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Investigation of the interaction via p$-\Sigma^{0}$ femtoscopy in pp collisions

This Letter presents the first direct investigation of the p–<math altimg="si1.svg"><msup><mrow><mi mathvariant="normal">Σ</mi></mrow><mrow><mn>0</mn></mrow></msup></math> interaction, using the femtoscopy te...

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Autores principales: Acharya, Shreyasi, Adamova, Dagmar, Adler, Alexander, Adolfsson, Jonatan, Aggarwal, Madan Mohan, Aglieri Rinella, Gianluca, Agnello, Michelangelo, Agrawal, Neelima, Ahammed, Zubayer, Ahmad, Shakeel, Ahn, Sang Un, Akindinov, Alexander, Al-turany, Mohammad, Alam, Sk Noor, Silva De Albuquerque, Danilo, Aleksandrov, Dmitry, Alessandro, Bruno, Alfanda, Haidar Mas'ud, Alfaro Molina, Jose Ruben, Ali, Bushra, Ali, Yasir, Alici, Andrea, Alkin, Anton, Alme, Johan, Alt, Torsten, Altenkamper, Lucas, Altsybeev, Igor, Anaam, Mustafa, Andrei, Cristian, Andreou, Dimitra, Andrews, Harry Arthur, Andronic, Anton, Angeletti, Massimo, Anguelov, Venelin, Anson, Christopher Daniel, Anticic, Tome, Antinori, Federico, Antonioli, Pietro, Anwar, Rafay, Apadula, Nicole, Aphecetche, Laurent Bernard, Appelshaeuser, Harald, Arcelli, Silvia, Arnaldi, Roberta, Arratia Munoz, Miguel Ignacio, Arsene, Ionut Cristian, Arslandok, Mesut, Augustinus, Andre, Averbeck, Ralf Peter, Aziz, Sizar, Azmi, Mohd 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Pooja, Park, Jonghan, Parkkila, Jasper Elias, Parmar, Sonia, Pathak, Surya Prakash, Patra, Rajendra Nath, Paul, Biswarup, Pei, Hua, Peitzmann, Thomas, Peng, Xinye, Pereira, Luis Gustavo, Pereira Da Costa, Hugo Denis Antonio, Peresunko, Dmitry Yurevich, Mesa Perez, Guillermo, Perez Lezama, Edgar, Peskov, Vladimir, Pestov, Yury, Petracek, Vojtech, Petrovici, Mihai, Peretti Pezzi, Rafael, Piano, Stefano, Pikna, Miroslav, Pillot, Philippe, Pinazza, Ombretta, Pinsky, Lawrence, Pinto, Chiara, Pisano, Silvia, Pistone, Daniele, Ploskon, Mateusz Andrzej, Planinic, Mirko, Pliquett, Fabian, Pluta, Jan Marian, Pochybova, Sona, Poghosyan, Martin, Polishchuk, Boris, Poljak, Nikola, Pop, Amalia, Poppenborg, Hendrik, Porteboeuf, Sarah Julie, Pozdniakov, Valeriy, Prasad, Sidharth Kumar, Preghenella, Roberto, Prino, Francesco, Pruneau, Claude Andre, Pshenichnov, Igor, Puccio, Maximiliano, Putschke, Jorn Henning, Quishpe Quishpe, Raquel Estefania, Ragoni, Simone, Raha, Sibaji, Rajput, Sonia, Rak, Jan, Rakotozafindrabe, Andry Malala, Ramello, Luciano, Rami, Fouad, Raniwala, Rashmi, Raniwala, Sudhir, Rasanen, Sami Sakari, Rath, Rutuparna, Ratza, Viktor, Ravasenga, Ivan, Read, Kenneth Francis, Redlich, Krzysztof, Rehman, Attiq Ur, Reichelt, Patrick Simon, Reidt, Felix, Ren, Xiaowen, Renfordt, Rainer Arno Ernst, Jakubcinova, Zuzana, Revol, Jean-pierre, Reygers, Klaus Johannes, Riabov, Viktor, Richert, Tuva Ora Herenui, Richter, Matthias Rudolph, Riedler, Petra, Riegler, Werner, Riggi, Francesco, Ristea, Catalin-lucian, Rode, Sudhir Pandurang, Rodriguez Cahuantzi, Mario, Roeed, Ketil, Rogalev, Roman, Rogochaya, Elena, Rohr, David Michael, Roehrich, Dieter, Rokita, Przemyslaw Stefan, Ronchetti, Federico, Dominguez Rosas, Edgar, Roslon, Krystian, Rossi, Andrea, Rotondi, Alberto, Roy, Ankhi, Roy, Pradip Kumar, Vazquez Rueda, Omar, Rui, Rinaldo, Rumyantsev, Boris, Rustamov, Anar, Ryabinkin, Evgeny, Ryabov, Yury, Rybicki, Andrzej, Rytkonen, Heidi Maria, Saarimaki, Oskari Antti Matti, Sadhu, 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Shangaraev, Artem, Sharma, Anjali, Sharma, Ankita, Sharma, Himanshu, Sharma, Meenakshi, Sharma, Natasha, Sheikh, Ashik Ikbal, Shigaki, Kenta, Hachiya Shimomura, Maya, Shirinkin, Sergey, Shou, Qiye, Sibiryak, Yury, Siddhanta, Sabyasachi, Siemiarczuk, Teodor, Silvermyr, David Olle Rickard, Simatovic, Goran, Simonetti, Giuseppe, Singh, Ranbir, Singh, Randhir, Singh, Ravindra, Singh, Vivek Kumar, Singhal, Vikas, Sarkar - Sinha, Tinku, Sitar, Branislav, Sitta, Mario, Skaali, Bernhard, Slupecki, Maciej, Smirnov, Nikolai, Snellings, Raimond, Snellman, Tomas Wilhelm, Soncco Meza, Carlos, Song, Jihye, Songmoolnak, Arnon, Soramel, Francesca, Sorensen, Soren Pontoppidan, Sputowska, Iwona Anna, Stachel, Johanna, Stan, Ionel, Stankus, Paul William, Steffanic, Patrick John, Stenlund, Evert Anders, Stocco, Diego, Storetvedt, Maksim Melnik, Dello Stritto, Luigi, Alarcon Do Passo Suaide, Alexandre, Sugitate, Toru, Suire, Christophe Pierre, Suleymanov, Mais Kazim Oglu, Suljic, Miljenko, Sultanov, 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Doremalen, Lennart, Van Leeuwen, Marco, Vande Vyvre, Pierre, Varga, Dezso, Varga, Zoltan, Varga-kofarago, Monika, Diozcora Vargas Trevino, Aurora, Vasileiou, Maria, Vasiliev, Andrey, Vazquez Doce, Oton, Vechernin, Vladimir, Veen, Annelies Marianne, Vercellin, Ermanno, Vergara Limon, Sergio, Vermunt, Lucas Anne, Vernet, Renaud, Vertesi, Robert, Vickovic, Linda, Vilakazi, Zabulon, Villalobos Baillie, Orlando, Villatoro Tello, Abraham, Vino, Gioacchino, Vinogradov, Alexander, Virgili, Tiziano, Vislavicius, Vytautas, Vodopyanov, Alexander, Volkel, Benedikt, Volkl, Martin Andreas, Voloshin, Kirill, Voloshin, Sergey, Volpe, Giacomo, Von Haller, Barthelemy, Vorobyev, Ivan, Voscek, Dominik, Vrlakova, Janka, Wagner, Boris, Weber, Michael, Weber, Steffen Georg, Wegrzynek, Adam Tadeusz, Weiser, Dennis Franz, Wenzel, Sandro Christian, Wessels, Johannes Peter, Wiechula, Jens, Wikne, Jon, Wilk, Grzegorz Andrzej, Wilkinson, Jeremy John, Willems, Guido Alexander, Willsher, Emily Jade, Windelband, Bernd Stefan, Winn, Michael Andreas, Witt, William Edward, Wu, Yitao, Xu, Ran, Yalcin Kuzu, Serpil, Yamakawa, Kosei, Yang, Shiming, Yano, Satoshi, Yin, Zhongbao, Yokoyama, Hiroki, Yoo, In Kwon, Yoon, Jin Hee, Yuan, Shiming, Yuncu, Alperen, Yurchenko, Volodymyr, Zaccolo, Valentina, Zaman, Ali, Zampolli, Chiara, Correia Zanoli, Henrique Jose, Zardoshti, Nima, Zarochentsev, Andrey, Zavada, Petr, Zavyalov, Nikolay, Zbroszczyk, Hanna Paulina, Zhalov, Mikhail, Zhang, Song, Zhang, Xiaoming, Zhang, Zuman, Zherebchevskii, Vladimir, Zhou, Daicui, Zhou, You, Zhou, Zhuo, Zhu, Jianhui, Zhu, Ya, Zichichi, Antonino, Zimmermann, Markus Bernhard, Zinovjev, Gennady, Zurlo, Nicola
Lenguaje:eng
Publicado: 2019
Materias:
Acceso en línea:https://dx.doi.org/10.1016/j.physletb.2020.135419
http://cds.cern.ch/record/2694295
Descripción
Sumario:This Letter presents the first direct investigation of the p–<math altimg="si1.svg"><msup><mrow><mi mathvariant="normal">Σ</mi></mrow><mrow><mn>0</mn></mrow></msup></math> interaction, using the femtoscopy technique in high-multiplicity pp collisions at <math altimg="si2.svg"><msqrt><mrow><mi>s</mi></mrow></msqrt><mo linebreak="goodbreak" linebreakstyle="after">=</mo><mn>13</mn></math> TeV measured by the ALICE detector. The <math altimg="si1.svg"><msup><mrow><mi mathvariant="normal">Σ</mi></mrow><mrow><mn>0</mn></mrow></msup></math> is reconstructed via the decay channel to Λγ, and the subsequent decay of Λ to p<math altimg="si4.svg"><msup><mrow><mi>π</mi></mrow><mrow><mo linebreak="badbreak" linebreakstyle="after">−</mo></mrow></msup></math>. The photon is detected via the conversion in material to <math altimg="si5.svg"><msup><mrow><mi mathvariant="normal">e</mi></mrow><mrow><mo linebreak="badbreak" linebreakstyle="after">+</mo></mrow></msup><msup><mrow><mi mathvariant="normal">e</mi></mrow><mrow><mo linebreak="badbreak" linebreakstyle="after">−</mo></mrow></msup></math> pairs exploiting the capability of the ALICE detector to measure electrons at low transverse momenta. The measured p–<math altimg="si1.svg"><msup><mrow><mi mathvariant="normal">Σ</mi></mrow><mrow><mn>0</mn></mrow></msup></math> correlation indicates a shallow strong interaction. The comparison of the data to several theoretical predictions obtained employing the Correlation Analysis Tool using the Schrödinger Equation (CATS) and the Lednický–Lyuboshits approach shows that the current experimental precision does not yet allow to discriminate between different models, as it is the case for the available scattering and hypernuclei data. Nevertheless, the p–<math altimg="si1.svg"><msup><mrow><mi mathvariant="normal">Σ</mi></mrow><mrow><mn>0</mn></mrow></msup></math> correlation function is found to be sensitive to the strong interaction, and driven by the interplay of the different spin and isospin channels. This pioneering study demonstrates the feasibility of a femtoscopic measurement in the p–<math altimg="si1.svg"><msup><mrow><mi mathvariant="normal">Σ</mi></mrow><mrow><mn>0</mn></mrow></msup></math> channel and with the expected larger data samples in LHC Run 3 and Run 4, the p–<math altimg="si1.svg"><msup><mrow><mi mathvariant="normal">Σ</mi></mrow><mrow><mn>0</mn></mrow></msup></math> interaction will be constrained with high precision.