminate cup to be placed on the nipple, providing physical protection and creating a moist environment. The study involved 187 women: 38 started to apply the device prior to lactation (PL group) and 149 during lactation (DL group). Aiming to collect safety and performance data, both groups were provided with questionnaires during 6 consecutive visits (120 days of follow-up). At last visit, absence of painful symptoms was reported by the 98.8% and the 100% of women in DL and PL groups, respectively. Moreover, no nipple fissures were observed and no adverse events directly correlated to use of the device were reported. According to these findings, it can be concluded that Silver Cap® is a safe and effective device for nipple pain and fissure prevention. .

关键词： Silver Cap Breastfeeding Breast Pain Nipple Fissures

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Evaluation of the Efficacy of 99.9% Pure Silver Trilaminate Cups in the Prevention and Treatment of Nipple Pain and Fissures

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Open Journal of Nursing（护理学期刊） 2023年第10期

作者： Monica.pilloni Pierina Zedda CarlaOrrù Elena Fassina Maria Carmela Forte Rossana Mazzulla Brunella Celestino Maria Francesca Marotto Manuela Neri Gian Benedetto Melis9 Anna Maria Paoletti

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