Publications by authors named "C Abellán Beteta"

7 Publications

Angular Analysis of the B^{+}→K^{*+}μ^{+}μ^{-} Decay.

Phys Rev Lett 2021 Apr;126(16):161802

Laboratoire Leprince-ringuet (llr), Palaiseau, France.

We present an angular analysis of the B^{+}→K^{*+}(→K_{S}^{0}π^{+})μ^{+}μ^{-} decay using 9  fb^{-1} of pp collision data collected with the LHCb experiment. For the first time, the full set of CP-averaged angular observables is measured in intervals of the dimuon invariant mass squared. Local deviations from standard model predictions are observed, similar to those in previous LHCb analyses of the isospin-partner B^{0}→K^{*0}μ^{+}μ^{-} decay. The global tension is dependent on which effective couplings are considered and on the choice of theory nuisance parameters.
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http://dx.doi.org/10.1103/PhysRevLett.126.161802DOI Listing
April 2021

Prognostic Value and Therapeutic Implications of Pleural Carcinosis and Malignant Pleural Effusion in Advanced Epithelial Ovarian Cancer.

Anticancer Res 2021 Apr;41(4):2033-2038

Department of Gynecological Oncology and Tumor Surgery, European Competence Center for Ovarian Cancer, Charité Campus Virchow Clinic, Berlin, Germany;

Aim: To demonstrate the prognostic value of pleural carcinosis/effusion in a cohort of patients with advanced epithelial ovarian cancer (EOC) and the associated therapeutic implications.

Patients And Methods: Overall, data for 388 patients with EOC with confirmed malignant pleural effusion (MPE) or pleural carcinosis were retrospectively analyzed. Exclusion criteria were non-epithelial ovarian malignancies and presence of other comorbidities associated with pleural effusions.

Results: The prognosis after the occurrence of MPE during the EOC in relapsed cases was poor with an overall survival of 9.9 months. In the multivariate analysis, the time point of the manifestation of the pleural effusion (p<0.001), platinum sensitivity (p=0.003), performance status (p=0.045) and presence of ascites (p=0.004) were significant prognostic factors for overall survival.

Conclusion: Even in this less favorable collective, well-established EOC prognostic factors were associated with a significantly better overall survival. This suggests that the overall behavioral pattern of the disease has strong similarities in patients with and without pleural effusion or carcinosis and merits an equally high therapeutic effort.
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http://dx.doi.org/10.21873/anticanres.14971DOI Listing
April 2021

Patients' subjective assessment as a decisive predictor of malignancy in pelvic masses: results of a multicentric, prospective pelvic mass study.

J Psychosom Obstet Gynaecol 2020 Nov 30:1-6. Epub 2020 Nov 30.

Department of Gynecology, Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany.

Objective: The prognosis for ovarian cancer patients remains poor. A key to maximizing survival rates is early detection and treatment. This requires an accurate prediction of malignancy. Our study seeks to improve the accuracy of prediction by focusing on early subjective assessment of malignancy. We therefore investigated the assessment of patients themselves in comparison to the assessment of physicians.

Methods: One thousand three hundred and thirty patients participated in a prospective and multicenter study in six hospitals in Berlin. Using univariate analysis and multivariate logistic regression models, we measured the accuracy of the early subjective assessment in comparison to the final histological outcome. Moreover, we investigated factors related to the assessment of patients and physicians.

Results: The patients' assessment of malignancy is remarkably accurate. With a positive predictive value of 58%, the majority of patients correctly assessed a pelvic mass as malignant. With more information available, physicians achieved only a slightly more accurate prediction of 63%.

Conclusions: For the first time, our study considered subjective factors in the diagnostic process of pelvic masses. This paper demonstrates that the patients' personal assessment should be taken seriously as it can provide a significant contribution to earlier diagnosis and thus improved therapy and overall prognosis.
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http://dx.doi.org/10.1080/0167482X.2020.1850684DOI Listing
November 2020

Evidence for an resonance in decays.

Eur Phys J C Part Fields 2018 17;78(12):1019. Epub 2018 Dec 17.

Yandex School of Data Analysis, Moscow, Russia.

A Dalitz plot analysis of decays is performed using data samples of collisions collected with the detector at centre-of-mass energies of and , corresponding to a total integrated luminosity of . A satisfactory description of the data is obtained when including a contribution representing an exotic resonant state. The significance of this exotic resonance is more than three standard deviations, while its mass and width are and , respectively. The spin-parity assignments and are both consistent with the data. In addition, the first measurement of the branching fraction is performed and gives where the first uncertainty is statistical, the second systematic, and the third is due to limited knowledge of external branching fractions.
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http://dx.doi.org/10.1140/epjc/s10052-018-6447-zDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6383874PMC
December 2018

Measurement of the [Formula: see text] production cross-section in proton-proton collisions via the decay [Formula: see text].

Eur Phys J C Part Fields 2015;75(7):311. Epub 2015 Jul 4.

Sezione INFN di Roma La Sapienza, Rome, Italy.

The production of the [Formula: see text] state in proton-proton collisions is probed via its decay to the [Formula: see text] final state with the LHCb detector, in the rapidity range [Formula: see text] and in the meson transverse-momentum range [Formula: see text]. The cross-section for prompt production of [Formula: see text] mesons relative to the prompt [Formula: see text] cross-section is measured, for the first time, to be [Formula: see text] at a centre-of-mass energy [Formula: see text] using data corresponding to an integrated luminosity of 0.7 fb[Formula: see text], and [Formula: see text] at [Formula: see text] using 2.0 fb[Formula: see text]. The uncertainties quoted are, in order, statistical, systematic, and that on the ratio of branching fractions of the [Formula: see text] and [Formula: see text] decays to the [Formula: see text] final state. In addition, the inclusive branching fraction of [Formula: see text]-hadron decays into [Formula: see text] mesons is measured, for the first time, to be [Formula: see text], where the third uncertainty includes also the uncertainty on the [Formula: see text] inclusive branching fraction from [Formula: see text]-hadron decays. The difference between the [Formula: see text] and [Formula: see text] meson masses is determined to be [Formula: see text].
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http://dx.doi.org/10.1140/epjc/s10052-015-3502-xDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4498677PMC
July 2015
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