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المؤلفون: Alice Colpani Serri, Yu Feng, Carlo Flore, Jean-Philippe Lansberg, Melih A. Ozcelik, Hua-Sheng Shao, Yelyzaveta Yedelkina

المصدر: Physics Letters B, Vol 835, Iss , Pp 137556- (2022)

مصطلحات موضوعية: Quarkonia, Photoproduction, HERA, EIC, LHeC, FCC-eh, Physics, QC1-999

الوصف: We revisit inclusive J/ψ and ϒ photoproduction at lepton-hadron colliders, namely in the limit when the exchanged photon is quasi real. Our computation includes the next-to-leading-order (NLO) αs corrections to the leading-order contributions in v. Similarly to the case of NLO charmonium-hadroproduction processes, the resulting cross sections obtained in the MS‾ factorisation scheme are sometimes found to be negative. We show that the scale-fixing criterion which we derived in a previous study of ηc production successfully solves this problem from the EicC all the way up to the FCC-eh energies. We then elaborate on how to study a scale uncertainty akin to that derived by scale variations when one fixes a scale. In turn, we investigate where both J/ψ and ϒ photoproduction could be used to improve our knowledge of gluon content of the proton at scales as low as a couple of GeV.

وصف الملف: electronic resource

Relation: http://www.sciencedirect.com/science/article/pii/S0370269322006906; https://doaj.org/toc/0370-2693

URL الوصول: https://doaj.org/article/c92d0d7fe12646ca9eec96375eb5233d

المؤلفون: Adil Jueid, Jinheung Kim, Soojin Lee, Jeonghyeon Song

المصدر: Physics Letters B, Vol 819, Iss , Pp 136417- (2021)

مصطلحات موضوعية: HHVV coupling, Trilinear Higgs self-coupling, LHeC, FCC-he, Physics, QC1-999

الوصف: The measurement of the Higgs quartic coupling modifier between a Higgs boson pair and a vector boson pair, κ2V, is expected to be achieved from vector-boson fusion (VBF) production of a Higgs boson pair. However, this process involves another unmeasured parameter, the trilinear Higgs self-coupling modifier κλ. A sensitivity analysis should target both parameters. Since the LHC cannot avoid the gluon fusion pollution, which becomes severe for non-SM κλ, an electron-proton collider is more appropriate for the comprehensive measurement. In this regard, we study the VBF production of a Higgs boson pair in the bb¯bb¯ final state at the LHeC and FCC-he. Performing detailed analysis using simulated dataset, we devise the search strategy specialized at the LHeC and FCC-he and give a prediction for the sensitivity to both κ2V and κλ. We find that the two electron-proton colliders have high potential: the LHeC has similar exclusion prospects as the HL-LHC; the FCC-he is extremely efficient, excluding the parameter space outside κ2V∈[0.8,1.2] and κλ∈[1,2.5] at 95% C.L. for the total luminosity of 10 ab−1 and 10% uncertainty on the background yields.

وصف الملف: electronic resource

Relation: http://www.sciencedirect.com/science/article/pii/S0370269321003579; https://doaj.org/toc/0370-2693

URL الوصول: https://doaj.org/article/39bb480b7c124889a260bd4d3a52aeb8

المؤلفون: Ümit KAYA, Bora KETENOĞLU, Saleh SULTANSOY

المصدر: Süleyman Demirel Üniversitesi Fen-Edebiyat Fakültesi Fen Dergisi, Vol 13, Iss 2, Pp 173-178 (2018)

مصطلحات موضوعية: ep çarpıştırıcısı, ışınlık, LHeC projesi, elektron-hadron saçılması, Science (General), Q1-390

الوصف: Büyük Hadron elektron Çarpıştırıcısı (LHeC)'in QCD-Explorer aşaması için bir seçenek olarak, Büyük Hadron Çarpıştırıcısı (LHC)'ye teğet olacak şekilde 9 km uzunluğunda yeni bir e-halkası inşası önerilmiştir. 90 MW sinkrotron ışınımı kaybı ile L=1033cm-2s-1ışınlığa ulaşılabileceği gösterilmiştir. ERL60xLHC'nin temel versiyonu ile örtüşen bu ışınlık değeri, LHC için (Parton Dağılım Fonksiyonu) PDF'lerin kesin olarak tayini, QCD temellerinin keşfi, ve özellikle Q2 ≈ 1 GeV2'de 10-6 'ya kadar küçük x Björken bölgesinin belirlenmesinde yeterli olacaktır. Ayrıca, ERL60xLHC'nin temel ve geliştirilmiş versiyonları üzerine bazı öneriler de sunulmuştur. Geliştirilmiş ERL60xLHC’nin L=1034cm-2s-1ışınlıklı versiyonu, 160 MW'ın üzerinde kabul edilemez bir şehir şebeke elektrik gücü gerektirdiği gösterilmiştir.

وصف الملف: electronic resource

Relation: http://dergipark.gov.tr/sdufeffd/issue/40584/468814?publisher=sdu-1; https://doaj.org/toc/1306-7575

URL الوصول: https://doaj.org/article/49b8ded359ce42d7844e5c468d173e9a

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المؤلفون: Tommasini, D., Buzio, M., Chritin, R.

المصدر: IEEE Transactions on Applied Superconductivity IEEE Trans. Appl. Supercond. Applied Superconductivity, IEEE Transactions on. 22(3):4000203-4000203 Jun, 2012

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المؤلفون: V. Ari, M. Köksal, A. A. Billur, E. Gurkanli

المساهمون: Fen Fakültesi

مصطلحات موضوعية: Fluid Flow and Transfer Processes, Semileptonic decay, Physics, Particle physics, Gauge boson, Hadron, High Energy Physics::Phenomenology, General Physics and Astronomy, FOS: Physical sciences, Anomalous couplings, LHeC, Lambda, Standard Model, High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), Production (computer science), High Energy Physics::Experiment, Sensitivity (control systems), Energy (signal processing)

الوصف: The quartic gauge boson couplings that identify the strengths of the gauge boson self-interactions are exactly determined by the non-Abelian gauge nature of the Standard Model. The examination of these couplings at $ep$ collisions with high center-of-mass energy and high integrated luminosity provides an important opportunity to test the validity of the Standard Model and the existence of new physics beyond the Standard Model. The quartic gauge boson couplings can contribute directly to multi-boson production at colliders. Therefore, we examine the potential of the process $ep \rightarrow \nu_{e}W^{+}W^{-} j$ at the Large Hadron Electron Collider and the Future Circular Collider-hadron electron to study non-standard $WWWW$ couplings in a model independent way by means of the effective Lagrangian approach. We present an investigation on measuring $W^{+}W^{-}$ production in pure leptonic and semileptonic decay channels. In addition, we calculate the sensitivity limits at $95\%$ Confidence Level on the anomalous $\frac{f_{M0}}{\Lambda^{4}}$, $\frac{f_{M1}}{\Lambda^{4}}$, $\frac{f_{M7}}{\Lambda^{4}}$, $\frac{f_{S0}}{\Lambda^{4}}$, $\frac{f_{S1}}{\Lambda^{4}}$, $\frac{f_{T0}}{\Lambda^{4}}$, $\frac{f_{T1}}{\Lambda^{4}}$ and $\frac{f_{T2}}{\Lambda^{4}}$ couplings obtained by dimension-8 operators through the process $ep \rightarrow \nu_{e}W^{+}W^{-} j$ for the Large Hadron Electron Collider and the Future Circular Hadron Electron Collider's different center-of-mass energies and integrated luminosities. Our results show that with the process $ep \rightarrow \nu_{e}W^{+}W^{-} j$ at the Large Hadron Electron Collider and the Future Circular Collider-hadron electron the sensitivity estimated on the anomalous $WWWW$ couplings can be importantly strengthened.
Comment: 33 pages, 9 figures and 25 tables

وصف الملف: application/pdf

URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f7916a6c4bcb904cb8ce12a6981f162e
https://hdl.handle.net/20.500.12418/12646

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