Zobrazeno 1 - 10
of 918
pro vyhledávání: '"AT Saiyad"'
Considering radio-interferometric observations, we present a fast and efficient estimator to compute the binned angular bispectrum (ABS) from gridded visibility data. The estimator makes use of Fast Fourier Transform (FFT) techniques to compute the b
Externí odkaz:
http://arxiv.org/abs/2412.02246
Autor:
Ashanujjaman, Saiyad, Banik, Sumit, Coloretti, Guglielmo, Crivellin, Andreas, Maharathy, Siddharth P., Mellado, Bruce
In this article, we examine the Standard Model extended by a $Y=0$ real Higgs triplet, the $\Delta$SM. It contains a $CP$-even neutral Higgs ($\Delta^0$) and two charged Higgs bosons ($\Delta^\pm$), which are quasi-degenerate in mass. We first study
Externí odkaz:
http://arxiv.org/abs/2411.18618
The ubiquity of top-rich final states in the context of beyond the Standard Model (BSM) searches has led to their status as extensively studied signatures at the LHC. Over the past decade, numerous endeavours have been undertaken in the literature to
Externí odkaz:
http://arxiv.org/abs/2409.12085
Autor:
Mishra, Arnab, Murmu, Chandra Shekhar, Datta, Kanan K., Choudhuri, Samir, Majumdar, Suman, Nasreen, Iffat, Ali, Sk. Saiyad
Measuring the properties of the intergalactic medium (IGM) and sources during the Epoch of Reionization (EoR) is of immense importance. We explore the prospects of probing the IGM and sources through redshifted 21-cm observations of individual ionize
Externí odkaz:
http://arxiv.org/abs/2408.01681
Autor:
Crivellin, Andreas, Ashanujjaman, Saiyad, Banik, Sumit, Coloretti, Guglielmo, Maharathy, Siddharth P., Mellado, Bruce
Despite intensive searches at the LHC, no new fundamental particle has been discovered since the discovery of the 125 GeV Higgs boson. In general, a new physics discovery is challenging without a UV-complete model because different channels and obser
Externí odkaz:
http://arxiv.org/abs/2404.14492
Autor:
Elahi, Khandakar Md Asif, Bharadwaj, Somnath, Pal, Srijita, Ghosh, Abhik, Ali, Sk. Saiyad, Choudhuri, Samir, Chakraborty, Arnab, Datta, Abhirup, Roy, Nirupam, Choudhury, Madhurima, Dutta, Prasun
We present a Wideband Tapered Gridded Estimator (TGE), which incorporates baseline migration and variation of the primary beam pattern for neutral hydrogen (${\rm H\hspace{0.5mm}}{\scriptsize {\rm I}}$) 21-cm intensity mapping (IM) with large frequen
Externí odkaz:
http://arxiv.org/abs/2403.06736
Autor:
Ashanujjaman, Saiyad, Banik, Sumit, Coloretti, Guglielmo, Crivellin, Andreas, Maharathy, Siddharth P., Mellado, Bruce
The multi-lepton anomalies and searches for the associated production of a narrow resonance indicate the existence of a $\approx$151 GeV Higgs with a significance of $>5\sigma$ and $>3.9\sigma$, respectively. On the one hand, these anomalies require
Externí odkaz:
http://arxiv.org/abs/2402.00101
Autor:
Elahi, Khandakar Md Asif, Bharadwaj, Somnath, Pal, Srijita, Ghosh, Abhik, Ali, Sk. Saiyad, Choudhuri, Samir, Chakraborty, Arnab, Datta, Abhirup, Roy, Nirupam, Choudhury, Madhurima, Dutta, Prasun
Publikováno v:
MNRAS, Volume 525, Issue 3, November 2023, Pages 3439-3454
Neutral hydrogen (HI) $21$-cm intensity mapping (IM) is a promising probe of the large-scale structures in the Universe. However, a few orders of magnitude brighter foregrounds obscure the IM signal. Here we use the Tapered Gridded Estimator (TGE) to
Externí odkaz:
http://arxiv.org/abs/2308.08284
Autor:
Ashanujjaman, Saiyad, Banik, Sumit, Coloretti, Guglielmo, Crivellin, Andreas, Mellado, Bruce, Mulaudzi, Anza-Tshilidzi
We explore the possibility that an $SU(2)_L$ triplet scalar with hypercharge $Y=0$ is the origin of the $95\,$GeV diphoton excess. For a small mixing angle with the Standard Model Higgs, its neutral component has naturally a sizable branching ratio t
Externí odkaz:
http://arxiv.org/abs/2306.15722
Despite a great deal of effort in searching for the triplet-like Higgses in the type-II seesaw model, evidence for their production is yet to be found at the LHC. As such, one might be in the balance regarding this model's relevance at the electrowea
Externí odkaz:
http://arxiv.org/abs/2305.06889