Searches for CEνNS and Physics beyond the Standard Model using Skipper-CCDs at CONNIE

Fuente: arXiv

Salvato in:

Dettagli Bibliografici
Autori principali:	Aguilar-Arevalo, Alexis A., Avalos, Nicolas, Bertou, Xavier, Bonifazi, Carla, Cancelo, Gustavo, Cervantes-Vergara, Brenda A., Chavez, Claudio, Chierchie, Fernando, Corrêa, Gustavo Coelho, D'Olivo, Juan Carlos, Anjos, João dos, Estrada, Juan, Moroni, Guillermo Fernandez, Neto, Aldo R. Fernandes, Ford, Richard, Kilminster, Ben, Kuk, Kevin, Lathrop, Andrew, Lemos, Patrick, Lima Jr., Herman P., Makler, Martin, Maslova, Katherine, Marinho, Franciole, Molina, Jorge, Nasteva, Irina, Oliveira, Ana Carolina, Paulucci, Laura, Rodrigues, Dario, Sarkis, Y., Sofo-Haro, Miguel, Stalder, Diego, Tiffenberg, Javier, Uemura, Sho, Ventura, Pedro
Natura:	Preprint
Pubblicazione:	2024
Soggetti:	High Energy Physics - Experiment Instrumentation and Detectors
Accesso online:	Acceder al recurso
Tags:	Aggiungi Tag Nessun Tag, puoi essere il primo ad aggiungerne!!

_version_	1866914508172165120
author	Aguilar-Arevalo, Alexis A. Avalos, Nicolas Bertou, Xavier Bonifazi, Carla Cancelo, Gustavo Cervantes-Vergara, Brenda A. Chavez, Claudio Chierchie, Fernando Corrêa, Gustavo Coelho D'Olivo, Juan Carlos Anjos, João dos Estrada, Juan Moroni, Guillermo Fernandez Neto, Aldo R. Fernandes Ford, Richard Kilminster, Ben Kuk, Kevin Lathrop, Andrew Lemos, Patrick Lima Jr., Herman P. Makler, Martin Maslova, Katherine Marinho, Franciole Molina, Jorge Nasteva, Irina Oliveira, Ana Carolina Paulucci, Laura Rodrigues, Dario Sarkis, Y. Sofo-Haro, Miguel Stalder, Diego Tiffenberg, Javier Uemura, Sho Ventura, Pedro
author_facet	Aguilar-Arevalo, Alexis A. Avalos, Nicolas Bertou, Xavier Bonifazi, Carla Cancelo, Gustavo Cervantes-Vergara, Brenda A. Chavez, Claudio Chierchie, Fernando Corrêa, Gustavo Coelho D'Olivo, Juan Carlos Anjos, João dos Estrada, Juan Moroni, Guillermo Fernandez Neto, Aldo R. Fernandes Ford, Richard Kilminster, Ben Kuk, Kevin Lathrop, Andrew Lemos, Patrick Lima Jr., Herman P. Makler, Martin Maslova, Katherine Marinho, Franciole Molina, Jorge Nasteva, Irina Oliveira, Ana Carolina Paulucci, Laura Rodrigues, Dario Sarkis, Y. Sofo-Haro, Miguel Stalder, Diego Tiffenberg, Javier Uemura, Sho Ventura, Pedro
contents	The Coherent Neutrino-Nucleus Interaction Experiment (CONNIE) aims to detect the coherent scattering (CE$ν$NS) of reactor antineutrinos off silicon nuclei using thick fully-depleted high-resistivity silicon CCDs. Two Skipper-CCD sensors with sub-electron readout noise capability were installed at the experiment next to the Angra-2 reactor in 2021, making CONNIE the first experiment to employ Skipper-CCDs for reactor neutrino detection. We report on the performance of the Skipper-CCDs, the new data processing and data quality selection techniques and the event selection for CE$ν$NS interactions, which enable CONNIE to reach a record low detection threshold of 15 eV. The data were collected over 300 days in 2021-2022 and correspond to exposures of 14.9 g-days with the reactor-on and 3.5 g-days with the reactor-off. The difference between the reactor-on and off event rates shows no excess and yields upper limits at 95% confidence level for the neutrino interaction rates comparable with previous CONNIE limits from standard CCDs and higher exposures. Searches for new neutrino interactions beyond the Standard Model were performed, yielding an improvement on the previous CONNIE limit on a simplified model with light vector mediators. A first dark matter (DM) search by diurnal modulation was performed by CONNIE and the results represent the best limits on the DM-electron scattering cross-section, obtained by a surface-level experiment. These promising results, obtained using a very small-mass sensor, illustrate the potential of Skipper-CCDs to probe rare neutrino interactions and motivate the plans to increase the detector mass in the near future.
format	Preprint
id	arxiv_https___arxiv_org_abs_2403_15976
institution	arXiv
publishDate	2024
record_format	arxiv
spellingShingle	Searches for CEνNS and Physics beyond the Standard Model using Skipper-CCDs at CONNIE Aguilar-Arevalo, Alexis A. Avalos, Nicolas Bertou, Xavier Bonifazi, Carla Cancelo, Gustavo Cervantes-Vergara, Brenda A. Chavez, Claudio Chierchie, Fernando Corrêa, Gustavo Coelho D'Olivo, Juan Carlos Anjos, João dos Estrada, Juan Moroni, Guillermo Fernandez Neto, Aldo R. Fernandes Ford, Richard Kilminster, Ben Kuk, Kevin Lathrop, Andrew Lemos, Patrick Lima Jr., Herman P. Makler, Martin Maslova, Katherine Marinho, Franciole Molina, Jorge Nasteva, Irina Oliveira, Ana Carolina Paulucci, Laura Rodrigues, Dario Sarkis, Y. Sofo-Haro, Miguel Stalder, Diego Tiffenberg, Javier Uemura, Sho Ventura, Pedro High Energy Physics - Experiment Instrumentation and Detectors The Coherent Neutrino-Nucleus Interaction Experiment (CONNIE) aims to detect the coherent scattering (CE$ν$NS) of reactor antineutrinos off silicon nuclei using thick fully-depleted high-resistivity silicon CCDs. Two Skipper-CCD sensors with sub-electron readout noise capability were installed at the experiment next to the Angra-2 reactor in 2021, making CONNIE the first experiment to employ Skipper-CCDs for reactor neutrino detection. We report on the performance of the Skipper-CCDs, the new data processing and data quality selection techniques and the event selection for CE$ν$NS interactions, which enable CONNIE to reach a record low detection threshold of 15 eV. The data were collected over 300 days in 2021-2022 and correspond to exposures of 14.9 g-days with the reactor-on and 3.5 g-days with the reactor-off. The difference between the reactor-on and off event rates shows no excess and yields upper limits at 95% confidence level for the neutrino interaction rates comparable with previous CONNIE limits from standard CCDs and higher exposures. Searches for new neutrino interactions beyond the Standard Model were performed, yielding an improvement on the previous CONNIE limit on a simplified model with light vector mediators. A first dark matter (DM) search by diurnal modulation was performed by CONNIE and the results represent the best limits on the DM-electron scattering cross-section, obtained by a surface-level experiment. These promising results, obtained using a very small-mass sensor, illustrate the potential of Skipper-CCDs to probe rare neutrino interactions and motivate the plans to increase the detector mass in the near future.
title	Searches for CEνNS and Physics beyond the Standard Model using Skipper-CCDs at CONNIE
topic	High Energy Physics - Experiment Instrumentation and Detectors
url	https://arxiv.org/abs/2403.15976

if (filemtime($filename) + $maxlifetime < time()) { unlink($filename); $count++; } } return $count; } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ protected function saveSession($sessId, $data): bool { $sessFile = $this->path . '/sess_' . $sessId; if ($handle = fopen($sessFile, 'w')) { $return = false; // Lock the file for exclusive access to avoid issues with multiple // processes writing session simultaneously: if (flock($handle, LOCK_EX)) { $return = fwrite($handle, $data); // Make sure that there's no trailing data by truncating the file to // the correct length: ftruncate($handle, strlen($data)); fflush($handle); flock($handle, LOCK_UN); } fclose($handle); if ($return !== false) { return true; } } // If we got this far, something went wrong with the file output... // It is tempting to throw an exception here, but this code is called // outside of the context of exception handling, so all we can do is // echo a message.

// Anecdotal testing Today and Yesterday seems to indicate destroy() // is called by the garbage collector and everything is good. // Something to keep in mind though. return 0; } /** * Write function that is called when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ public function write($sessId, $data): bool { if ($this->writesDisabled) { return true; } return $this->saveSession($sessId, $data); } /** * A function that is called internally when session data is to be saved. * * @param string $sessId The current session ID * @param string $data The session data to write * * @return bool */ abstract protected function saveSession($sessId, $data): bool; }

* * @return void */ public function writeClose() { // The assumption is that we're using PHP's ext/session. // session_write_close() will actually overwrite $_SESSION with an // empty array on completion -- which leads to a mismatch between what // is in the storage object and $_SESSION. To get around this, we // temporarily reset $_SESSION to an array, and then re-link it to // the storage object. // // Additionally, while you _can_ write to $_SESSION following a // session_write_close() operation, no changes made to it will be // flushed to the session handler. As such, we now mark the storage // object isImmutable. $storage = $this->getStorage(); if (! $storage->isImmutable()) { $_SESSION = $storage->toArray(true); session_write_close(); $storage->fromArray($_SESSION); $storage->markImmutable(); } } /** * Attempt to set the session name * * If the session has already been started, or if the name provided fails * validation, an exception will be raised. * * @param string $name * @return SessionManager * @throws Exception\InvalidArgumentException */ public function setName($name) { if ($this->sessionExists()) { throw new Exception\InvalidArgumentException( 'Cannot set session name after a session has already started'

Environment & details:

GET Data empty

POST Data empty

Files empty

Key	Value
VUFIND_SESSION	"a89aff78c5eead80664bd6a336e0d0ef"
language	"it"
ui	"standard"

Session

Key	Value
__Laminas	array:2 [`"_REQUEST_ACCESS_TIME" => 1790987227.1004 "_VALID" => array:1 [ "Laminas\Session\Validator\Id" => "a89aff78c5eead80664bd6a336e0d0ef" ]`]
SessionState	Laminas\Stdlib\ArrayObject {#938}
FlashMessenger	Laminas\Stdlib\ArrayObject {#1428}
SessionHelper	Laminas\Stdlib\ArrayObject {#1762}

Server/Request Data

Key	Value
REDIRECT_VUFIND_LOCAL_DIR	"/usr/local/vufind/local"
REDIRECT_HTTPS	"on"
REDIRECT_SSL_TLS_SNI	"info.umar.mx"
REDIRECT_STATUS	"200"
VUFIND_LOCAL_DIR	"/usr/local/vufind/local"
HTTPS	"on"
SSL_TLS_SNI	"info.umar.mx"
HTTP_ACCEPT	"/"
HTTP_USER_AGENT	"Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)"
HTTP_COOKIE	"VUFIND_SESSION=a89aff78c5eead80664bd6a336e0d0ef; language=it; ui=standard"
HTTP_ACCEPT_ENCODING	"gzip, br, zstd, deflate"
HTTP_HOST	"info.umar.mx"
PATH	"/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/snap/bin"
SERVER_SIGNATURE	"<address>Apache/2.4.66 (Ubuntu) Server at info.umar.mx Port 443</address>\n"
SERVER_SOFTWARE	"Apache/2.4.66 (Ubuntu)"
SERVER_NAME	"info.umar.mx"
SERVER_ADDR	"200.23.222.19"
SERVER_PORT	"443"
REMOTE_ADDR	"216.73.217.142"
DOCUMENT_ROOT	"/usr/local/vufind/public"
REQUEST_SCHEME	"https"
CONTEXT_PREFIX	""
CONTEXT_DOCUMENT_ROOT	"/usr/local/vufind/public"
SERVER_ADMIN	"admin@localhost"
SCRIPT_FILENAME	"/usr/local/vufind/public/index.php"
REMOTE_PORT	"27291"
REDIRECT_URL	""" /Record/\n arxiv_https___arxiv_org_abs_2403_15976/Details """
GATEWAY_INTERFACE	"CGI/1.1"
SERVER_PROTOCOL	"HTTP/1.1"
REQUEST_METHOD	"GET"
QUERY_STRING	""
REQUEST_URI	"/Record/%0Aarxiv_https___arxiv_org_abs_2403_15976/Details"
SCRIPT_NAME	"/index.php"
PHP_SELF	"/index.php"
REQUEST_TIME_FLOAT	1790987227.0911
REQUEST_TIME	1790987227

Environment Variables empty

Registered Handlers

0. Whoops\Handler\PrettyPageHandler

Environment & details:

GET Data empty

POST Data empty

Files empty

Key	Value
VUFIND_SESSION	"a89aff78c5eead80664bd6a336e0d0ef"
language	"it"
ui	"standard"

Session

Key	Value
__Laminas	array:2 [`"_REQUEST_ACCESS_TIME" => 1790987227.1004 "_VALID" => array:1 [ "Laminas\Session\Validator\Id" => "a89aff78c5eead80664bd6a336e0d0ef" ]`]
SessionState	Laminas\Stdlib\ArrayObject {#938}
FlashMessenger	Laminas\Stdlib\ArrayObject {#1428}
SessionHelper	Laminas\Stdlib\ArrayObject {#1762}

Server/Request Data

Key	Value
REDIRECT_VUFIND_LOCAL_DIR	"/usr/local/vufind/local"
REDIRECT_HTTPS	"on"
REDIRECT_SSL_TLS_SNI	"info.umar.mx"
REDIRECT_STATUS	"200"
VUFIND_LOCAL_DIR	"/usr/local/vufind/local"
HTTPS	"on"
SSL_TLS_SNI	"info.umar.mx"
HTTP_ACCEPT	"/"
HTTP_USER_AGENT	"Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)"
HTTP_COOKIE	"VUFIND_SESSION=a89aff78c5eead80664bd6a336e0d0ef; language=it; ui=standard"
HTTP_ACCEPT_ENCODING	"gzip, br, zstd, deflate"
HTTP_HOST	"info.umar.mx"
PATH	"/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/snap/bin"
SERVER_SIGNATURE	"<address>Apache/2.4.66 (Ubuntu) Server at info.umar.mx Port 443</address>\n"
SERVER_SOFTWARE	"Apache/2.4.66 (Ubuntu)"
SERVER_NAME	"info.umar.mx"
SERVER_ADDR	"200.23.222.19"
SERVER_PORT	"443"
REMOTE_ADDR	"216.73.217.142"
DOCUMENT_ROOT	"/usr/local/vufind/public"
REQUEST_SCHEME	"https"
CONTEXT_PREFIX	""
CONTEXT_DOCUMENT_ROOT	"/usr/local/vufind/public"
SERVER_ADMIN	"admin@localhost"
SCRIPT_FILENAME	"/usr/local/vufind/public/index.php"
REMOTE_PORT	"27291"
REDIRECT_URL	""" /Record/\n arxiv_https___arxiv_org_abs_2403_15976/Details """
GATEWAY_INTERFACE	"CGI/1.1"
SERVER_PROTOCOL	"HTTP/1.1"
REQUEST_METHOD	"GET"
QUERY_STRING	""
REQUEST_URI	"/Record/%0Aarxiv_https___arxiv_org_abs_2403_15976/Details"
SCRIPT_NAME	"/index.php"
PHP_SELF	"/index.php"
REQUEST_TIME_FLOAT	1790987227.0911
REQUEST_TIME	1790987227

Environment Variables empty

Registered Handlers

0. Whoops\Handler\PrettyPageHandler

Documenti analoghi

Environment & details:

Environment & details: