https://doi.org/10.1140/epjs/s11734-025-01889-1
Regular Article
InDEx run-1 result with improved method of data analysis
1
HENPP, Saha Institute of Nuclear Physics, 1/AF, Bidhannagar, 700064, Kolkata, West Bengal, India
2
Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, 400094, Mumbai, Maharashtra, India
3
Department of Physics, Muralidhar Girls’ College, P-411/14 Gariahat Road, Ballygunge, 700029, Kolkata, West Bengal, India
a
This email address is being protected from spambots. You need JavaScript enabled to view it.
Received:
25
June
2025
Accepted:
24
August
2025
Published online:
8
September
2025
Abstract
The run-1 of the Indian Dark matter search Experiment (InDEx) was commissioned at Jaduguda Underground Science Laboratory (JUSL) for 48.6 days at a threshold of 5.87 keV. A new study on signal parameters to improve the data selection process has been conducted in this article to distinguish the bubble-nucleated events from the noise events. From the selected measured data, the upper limit on WIMP-nucleon spin-independent cross-section is set at 31.5 GeV/c
with a cross-section of (
cm. The lowest WIMP mass sensitivity of C
HF
at this threshold is estimated to be 4.5 GeV/c.
© The Author(s) 2025
Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
