Hayrapetyan, A.Tumasyan, A.Adam, W.Andrejkovic, J. W.Bergauer, T.Chatterjee, S.Zhokin, A.2025-06-112025-06-1120250031-90071079-7114https://doi.org/10.1103/PhysRevLett.134.131802Stylianou, Nicolas/0000-0002-0113-6829; Hall, Geoffrey/0000-0002-6299-8385; Lasaosa Garcia, Clara/0000-0003-2726-7111; Krintiras, Georgios Konstantinos/0000-0002-0380-7577; Garcia, Francisco/0000-0002-4023-7964; Costa, Salvatore/0000-0001-9919-0569; Azzurri, Paolo/0000-0002-1717-5654; Paulini, Manfred/0000-0002-6714-5787; Colaleo, Anna/0000-0002-0711-6319; Portales, Louis/0000-0002-9860-9185; Ruiz, Jose/0000-0002-3306-0363; Rinkevicius, Aurelijus/0000-0002-7510-255X; Josa Mutuberria, Isabel/0000-0002-4985-6964; Yagil, Avi/0000-0002-6108-4004; Dozen, Candan/0000-0002-4301-634X; D'Enterria, David/0000-0002-5754-4303; Brigljevic, Vuko/0000-0001-5847-0062; Kole, Gouranga/0000-0002-3285-1497; Hamel De Monchenault, Gautier/0000-0002-3872-3592; D'Anzi, Brunella/0000-0002-9361-3142; Redondo, Ignacio/0000-0003-3737-4121; Brooke, James/0000-0003-2529-0684; Moureaux, Louis/0000-0002-2310-9266; 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Attia Mahmoud, Mohammed/0000-0001-8692-5458; Sculac, Ana/0000-0001-7938-7559; Stein, Annika/0000-0003-0713-811X; Tarricone, Cristiano/0000-0001-6233-0513; Kim, Bobae/0000-0002-9539-6815; Marzocchi, Badder/0000-0001-6687-6214; Robert, Schoefbeck/0000-0002-2332-8784; Al Kadhim, Ali/0000-0003-3490-8407; Chatterjee, Suman/0000-0003-2660-0349; Diotalevi, Tommaso/0000-0003-0780-8785; De Guio, Federico/0000-0001-5927-8865; Puerta Pelayo, Jesus/0000-0001-7390-1457; Schroder, Matthias/0000-0001-8058-9828; Manzoni, Riccardo Andrea/0000-0002-7584-5038; Mitselmakher, Guenakh/0000-0001-5745-3658; Lassila-Perini, Kati/0000-0002-5502-1795; Lu, Meng/0000-0002-6999-3931; Heredia De La Cruz, Ivan/0000-0002-8133-6467; Delaere, Christophe/0000-0001-8707-6021; Landsberg, Greg/0000-0002-4184-9380; Mrenna, Stephen/0000-0001-8731-160X; Holmes, Tova/0000-0002-3959-5174; Cardini, Andrea/0000-0003-1803-0999; Fernandez Bedoya, Cristina/0000-0001-8057-9152; Levchuk, Leonid/0000-0001-5889-7410; Csanad, Mate/0000-0002-3154-6925; 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Caminada, Lea/0000-0001-5677-6033; Bethani, Agni/0000-0002-8150-7043; Leonardo, Nuno/0000-0002-9746-4594; Trevisani, Nicolo/0000-0002-5223-9342; Cussans, David/0000-0001-8192-0826; Wilson, Jonathan/0000-0002-5672-7394; Litov, Leandar/0000-0002-8511-6883; Bortignon, Pierluigi/0000-0002-5360-1454; Li, Qiang/0000-0002-8290-0517; Ngadiuba, Jennifer/0000-0002-0055-2935; Legger, Federica/0000-0003-1400-0709; Bloom, Kenneth/0000-0002-4272-8900; Kreczko, Luke/0000-0003-2341-8330; Canelli, Florencia/0000-0001-6361-2117; Moon, Chang-Seong/0000-0001-8229-7829; Benato, Lisa/0000-0001-5135-7489; Perez Adan, Danyer/0000-0003-3416-0726; Alcaraz Maestre, Juan/0000-0003-0914-7474; Pesaresi, Mark/0000-0002-9759-1083; Mendizabal, Mikel/0000-0002-6506-5177; Blekman, Freya/0000-0002-7366-7098; /0000-0002-1153-816X; Chahal, Gurpreet Singh/0000-0003-0320-4407; Azzi, Patrizia/0000-0002-3129-828X; Dubinin, Mikhail/0000-0002-7766-7175; Mundim, Luiz/0000-0001-9964-7805; De La Cruz Burelo, Eduard/0000-0002-7469-6974; Evdokimov, Olga/0000-0002-1250-8931; Martinez Ruiz Del Arbol, Pablo/0000-0002-7737-5121; Gutsche, Oliver/0000-0002-8015-9622; Rabbertz, Klaus/0000-0001-7040-9846; Kogler, Roman/0000-0002-5336-4399; Escalante Del Valle, Alberto/0000-0002-9702-6359; Dragicevic, Marko/0000-0003-1967-6783; Gomez-Ceballos, Guillelmo/0000-0003-1683-9460; Hinzmann, Andreas/0000-0002-2633-4696; Sahasransu, Abanti Ranadhir/0000-0003-1505-1743; Vannerom, David/0000-0002-2747-5095; Sharma, Varun/0000-0003-1287-1471; /0000-0002-6047-4211; Mora Herrera, Maria Clemencia/0000-0003-3915-3170; Tornago, Marta/0000-0001-6768-1056; Sanchez-Hernandez, Alberto/0000-0001-9548-0358; Naimuddin, Md/0000-0003-4542-386X; Tytgat, Michael/0000-0002-3990-2074; Pieri, Marco/0000-0003-3303-6301; Novaes, Sergio/0000-0003-0471-8549; Murillo Quijada, Javier Alberto/0000-0003-4933-2092; Konecki, Marcin/0000-0001-9482-4841; Janssen, Tahys/0000-0002-3998-4081; Abbiendi, Giovanni/0000-0003-4499-7562; You, Zhengyun/0000-0001-8324-3291; Collard, Caroline/0000-0002-5230-8387; Goldstein, Joel/0000-0003-1591-6014; Dewanjee, Dr. Ram Krishna/0000-0001-6645-6244; Benaglia, Andrea Davide/0000-0003-1124-8450; Fernandez Perez Tomei, Thiago Rafael/0000-0002-1809-5226; Noll, Dennis Daniel Nick/0000-0002-0176-2360; Bhowmik, Sandeep/0000-0003-1260-973X; Kim, Tae Jeong/0000-0001-8336-2434; Wittich, Peter/0000-0002-7401-2181; Gershtein, Yuri/0000-0002-4871-5449; Smith, Nicholas/0000-0002-0324-3054; Navarro-Tobar, Alvaro/0000-0003-3606-1780; Sznajder, Andre/0000-0001-6998-1108; Waltenberger, Wolfgang/0000-0002-6215-7228; Kolberg, Ted/0000-0002-0211-6109; Demiroglu, Zuhal Seyma/0000-0001-7977-7127; Hajahmad (Wael Haj Ahmad), Vael/0000-0003-1491-0446; Jabeen, Shabnam/0000-0002-0155-7383; Diaz, Daniel/0000-0001-6834-1176; Lipton, Ronald/0000-0002-6665-7289; Melo Da Costa, Eliza/0000-0002-5016-6434; Vischia, Pietro/0000-0002-7088-8557; Delgado Peris, Antonio/0000-0002-8511-7958; Rebello Teles, Patricia/0000-0001-9029-8506; Trocino, Daniele/0000-0002-2830-5872; Cepeda, Maria/0000-0002-6076-4083; Steggemann, Jan/0000-0003-4420-5510; Yang, Tianyu Justin/0000-0003-4317-4660; Tishelman-Charny, Abraham/0000-0002-7332-5098; Pasztor, Gabriella/0000-0003-0707-9762; Botta, Cristina/0000-0002-8072-795X; Lethuillier, Morgan/0000-0001-6185-2045; Verdini, Piero Giorgio/0000-0002-0042-9507; Duarte, Javier Mauricio/0000-0002-5076-7096; Verdier, Patrice/0000-0003-3090-2948; Spagnolo, Paolo/0000-0001-7962-5203; Ulrich, Ralf/0000-0002-2535-402X; Pradhan, Raghunath/0000-0001-7000-6510; Giacomelli, Paolo/0000-0002-6368-7220; Matorras, Francisco/0000-0003-4295-5668; Ivanov, Andrew/0000-0002-9270-5643; Dutta, Valentina/0000-0001-5958-829X; Padula, Sandra S./0000-0003-3071-0559; Ahmad, Ashfaq/0000-0002-4770-1897; Singh, Jasbir/0000-0001-9029-2462; De Moor, Alexandre/0000-0001-5964-1935; Smith, Wesley/0000-0003-3195-0909; Everaerts, Pieter/0000-0003-3848-324X; Jin, Weijie/0009-0009-8976-7702; Shi, Zhaozhong/0000-0001-5498-8825; Grandi, Claudio/0000-0001-5998-3070; Karneyeu, Anton/0000-0001-9983-1004; Kyberd, Paul/0000-0002-7353-7090; Malik, Sudhir/0000-0002-6356-2655; Petrucciani, Giovanni/0000-0003-0889-4726; Fernandez Menendez, Javier/0000-0002-5213-3708; Meola, Sabino/0000-0002-8233-7277; Kunnawalkam Elayavalli, Raghav/0000-0002-9202-1516; Reis, Thomas/0000-0003-3703-6624; Yazgan, Efe/0000-0001-5732-7950; Taylor, Lucas/0000-0002-6584-2538; Vilela Pereira, Antonio/0000-0003-3177-4626; Tinoco Mendes, Andre David/0000-0001-5854-7699; Jafari, Abideh/0000-0001-7327-1870; Kondratyev, Dmitry/0000-0002-7874-2480; Dolek, Furkan/0000-0001-7092-5517; Golf, Frank/0000-0003-3567-9351; Tiras, Emrah/0000-0002-5628-7464; Wilson, Graham/0000-0003-0917-4763; Giammanco, Andrea/0000-0001-9640-8294; Schwandt, Joern/0000-0002-0052-597X; Forthomme, Laurent/0000-0002-3302-336X; Wardle, Nicholas/0000-0003-1344-3356; Pastrone, Nadia/0000-0001-7291-1979; Galli Mercadante, Pedro/0000-0001-8333-4302; Sharma, Ashish/0000-0002-0688-923X; Fouz Iglesias, Maria Cruz/0000-0003-2950-976X; Alverson, George/0000-0001-6651-1178; Ecklund, Karl/0000-0002-6976-4637; Kasemann, Matthias/0000-0002-0429-2448; Alves, Gilvan/0000-0002-8369-1446; Androsov, Konstantin/0000-0003-2694-6542; Ligabue, Franco/0000-0002-1549-7107A search is presented for fractionally charged particles with charges below 1e, using their small energy loss in the tracking detector as a key variable to observe a signal. The analyzed dataset corresponds to an integrated luminosity of 138 fb(-1) of proton-proton collisions collected at root s = 13 TeV in 2016-2018 at the CERN LHC. This is the first search at the LHC for new particles with a charge between e/3 and 0.9e, including an extension of previous results at a charge of 2e/3. Masses up to 640 GeV and charges as low as e/3 are excluded at 95% confidence level. These are the most stringent limits to date for the considered Drell-Yan-like production mode.eninfo:eu-repo/semantics/openAccessArticle10.1103/PhysRevLett.134.1318022-s2.0-105003767734