10 JUL 2024
11:00 - 12:00

Abstract:

Neutral current Drell-Yan (DY) lepton-pair production is considered in the framework of the Standard Model Effective Field Theory (SMEFT). Using the open-source fit platform xFitter, we investigate the impact of high-statistics measurements of the neutral current DY (NCDY) forward-backward asymmetry AFB near the weak boson mass scale in the present and forthcoming stages of the Large Hadron Collider (LHC). Besides recovering earlier results on the AFB sensitivity to parton distribution functions, we analyze the precision determination of Z-boson couplings to left-handed and right-handed u-quarks and d-quarks, and explore Beyond-Standard-Model contributions using the SMEFT framework. We comment on the role of the AFB asymmetry for the electroweak SMEFT fit and precision Z-boson physics at the LHC and high-luminosity HL-LHC.

Indico Link:
https://indico.hep.ipm.ir/e/h.abdolmaleki2

Meeting Place:
Seminar Room, School of Particles and Accelerators, IPM

Link to Join Virtually:
https://meet.google.com/bda-vsem-tuv

10 JUL 2024
14:00 - 16:00

There are different types of approaches to solve P vs NP, some of them are logical approaches. The lecturer's PhD thesis [11] is based on one of these logical approaches 2002 [2], [6]. Till 2011, he and some other logicians made an unsuccessful aƩempt to shed light on this problem in this way. In 2010‐2011, he started to introduce another logical approach based on paradoxes, more specifically ?Unexpected Hanging Paradox?. The goal is to use paradoxes similar to applying paradoxes (Liar Paradoxes) in the Godel?s Incompleteness Theorem [14], [15], [16]. In [5], [16] (2017), he showed by defining a new version of this paradox, we face a contradiction, not a paradox. To cope with this situation, in 2019 Fuzzy Time [4], [17] (or as some of the speaker?s colleagues used it later on, Temporal Continuum (2023) or Continuity in Time (2024)) came into the centre of the subject and discussion. Nevertheless, we have concepts similar to the fuzziness of Time and space in the history of science, Mathematics, Philosophy and Physics [7], [12], [13]. Based on that, the speaker claimed a new interpretation of Quantum Mechanics, the ?Fuzzy time‐particle? interpretation of Quantum Mechanics [1], [3], [4]. ?Theory of Fuzzy Time Computation?, is introduced in [8], [9], [10], monthly seminars of the Iranian Association of Logic [18], and The 10th annual conference of the Iranian Association for Logic (IAL) (2023) [19]. In 2023, this Theory was introduced in a paper in HAL [9] and now it is in development. In this lecture, after defining this Theory, we explain a part of it in details, and as the main conclusion, we prove TC+CON(TC^* )ͰP≠NP.
Join Zoom Meeting
https://us06web.zoom.us/j/9086116889?pwd=WGRFOGZWZ1FOMXJrcWpJMWFqUFIvQT09&omn=88907944379
Meeting ID: 908 611 6889
Passcode: 362880
Venue: Niavaran, Lecture Hall 2





References.
1. Computing Fuzzy Time Function, F.Didehvar, Philpapers, SSRN 2022
2. B.Poizat, Les petit cailloux. Une approach modele-theorique de l?Algorithmie , Nur al-Mantiq wal-Ma?rifah, no.3.Ale?as, Lyon 1995, 2 pp.
3. Does accepting Fuzzy Time-Particle interpretation of Quantum Mechanics, refutes the other interpretations? (Is fuzziness of time checkable experimentally?), F.Didehvar, Philpapers, SSRN, 2021
4.Fuzzy time a solution for unexpected hanging Paradox ( a Fuzzy interpretation Of Quntum Mechanics)), Philpapers 2019-4-13
5. Is Classical Mathematics appropriate for Theory of Computation? F.Didehvar, Philpapers(Manuscript), 2017,2018,2019, Handbook of the 6th World Congress and School on Universal Logic, Vichy France, 2018
6. L. Blum, M.Shub, S. Smale, ?On a Theory of Computation and Complexity over the real numbers: NP-Comleness, Recursive Functions and Universal Machines, Bull.Amer.Mth.Soc.(N.S.) 21 (1): 1-46 (July 1989).
7. , M. Van Aten, On BrouwerWadsworth Philosopher?s Series, 2004 (PersianTranslation by M. Ardeshir)
8. TC+CON(TC*) deduce P is not equal to NP, F.Didehvar, Philpapers(Manuscript), 2020
9.-Theory of Fuzzy Time Computation (TC^* vs TC &TQC), hal-04330281
10. P ≠ NP, by Accepting to Make a Shift in the Theory (Time as a Fuzzy Concept), F.Didehvar, Philpapers, SSRN, 2021
11. Some Concepts and Problems in Theory of Complexity in Structures, published as ?Generalization of Some Concepts Theory in Structures?, Ph.D Thesis, 2002
12. C.Wetterich, Probabilistic Time, Foundation of Physics, 2012
13. Zeno Paradox, Unexpected Hanging Paradox (Modeling of Reality & Physical Reality, A Historical-Philosophical view), F.Didehvar, Philpapers, (Manuscript)2022 Conferences
14. When proof doesn?t show the Truth, Philosophy Day in Iran (Logic and Philosophical Logic, Tradition and Modern), 2010/11/19, Tehran, Iran.
15. A Semantic Situation without Syntax (Non-axiomatizibility of Theories), Universal Logic 2015, (5th World Congress and school, 2015/6/28, Istanbul University.
16. Is Classical Mathematics Appropriate for Theory of Computation?, Universal Logic 2018, (6th World Congress and school, 2018/6/28, Vichy University Campus.
17. Fuzzy Time, from Paradox to Paradox, The 50th Annual Iranian Mathematics Conferences, Shiraz, Iran, Shiraz University, 26-29 August, 2019, Shiraz University.
18. The impacts of Logic, Paradoxes in on side and Theory of Computation in the other side (Fuzzy Time Computation), (TC*، زمان فازی) تاثیر و تاثر منطق و پارادوکسها بر نظریه محاسبات عام 20 June 2022 (In Persian), https://ialogic.ir/index.php/2022-12-11-17-07--09/lectures/258--2022-06--15--05-07-35 The slides are in Philpapers.
19. About a Proof (TC + CON(TC ∗)Ͱ(P≠NP), The 10th Annual Conference of the Iranian Logic Association, February, 22, 2023-
Venue: Niavaran, Lecture Hall 2

10 JUL 2024
15:30 - 17:00

The problem of counting closed geodesics in Riemannian Manifolds of con- stant negative curvature has been of interest for many years. A method for counting geodesics in manifolds with arbitrary curvature is introduced by Eftekhary. Minimal surfaces in a Riemannian manifold are higher dimensional gener- alizations of closed geodesics. A natural question is how to count these types of submanifolds. We introduce a function which counts minimal tori in a Riemannian manifold (M, g) with dim M > 4. Moreover, we show that this count function is invariant under perturbations of the metric. Looking forward to seeing you organizers
Venue: Niavaran, Lecture Hall 1

9 JUL 2024
09:00 - 16:00

Resting State fMRI: Methods and Applications - Workshop

9 JUL 2024
14:00 - 15:00

Date and time

Tuesday, July 9th, 2024 (Tir 19th, 1403), *2:00 pm* (Tehran zone)


Link

https://www.skyroom.online/ch/schoolofphysics/highenergyseminar


Abstract
We quantify the effects on the evolution of solar neutrinos of light spin-zero particles with pseudoscalar couplings to leptons and scalar couplings to nucleons. In this scenario the matter potential sourced by the nucleons in the Sun's matter gives rise to spin precession of the relativistic neutrino ensemble. As such the effects in the solar observables are different if neutrinos are Dirac or Majorana particles. For Dirac neutrinos the spin-flavour precession results into left-handed neutrino to right-handed neutrino (i.e., active--sterile) oscillations, while for Majorana neutrinos it results into left-handed neutrino to right-handed antineutrino (i.e., active-active) oscillations. In both cases this leads to distortions in the solar neutrino spectrum which we use to derive constraints on the allowed values of the mediator mass and couplings via a global analysis of the solar neutrino data. In addition for Majorana neutrinos spin-flavour precession results into a potentially observable flux of solar electron antineutrinos at the Earth which we quantify and constrain with the existing bounds from Borexino and KamLAND.

8 JUL 2024
11:00 - 12:00

Abstract:

Light-front wavefunction of a hadronic bound state is factorized into transverse and longitudinal modes. In holographic QCD, the transverse mode is the solution of a Schr\"odinger-like equation which is derived based on the AdS$_5$/CFT correspondence. The longitudinal mode, on the other hand, is non-dynamical in holographic QCD. Here, I discuss the shortcomings of this picture and examine the phenomenological consequences of a dynamical longitudinal mode which is obtained from the 't Hooft Equation.

Meeting Place:
Seminar Room, School of Particles and Accelerators, IPM

Link to Join Virtually:
https://meet.google.com/bda-vsem-tuv

7 JUL 2024
14:00 - 18:30

Brain Signal Processing - Webinar