IS IT A BUSINESS FEEDING ON EMOTIONS OR AN ACT OF ALTRUISM? THE CASE OF FINANCING FOOTBALL IN POLAND

The main goal of this article is to verify the hypothesis on the behavioural character of the relationships between enterprises financing football in Poland and the fans of this sport. In his research, the author analyses selected companies listed on the Warsaw Stock Exchange which are engaged in financing football in the Polish Ekstraklasa. The author uses the quotations of such companies as: Ruch Chorzow, Comarch, KGHM, Tauron, Lotos and Police. It is possible to divide these companies into three groups: owners (Comarch, KGHM), sponsors (Tauron, Lotos, Police) and one public company (Ruch). In the research, ARCH models are used based on econometric models with independent variables: sporting results and betting odds

Wykorzystanie teorii cyklu życia produktu do szacowania wartości kart zawodniczych wybranych polskich piłkarzy

The economists’ recognition that sport is a commercial field of business caused the necessity of treating main elements of a sport event as the commercial product. The football match as an event became a place of trading of entertainment services, which are the better the more brands (famous footballers) participate in these events. Thus spectators are not the clubs fans but they are clients buying a service, in eyes of economists. The Sloane’s approach to football treating football clubs as enterprises and professional football as the industry is adjusted to the proposition of using the product life cycle theory in the analysis of changes in football players’ performance rights.The main goal of an article is to prove that theory of product life cycle could be successfully used in analysis and diagnosis of the market value of footballers. Therefore, there is the hypothesis raised – the compilation of different analytical functions helps in diagnosis of the life cycle of the professional football player. The data of market values of chosen Polish national team players are taken from the web page www.transfermarkt.de.Uznanie przez ekonomistów sportu jako obszaru komercyjnego zainteresowania spowodowało konieczność traktowania głównych elementów wydarzenia sportowego w charakterze produktów komercyjnych. Wydarzenie w postaci meczu stało się miejscem sprzedaży usługi rozrywkowej, która jest tym lepsza, im lepsze (bardziej markowe) produkty (zawodnicy) biorą w niej udział. Tym samym kibice, w oczach ekonomistów, przestają być sympatykami drużyn, a stają się klientami kupującymi usługę. Podejście do piłki nożnej zaproponowane przez Sloane’a, które wprost traktuje kluby piłkarskie jako przedsiębiorstwa, a profesjonalny football jako przemysł, wpisuje się w propozycję wykorzystania teorii cyklu życia produktu w analizowaniu kształtowania się wartości praw do zawodników.Głównym celem pracy jest wykazanie, że teoria cyklu życia produktu może być z powodzeniem wykorzystywana do analizy i diagnozowania wartości rynkowej piłkarzy. W związku z tym zaproponowano hipotezę głoszącą, że złożenie różnych postaci analitycznych funkcji matematycznych pomaga w diagnozowaniu cyklu życia profesjonalnego zawodnika piłki nożnej. W tym celu wykorzystano dane dotyczące wartości rynkowej kart zawodniczych wybranych reprezentantów Polski w piłce nożnej pochodzące z serwisu www.transfermarkt.de

Surgical treatment of rectal cancer in Poland — a report from a prospective, multi-centre observational study PSSO_01 conducted under the auspices of the Polish Society of Surgical Oncology

Introduction. Since 2016, as part of the PSSO_01 multi-centre research project conducted under the auspices of the Polish Society of Surgical Oncology, clinical data on rectal cancer treatment have been collected. The objective of the study was to illustrate the state of early results of surgical treatment. Material and methods. The research project is multi-centre in nature. Data shall be collected electronically. The study protocol does not impose or suggest any course of procedure. It only systematizes the way data are collected for scientific purposes. The analysis of early results of surgical treatment was compared with the results of population studies from other European countries (Netherlands, Belgium). Results. By the end of June 2018, 736 patients were registered in the study. In 399 (54.2%) an anterior resection was performed. More than half of patients undergoing subsequent surgical treatment (54.2%) receive neoadjuvant treatment, with the percentage of patients undergoing radiotherapy or radiochemical treatment for lower rectal cancer being about 70%. Most patients (96%) are operated in elective procedure. The percentage of laparoscopic surgeries is low (8.6%). Postoperative complications are observed in 21.1% of patients. Severe complications (grades III–V according to Clavien-Dindo classification) occur in 7.6% of patients undergoing surgery. Postoperative mortality is 1.1%. Discussion. Although the project does not have the character of a registry and does not allow for drawing wider conclusions concerning the compliance with the standards of qualification for neoadjuvant treatment, the important information is that more than half of rectal cancer patients receive preoperative treatment, and the percentage of severe postoperative complications does not exceed 10%. Conclusions. The results of the PSSO_01 project are representative and reflect the actual situation concerning surgical treatment of rectal cancer patients in Poland

Leczenie chirurgiczne raka odbytnicy w Polsce — raport z prospektywnego, wieloośrodkowego badania obserwacyjnego PSSO_01 prowadzonego pod auspicjami Polskiego Towarzystwa Chirurgii Onkologicznej

Wstęp. Od 2016 roku w ramach wieloośrodkowego projektu badawczego PSSO_01 prowadzonego pod auspicjami Polskiego Towarzystwa Chirurgii Onkologicznej, gromadzone są dane kliniczne dotyczące leczenia raka odbytnicy. Celem pracy było zobrazowanie stanu dotyczącego wczesnych wyników leczenia chirurgicznego. Materiał i metody. Projekt badawczy ma charakter wieloośrodkowy. Dane gromadzone są elektronicznie. Protokół badania nie narzuca ani nie sugeruje żadnego sposobu postępowania, systematyzuje jedynie sposób zbierania danych w celach naukowych. Analiza dotycząca wczesnych wyników leczenia chirurgicznego została porównana z rezultatami populacyjnych badań z innych krajów europejskich (Holandia, Belgia). Wyniki. Do końca czerwca 2018 roku w badaniu zarejestrowano 736 chorych. U 399 (54,2%) wykonano resekcję przednią. Leczenie neoadiuwantowe otrzymała ponad połowa chorych, poddanych następnie leczeniu operacyjne­mu (54,2%), przy czym odsetek pacjentów poddanych radio- bądź radiochemioterapii z powodu raka dolnej części odbytnicy wyniósł około 70%. Większość chorych (96%) operowana była w trybie planowym. Odsetek operacji wykonanych techniką laparoskopową jest niski (8,6%). Powikłania pooperacyjne zaobserwowano u 21,1% chorych. Ciężkie powikłania (III–V st. wg klasyfikacji Claviena-Dindo) sięgały 7,6% operowanych chorych. Śmiertelność po­operacyjna wyniosła 1,1%. Dyskusja. Chociaż projekt nie ma charakteru rejestru i nie pozwala na wyciągniecie szerszych wniosków dotyczących przestrzegania standardów kwalifikacji do leczenia neoadiuwantowego, istotną informacją jest to, że ponad połowa chorych na raka odbytnicy otrzymuje leczenie przedoperacyjne, a odsetek ciężkich powikłań pooperacyjnych nie przekracza 10%. Wnioski. Wyniki projektu PSSO_01 są reprezentatywne i odzwierciedlają faktyczną sytuację dotyczącą leczenia chirurgicznego chorych na raka odbytnicy w Polsce

Search for dark matter produced in association with bottom or top quarks in √s = 13 TeV pp collisions with the ATLAS detector

A search for weakly interacting massive particle dark matter produced in association with bottom or top quarks is presented. Final states containing third-generation quarks and miss- ing transverse momentum are considered. The analysis uses 36.1 fb−1 of proton–proton collision data recorded by the ATLAS experiment at √s = 13 TeV in 2015 and 2016. No significant excess of events above the estimated backgrounds is observed. The results are in- terpreted in the framework of simplified models of spin-0 dark-matter mediators. For colour- neutral spin-0 mediators produced in association with top quarks and decaying into a pair of dark-matter particles, mediator masses below 50 GeV are excluded assuming a dark-matter candidate mass of 1 GeV and unitary couplings. For scalar and pseudoscalar mediators produced in association with bottom quarks, the search sets limits on the production cross- section of 300 times the predicted rate for mediators with masses between 10 and 50 GeV and assuming a dark-matter mass of 1 GeV and unitary coupling. Constraints on colour- charged scalar simplified models are also presented. Assuming a dark-matter particle mass of 35 GeV, mediator particles with mass below 1.1 TeV are excluded for couplings yielding a dark-matter relic density consistent with measurements

Study of the B−→Λc+Λˉc−K−B^{-} \to \Lambda_{c}^{+} \bar{\Lambda}_{c}^{-} K^{-} decay

The decay $B^{-} \to \Lambda_{c}^{+} \bar{\Lambda}_{c}^{-} K^{-}$ is studied in proton-proton collisions at a center-of-mass energy of $\sqrt{s}=13$ TeV using data corresponding to an integrated luminosity of 5 $\mathrm{fb}^{-1}$ collected by the LHCb experiment. In the $\Lambda_{c}^+ K^{-}$ system, the $\Xi_{c}(2930)^{0}$ state observed at the BaBar and Belle experiments is resolved into two narrower states, $\Xi_{c}(2923)^{0}$ and $\Xi_{c}(2939)^{0}$, whose masses and widths are measured to be $$m(\Xi_{c}(2923)^{0}) = 2924.5 \pm 0.4 \pm 1.1 \,\mathrm{MeV}, \\ m(\Xi_{c}(2939)^{0}) = 2938.5 \pm 0.9 \pm 2.3 \,\mathrm{MeV}, \\ \Gamma(\Xi_{c}(2923)^{0}) = \phantom{000}4.8 \pm 0.9 \pm 1.5 \,\mathrm{MeV},\\ \Gamma(\Xi_{c}(2939)^{0}) = \phantom{00}11.0 \pm 1.9 \pm 7.5 \,\mathrm{MeV},$$ where the first uncertainties are statistical and the second systematic. The results are consistent with a previous LHCb measurement using a prompt $\Lambda_{c}^{+} K^{-}$ sample. Evidence of a new $\Xi_{c}(2880)^{0}$ state is found with a local significance of $3.8\,\sigma$, whose mass and width are measured to be $2881.8 \pm 3.1 \pm 8.5\,\mathrm{MeV}$ and $12.4 \pm 5.3 \pm 5.8 \,\mathrm{MeV}$, respectively. In addition, evidence of a new decay mode $\Xi_{c}(2790)^{0} \to \Lambda_{c}^{+} K^{-}$ is found with a significance of $3.7\,\sigma$. The relative branching fraction of $B^{-} \to \Lambda_{c}^{+} \bar{\Lambda}_{c}^{-} K^{-}$ with respect to the $B^{-} \to D^{+} D^{-} K^{-}$ decay is measured to be $2.36 \pm 0.11 \pm 0.22 \pm 0.25$, where the first uncertainty is statistical, the second systematic and the third originates from the branching fractions of charm hadron decays.Comment: All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-028.html (LHCb public pages

Measurement of the ratios of branching fractions R(D∗)\mathcal{R}(D^{*}) and R(D0)\mathcal{R}(D^{0})

The ratios of branching fractions $\mathcal{R}(D^{*})\equiv\mathcal{B}(\bar{B}\to D^{*}\tau^{-}\bar{\nu}_{\tau})/\mathcal{B}(\bar{B}\to D^{*}\mu^{-}\bar{\nu}_{\mu})$ and $\mathcal{R}(D^{0})\equiv\mathcal{B}(B^{-}\to D^{0}\tau^{-}\bar{\nu}_{\tau})/\mathcal{B}(B^{-}\to D^{0}\mu^{-}\bar{\nu}_{\mu})$ are measured, assuming isospin symmetry, using a sample of proton-proton collision data corresponding to 3.0 fb${ }^{-1}$ of integrated luminosity recorded by the LHCb experiment during 2011 and 2012. The tau lepton is identified in the decay mode $\tau^{-}\to\mu^{-}\nu_{\tau}\bar{\nu}_{\mu}$. The measured values are $\mathcal{R}(D^{*})=0.281\pm0.018\pm0.024$ and $\mathcal{R}(D^{0})=0.441\pm0.060\pm0.066$, where the first uncertainty is statistical and the second is systematic. The correlation between these measurements is $\rho=-0.43$. Results are consistent with the current average of these quantities and are at a combined 1.9 standard deviations from the predictions based on lepton flavor universality in the Standard Model.Comment: All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-039.html (LHCb public pages

Multidifferential study of identified charged hadron distributions in ZZ-tagged jets in proton-proton collisions at s=\sqrt{s}=13 TeV

Jet fragmentation functions are measured for the first time in proton-proton collisions for charged pions, kaons, and protons within jets recoiling against a $Z$ boson. The charged-hadron distributions are studied longitudinally and transversely to the jet direction for jets with transverse momentum 20 $< p_{\textrm{T}} < 100$ GeV and in the pseudorapidity range $2.5 < \eta < 4$. The data sample was collected with the LHCb experiment at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 1.64 fb$^{-1}$. Triple differential distributions as a function of the hadron longitudinal momentum fraction, hadron transverse momentum, and jet transverse momentum are also measured for the first time. This helps constrain transverse-momentum-dependent fragmentation functions. Differences in the shapes and magnitudes of the measured distributions for the different hadron species provide insights into the hadronization process for jets predominantly initiated by light quarks.Comment: All figures and tables, along with machine-readable versions and any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-013.html (LHCb public pages